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Document and Entity Information - USD ($)	3 Months Ended
Document and Entity Information - USD ($)	Mar. 31, 2011	Apr. 28, 2011	Jun. 30, 2010
Document and Entity Information [Abstract]
Entity Registrant Name	AMETEK INC/
Entity Central Index Key	0001037868
Document Type	10-Q
Document Period End Date	Mar. 31, 2011
Amendment Flag	false
Document Fiscal Year Focus	2011
Document Fiscal Period Focus	Q1
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Filer Category	Large Accelerated Filer
Entity Public Float			$ 4,300,000,000
Entity Common Stock, Shares Outstanding		160,818,317

Consolidated Statement of Income (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2011	Mar. 31, 2010
Consolidated Statement of Income [Abstract]
Net sales	$ 717,783	$ 556,662
Operating expenses:
Cost of sales, excluding depreciation	472,804	375,724
Selling, general and administrative	81,492	67,543
Depreciation	11,467	10,949
Total operating expenses	565,763	454,216
Operating income	152,020	102,446
Other expenses:
Interest expense	(17,150)	(16,754)
Other, net	(1,485)	(515)
Income before income taxes	133,385	85,177
Provision for income taxes	42,950	27,232
Net income	$ 90,435	$ 57,945
Basic earnings per share	$ 0.57	$ 0.36
Diluted earnings per share	$ 0.56	$ 0.36
Weighted average common shares outstanding:
Basic shares	159,728	159,928
Diluted shares	162,186	161,355
Dividends declared and paid per share	$ 0.06	$ 0.04

Consolidated Balance Sheet - USD ($)
$ in Thousands

Mar. 31, 2011

^[1]

Dec. 31, 2010

Current assets:

Cash and cash equivalents

$ 155,009

$ 163,208

Marketable securities

6,665

5,645

Receivables, less allowance for possible losses

434,517

399,913

Inventories

351,424

335,253

Deferred income taxes

32,868

27,106

Other current assets

42,343

43,367

Total current assets

1,022,826

974,492

Property, plant and equipment, net

317,635

318,126

Goodwill

1,591,779

1,573,645

Other intangibles, net of accumulated amortization

760,966

761,556

Investments and other assets

200,092

191,096

Total assets

3,893,298

3,818,915

Current liabilities:

Short-term borrowings and current portion of long-term debt

2,652

97,152

Accounts payable

261,579

236,600

Income taxes payable

61,340

39,026

Accrued liabilities

165,452

178,081

Total current liabilities

491,023

550,859

Long-term debt

1,080,696

1,071,360

Deferred income taxes

320,326

311,466

Other long-term liabilities

119,034

110,026

Total liabilities

2,011,079

2,043,711

Stockholders' equity:

Common stock

1,682

1,681

Capital in excess of par value

271,221

263,290

Retained earnings

1,836,529

1,755,742

Accumulated other comprehensive loss

(73,661)

(91,958)

Treasury stock

(153,552)

(153,551)

Total stockholders' equity

1,882,219

1,775,204

Total liabilities and stockholders' equity

$ 3,893,298

$ 3,818,915

[1]

Unaudited

Condensed Consolidated Statement of Cash Flows (Unaudited) - USD ($)
$ in Thousands

3 Months Ended

Mar. 31, 2011

Mar. 31, 2010

Operating activities:

Net income

$ 90,435

$ 57,945

Adjustments to reconcile net income to total operating activities:

Depreciation and amortization

19,854

16,787

Deferred income tax expense

2,869

3,862

Share-based compensation expense

4,332

3,601

Net change in assets and liabilities, net of acquisitions

(13,240)

10,053

Pension contribution and other

(610)

(385)

Total operating activities

103,640

91,863

Investing activities:

Additions to property, plant and equipment

(10,371)

(5,811)

Purchases of businesses, net of cash acquired and other

(3,166)

(3,225)

Total investing activities

(13,537)

(9,036)

Financing activities:

Net change in short-term borrowings

(94,499)

(797)

Reduction in long-term borrowings

(627)

Repurchases of common stock

(67,345)

Cash dividends paid

(9,559)

(6,348)

Excess tax benefits from share-based payments

970

1,584

Proceeds from employee stock plans

2,316

2,486

Total financing activities

(101,399)

(70,420)

Effect of exchange rate changes on cash and cash equivalents

3,097

(3,131)

(Decrease) increase in cash and cash equivalents

(8,199)

9,276

Cash and cash equivalents:

As of January 1

163,208

246,356

As of March 31

$ 155,009

^[1]

$ 255,632

[1]

Unaudited

Basis of Presentation	3 Months Ended
Basis of Presentation	Mar. 31, 2011
Basis of Presentation [Abstract]
Basis of Presentation	1. Basis of Presentation The accompanying consolidated financial statements are unaudited. AMETEK, Inc. (the “Company”) believes that all adjustments (which primarily consist of normal recurring accruals) necessary for a fair presentation of the consolidated financial position of the Company at March 31, 2011, the consolidated results of its operations and its cash flows for the three months ended March 31, 2011 and 2010 have been included. Quarterly results of operations are not necessarily indicative of results for the full year. The accompanying financial statements should be read in conjunction with the financial statements and related notes presented in the Company’s Annual Report on Form 10-K for the year ended December 31, 2010 as filed with the Securities and Exchange Commission.

Recent Accounting Pronouncements	3 Months Ended
Recent Accounting Pronouncements	Mar. 31, 2011
Recent Accounting Pronouncements [Abstract]
Recent Accounting Pronouncements	2. Recent Accounting Pronouncements In January 2010, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) No. 2010-06, Fair Value Measurements and Disclosures (“ASU 2010-06”). ASU 2010-06 provides amendments that clarify existing disclosures and require new disclosures related to fair value measurements, providing greater disaggregated information on each class of assets and liabilities and more robust disclosures on transfers between levels 1 and 2, and activity in level 3 fair value measurements. The Company adopted the applicable provisions within ASU 2010-06 effective January 1, 2010. The Company adopted the level 3 disclosure requirements of ASU 2010-06 that are effective for fiscal years beginning after December 15, 2010 and for interim periods within those fiscal years as of January 1, 2011. See Note 5. The adoption of ASU 2010-06 did not have a significant impact on the Company’s fair value disclosures. In April 2010, the FASB issued ASU No. 2010-17, Revenue Recognition — Milestone Method (“ASU 2010-17”). ASU 2010-17 establishes criteria for a milestone to be considered substantive and allows revenue recognition when the milestone is achieved in research or development arrangements. In addition, it requires disclosure of certain information with respect to arrangements that contain milestones. ASU 2010-17 was effective on January 1, 2011 for the Company and the adoption did not have a significant impact on the Company’s consolidated results of operations, financial position or cash flows. In December 2010, the FASB issued ASU No. 2010-29, Business Combinations (“ASU 2010-29”). ASU 2010-29 addresses diversity in practice about the interpretation of the pro forma disclosure requirement for business combinations. ASU 2010-29 requires disclosure of pro forma revenue and earnings for the current reporting period as though the acquisition date for all business combinations that occurred during the year had been as of the beginning of the annual reporting period for both the current and any comparable periods reported. The Company adopted the disclosure requirements of ASU 2010-29 effective January 1, 2011.

Earnings Per Share

3 Months Ended

Mar. 31, 2011

Earnings Per Share [Abstract]

Earnings Per Share

3. Earnings Per Share

The calculation of basic earnings per share is based on the weighted average number of common shares considered outstanding during the periods. The calculation of diluted earnings per share reflects the effect of all potentially dilutive securities (principally outstanding common stock options and restricted stock grants). The number of weighted average shares used in the calculation of basic earnings per share and diluted earnings per share was as follows:


	Three Months Ended
	March 31,
	2011		2010
	(In thousands)
Weighted average shares:
Basic shares		159,728		159,928
Stock option and award plans		2,458		1,427

Diluted shares		162,186		161,355

Comprehensive Income

3 Months Ended

Mar. 31, 2011

Comprehensive Income [Abstract]

Comprehensive Income

4. Comprehensive Income

Comprehensive income includes all changes in stockholders’ equity during a period except those resulting from investments by and distributions to stockholders. The components of comprehensive income were as follows:


	Three Months Ended
	March 31,
	2011		2010
	(In thousands)
Net income	$	90,435	$	57,945
Foreign currency translation adjustment		14,496		(29,107	)
Foreign currency net investment hedge*		3,695		(4,393	)
Other		106		233

Total comprehensive income	$	108,732	$	24,678


*		Represents the net gains and losses on the Company’s investment in certain foreign operations in excess of the net gains and losses from the non-derivative foreign-currency-denominated long-term debt. These debt instruments were designated as hedging instruments to offset foreign exchange gains or losses on the net investment in certain foreign operations.

Fair Value Measurements	3 Months Ended
Fair Value Measurements	Mar. 31, 2011
Fair Value Measurements [Abstract]
Fair Value Measurements	5. Fair Value Measurements The Company utilizes a valuation hierarchy for disclosure of the inputs to the valuations used to measure fair value. This hierarchy prioritizes the inputs into three broad levels as follows. Level 1 inputs are quoted prices (unadjusted) in active markets for identical assets or liabilities. Level 2 inputs are quoted prices for similar assets and liabilities in active markets or inputs that are observable for the asset or liability, either directly or indirectly through market corroboration, for substantially the full term of the financial instrument. Level 3 inputs are unobservable inputs based on the Company’s own assumptions used to measure assets and liabilities at fair value. A financial asset or liability’s classification within the hierarchy is determined based on the lowest level input that is significant to the fair value measurement. At March 31, 2011, $1.8 million of the Company’s marketable securities are valued as level 1 investments. In addition, the Company held $4.9 million of marketable securities in an institutional diversified equity securities mutual fund. These securities are valued as level 2 investments. The marketable securities are shown as a separate line on the consolidated balance sheet. For the three months ended March 31, 2011, gains and losses on the investments noted above were not significant. No transfers between level 1 and level 2 investments occurred during the three months ended March 31, 2011. Fair value of the institutional equity securities mutual fund was estimated using the net asset value of the Company’s ownership interests in the fund’s capital. The mutual fund seeks to provide long-term growth of capital by investing primarily in equity securities traded on U.S. exchanges and issued by large, established companies across many business sectors. Fair value of the fixed-income securities was estimated using observable market inputs and the securities are primarily corporate debt instruments and U.S. Government securities. There are no restrictions on the Company’s ability to redeem these equity and fixed-income securities investments.

Hedging Activities	3 Months Ended
Hedging Activities	Mar. 31, 2011
Hedging Activities [Abstract]
Hedging Activities	6. Hedging Activities The Company has designated certain foreign-currency-denominated long-term borrowings as hedges of the net investment in certain foreign operations. These net investment hedges are the Company’s British-pound-denominated long-term debt and Euro-denominated long-term debt, pertaining to certain European acquisitions whose functional currencies are either the British pound or the Euro. These acquisitions were financed by foreign-currency-denominated borrowings under the Company’s revolving credit facility and subsequently refinanced with long-term private placement debt. These borrowings were designed to create net investment hedges in each of the foreign subsidiaries on their respective dates of acquisition. On the respective dates of acquisition, the Company designated the British pound- and Euro-denominated loans referred to above as hedging instruments to offset foreign exchange gains or losses on the net investment in the acquired business due to changes in the British pound and Euro exchange rates. These net investment hedges were evidenced by management’s documentation supporting the contemporaneous hedge designation on the acquisition dates. Any gain or loss on the hedging instrument (the debt) following hedge designation, is reported in accumulated other comprehensive income in the same manner as the translation adjustment on the investment based on changes in the spot rate, which is used to measure hedge effectiveness. At March 31, 2011, the Company had $192.5 million of British-pound-denominated loans, which are designated as a hedge against the net investment in foreign subsidiaries acquired in 2008, 2006, 2004 and 2003. At March 31, 2011, the Company had $70.9 million of Euro-denominated loans, which were designated as a hedge against the net investment in a foreign subsidiary acquired in 2005. As a result of these British-pound- and Euro-denominated loans being designated and effective as net investment hedges, $9.3 million of currency remeasurement losses have been included in the foreign currency translation component of other comprehensive income at March 31, 2011.

Inventories

3 Months Ended

Mar. 31, 2011

Inventories [Abstract]

Inventories

7. Inventories


	March 31,		December 31,
	2011		2010
	(In thousands)
Finished goods and parts	$	53,229	$	46,953
Work in process		73,388		73,556
Raw materials and purchased parts		224,807		214,744

Total inventories	$	351,424	$	335,253

Goodwill

3 Months Ended

Mar. 31, 2011

Goodwill [Abstract]

Goodwill

8. Goodwill

The changes in the carrying amounts of goodwill by segment were as follows:

EIG

EMG

Total

(In millions)

Balance at December 31, 2010

864.4

709.2

1,573.6

Purchase price allocation adjustments and other

2.9

(0.6

)

2.3

Foreign currency translation adjustments

11.7

4.2

15.9

Balance at March 31, 2011

879.0

712.8

1,591.8

Income Taxes

3 Months Ended

Mar. 31, 2011

Income Taxes [Abstract]

Income Taxes

9. Income Taxes

At March 31, 2011, the Company had gross unrecognized tax benefits of $25.8 million, of which $21.2 million, if recognized, would impact the effective tax rate.

The following is a reconciliation of the liability for uncertain tax positions (in millions):


Balance at December 31, 2010	$	22.8
Additions for tax positions		4.1
Reductions for tax positions		(1.1	)

Balance at March 31, 2011	$	25.8

The Company recognizes interest and penalties accrued related to uncertain tax positions in income tax expense. The amounts recognized in income tax expense for interest and penalties during the three months ended March 31, 2011 and 2010 were not significant.

Financial Instruments

3 Months Ended

Mar. 31, 2011

Financial Instruments [Abstract]

Financial Instruments

10. Financial Instruments

The estimated fair values of the Company’s financial instruments are compared below to the recorded amounts at March 31, 2011 and December 31, 2010. Cash, cash equivalents and marketable securities are recorded at fair value at March 31, 2011 and December 31, 2010 in the accompanying consolidated balance sheet.


	Asset (Liability)
	March 31, 2011						December 31, 2010
	Recorded						Recorded
	Amount			Fair Value			Amount			Fair Value
	(In thousands)
Short-term borrowings	$	—		$	—		$	(95,904	)	$	(95,904	)
Long-term debt (including current portion)		(1,083,348	)		(1,174,654	)		(1,072,608	)		(1,176,399	)

The fair value of short-term borrowings approximates the carrying value. The Company’s long-term debt is all privately held with no public market for this debt, therefore, the fair value of long-term debt was computed based on comparable current market data for similar debt instruments.

Share-Based Compensation

3 Months Ended

Mar. 31, 2011

Share-Based Compensation [Abstract]

Share-Based Compensation

11. Share-Based Compensation

Total share-based compensation expense was as follows:


	Three Months Ended
	March 31,
	2011			2010
	(In thousands)
Stock option expense	$	1,831		$	1,638
Restricted stock expense		2,501			1,963

Total pre-tax expense		4,332			3,601
Related tax benefit		(1,389	)		(1,007	)

Reduction of net income	$	2,943		$	2,594

Pre-tax share-based compensation expense is included in either cost of sales, or selling, general and administrative expenses, depending on where the recipient’s cash compensation is reported.

Subsequent Event

Restricted stock awards are subject to accelerated vesting due to certain events, including doubling of the grant price of the Company’s common stock as of the close of business during any five consecutive trading days. On April 6, 2011, 509,709 shares of restricted stock, which were granted on April 23, 2009, vested under this accelerated vesting provision. The pre-tax charge to income due to the accelerated vesting of these shares was $5.2 million ($3.6 million net after-tax charge) for the three months ending June 30, 2011.

Retirement and Pension Plans

3 Months Ended

Mar. 31, 2011

Retirement and Pension Plans [Abstract]

Retirement and Pension Plans

12. Retirement and Pension Plans

The components of net periodic pension benefit expense were as follows:


	Three Months Ended
	March 31,
	2011			2010
	(In thousands)
Defined benefit plans:
Service cost	$	1,088		$	1,186
Interest cost		7,067			6,897
Expected return on plan assets		(11,266	)		(10,219	)
Amortization of net actuarial loss and other		1,138			1,993

Pension income		(1,973	)		(143	)


Other plans:
Defined contribution plans		4,070			3,056
Foreign plans and other		1,173			1,057

Total other plans		5,243			4,113


Total net pension expense	$	3,270		$	3,970

For the three months ended March 31, 2011 and 2010, contributions to our defined benefit pension plans were not significant.

Product Warranties

3 Months Ended

Mar. 31, 2011

Product Warranties [Abstract]

Product Warranties

13. Product Warranties

The Company provides limited warranties in connection with the sale of its products. The warranty periods for products sold vary widely among the Company’s operations, but for the most part do not exceed one year. The Company calculates its warranty expense provision based on past warranty experience and adjustments are made periodically to reflect actual warranty expenses.

Changes in the accrued product warranty obligation were as follows:


	Three Months Ended
	March 31,
	2011			2010
	(In thousands)
Balance at the beginning of the period	$	18,347		$	16,035
Accruals for warranties issued during the period		3,569			2,723
Settlements made during the period		(2,748	)		(2,732	)
Warranty accruals related to new businesses and other		278			(350	)

Balance at the end of the period	$	19,446		$	15,676

Certain settlements of warranties made during the period were for specific nonrecurring warranty obligations. Product warranty obligations are reported as current liabilities in the consolidated balance sheet.

Contingencies	3 Months Ended
Contingencies	Mar. 31, 2011
Contingencies [Abstract]
Contingencies	14. Contingencies Asbestos Litigation The Company (including its subsidiaries) has been named as a defendant, along with many other companies, in a number of asbestos-related lawsuits. Many of these lawsuits either relate to businesses which were acquired by the Company and do not involve products which were manufactured or sold by the Company or relate to previously owned businesses of the Company which are under new ownership. In connection with many of these lawsuits, the sellers or new owners of such businesses, as the case may be, have agreed to indemnify the Company against these claims (the “Indemnified Claims”). The Indemnified Claims have been tendered to, and are being defended by, such sellers and new owners. These sellers and new owners have met their obligations, in all respects, and the Company does not have any reason to believe such parties would fail to fulfill their obligations in the future; however, one of these companies filed for bankruptcy liquidation in 2007. To date, no judgments have been rendered against the Company as a result of any asbestos-related lawsuit. The Company believes it has strong defenses to the claims being asserted and intends to continue to vigorously defend itself in these matters. Environmental Matters Certain historic processes in the manufacture of products have resulted in environmentally hazardous waste by-products as defined by federal and state laws and regulations. At March 31, 2011, the Company is named a Potentially Responsible Party (“PRP”) at 16 non-AMETEK-owned former waste disposal or treatment sites (the “non-owned” sites). The Company is identified as a “de minimis” party in 14 of these sites based on the low volume of waste attributed to the Company relative to the amounts attributed to other named PRPs. In ten of these sites, the Company has reached a tentative agreement on the cost of the de minimis settlement to satisfy its obligation and is awaiting executed agreements. The tentatively agreed-to settlement amounts are fully reserved. In the other four sites, the Company is continuing to investigate the accuracy of the alleged volume attributed to the Company as estimated by the parties primarily responsible for remedial activity at the sites to establish an appropriate settlement amount. In the two remaining sites where the Company is a non-de minimis PRP, the Company is participating in the investigation and/or related required remediation as part of a PRP Group and reserves have been established sufficient to satisfy the Company’s expected obligations. The Company historically has resolved these issues within established reserve levels and reasonably expects this result will continue. In addition to these non-owned sites, the Company has an ongoing practice of providing reserves for probable remediation activities at certain of its current or previously owned manufacturing locations (the “owned” sites). For claims and proceedings against the Company with respect to other environmental matters, reserves are established once the Company has determined that a loss is probable and estimable. This estimate is refined as the Company moves through the various stages of investigation, risk assessment, feasibility study and corrective action processes. In certain instances, the Company has developed a range of estimates for such costs and has recorded a liability based on the low end of the range. It is reasonably possible that the actual cost of remediation of the individual sites could vary from the current estimates and the amounts accrued in the consolidated financial statements; however, the amounts of such variances are not expected to result in a material change to the consolidated financial statements. In estimating the Company’s liability for remediation, the Company also considers the likely proportionate share of the anticipated remediation expense and the ability of the other PRPs to fulfill their obligations. Total environmental reserves at March 31, 2011 and December 31, 2010 were $31.2 million and $31.3 million, respectively, for both non-owned and owned sites. For the three months ended March 31, 2011, the Company recorded $1.0 million in additional reserves. Additionally, the Company spent $1.1 million on environmental matters for the three months ended March 31, 2011. The Company’s reserves for environmental liabilities at March 31, 2011 and December 31, 2010 include reserves of $19.5 million and $18.9 million, respectively, for an owned site acquired in connection with the 2005 acquisition of HCC Industries (“HCC”). The Company is the designated performing party for the performance of remedial activities for one of several operating units making up a large Superfund site in the San Gabriel Valley of California. The Company has obtained indemnifications and other financial assurances from the former owners of HCC related to the costs of the required remedial activities. At March 31, 2011, the Company had $14.8 million in receivables related to HCC for probable recoveries from third-party escrow funds and other committed third-party funds to support the required remediation. Also, the Company is indemnified by HCC’s former owners for approximately $19.0 million of additional costs. The Company has agreements with other former owners of certain of its acquired businesses, as well as new owners of previously owned businesses. Under certain of the agreements, the former or new owners retained, or assumed and agreed to indemnify the Company against, certain environmental and other liabilities under certain circumstances. The Company and some of these other parties also carry insurance coverage for some environmental matters. To date, these parties have met their obligations in all material respects; however, one of these companies filed for bankruptcy liquidation in 2007 and, as a result, the Company is performing investigation and remediation of a formerly owned site under a Stipulation and Settlement Agreement. The Company believes it has established reserves which are sufficient to perform all known responsibilities under existing claims and consent orders. The Company has no reason to believe that other third parties would fail to perform their obligations in the future. In the opinion of management, based upon presently available information and past experience related to such matters, an adequate provision for probable costs has been made and the ultimate cost resulting from these actions is not expected to materially affect the consolidated results of operations, financial position or cash flows of the Company.

Reportable Segments	3 Months Ended
Reportable Segments	Mar. 31, 2011
Reportable Segments [Abstract]
Reportable Segments	15. Reportable Segments The Company has two reportable segments, Electronic Instruments Group (“EIG”) and Electromechanical Group (“EMG”). The Company manages, evaluates and aggregates its operating segments for segment reporting purposes primarily on the basis of product type, production processes, distribution methods and management organizations. At March 31, 2011, there were no significant changes in identifiable assets of reportable segments from the amounts disclosed at December 31, 2010, nor were there any significant changes in the basis of segmentation or in the measurement of segment operating results. Operating information relating to the Company’s reportable segments for the three months ended March 31, 2011 and 2010 can be found in the table included in Part I, Item 2. “Management’s Discussion and Analysis of Financial Condition and Results of Operations” of this Quarterly Report on Form 10-Q.

Fourth Quarter of 2008 Restructuring Charges and Asset Write-Downs

3 Months Ended

Mar. 31, 2011

Fourth Quarter of 2008 Restructuring Charges and Asset Write-Downs [Abstract]

Fourth Quarter of 2008 Restructuring Charges and Asset Write-Downs

16. Fourth Quarter of 2008 Restructuring Charges and Asset Write-Downs

During the fourth quarter of 2008, the Company recorded pre-tax charges totaling $40.0 million, which had the effect of reducing net income by $27.3 million ($0.17 per diluted share). These charges included restructuring costs for employee reductions and facility closures ($32.6 million), as well as asset write-downs ($7.4 million). The charges included $30.1 million for severance costs for more than 10% of the Company’s workforce and $1.5 million for lease termination costs associated with the closure of certain facilities. Of the $40.0 million in charges, $32.9 million of the restructuring charges and asset write-downs were recorded in cost of sales and $7.1 million of the restructuring charges and asset write-downs were recorded in Selling, general and administrative expenses. The restructuring charges and asset write-downs were reported in 2008 segment operating income as follows: $20.4 million in EIG, $19.4 million in EMG and $0.2 million in Corporate administrative and other expenses. The restructuring costs for employee reductions and facility closures relate to plans established by the Company in 2008 as part of cost reduction initiatives that were broadly implemented across the Company’s various businesses during fiscal 2009. The restructuring costs resulted from the consolidation of manufacturing facilities, the migration of production to low-cost locales and a general reduction in workforce in response to lower levels of expected sales volumes in certain of the Company’s businesses.

The following table provides a rollforward of the remaining accruals established in the fourth quarter of 2008 for restructuring charges and asset write-downs:

Restructuring

Facility

Severance

Closures

Total

(In millions)

Restructuring accruals at December 31, 2010

6.6

0.3

6.9

Utilization

(0.9

)

(0.1

)

(1.0

)

Foreign currency translation and other

0.2

0.1

0.3

Restructuring accruals at March 31, 2011

5.9

0.3

6.2

Subsequent Event	3 Months Ended
Subsequent Event	Mar. 31, 2011
Subsequent Event [Abstract]
Subsequent Event	17. Subsequent Event In April 2011, the Company acquired Avicenna Technology, Inc. (“Avicenna”), a privately held supplier of custom, fine-featured components used in the medical device industry with estimated annual sales of approximately $25 million. Avicenna provides the Company with additional expertise in producing fine-featured catheter and other medical components for leads, guide wires and custom medical assemblies. Avicenna complements the Company’s medical device market businesses and is an excellent fit with its Technical Services for Electronics business, which was acquired in 2010. The combination of these two businesses positions AMETEK as the only medical interconnects provider with integrated capabilities for the catheter, cardiac and neurostimulation markets. Avicenna will join AMETEK’s Electromechanical Group.

Recent Accounting Pronouncements (Policies)	3 Months Ended
Recent Accounting Pronouncements (Policies)	Mar. 31, 2011
Recent Accounting Pronouncements (Policies) [Abstract]
Fair Value Measurements and Disclosures	In January 2010, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) No. 2010-06, Fair Value Measurements and Disclosures (“ASU 2010-06”). ASU 2010-06 provides amendments that clarify existing disclosures and require new disclosures related to fair value measurements, providing greater disaggregated information on each class of assets and liabilities and more robust disclosures on transfers between levels 1 and 2, and activity in level 3 fair value measurements. The Company adopted the applicable provisions within ASU 2010-06 effective January 1, 2010. The Company adopted the level 3 disclosure requirements of ASU 2010-06 that are effective for fiscal years beginning after December 15, 2010 and for interim periods within those fiscal years as of January 1, 2011. See Note 5. The adoption of ASU 2010-06 did not have a significant impact on the Company’s fair value disclosures.
Revenue Recognition	In April 2010, the FASB issued ASU No. 2010-17, Revenue Recognition — Milestone Method (“ASU 2010-17”). ASU 2010-17 establishes criteria for a milestone to be considered substantive and allows revenue recognition when the milestone is achieved in research or development arrangements. In addition, it requires disclosure of certain information with respect to arrangements that contain milestones. ASU 2010-17 was effective on January 1, 2011 for the Company and the adoption did not have a significant impact on the Company’s consolidated results of operations, financial position or cash flows.
Business Combinations	In December 2010, the FASB issued ASU No. 2010-29, Business Combinations (“ASU 2010-29”). ASU 2010-29 addresses diversity in practice about the interpretation of the pro forma disclosure requirement for business combinations. ASU 2010-29 requires disclosure of pro forma revenue and earnings for the current reporting period as though the acquisition date for all business combinations that occurred during the year had been as of the beginning of the annual reporting period for both the current and any comparable periods reported. The Company adopted the disclosure requirements of ASU 2010-29 effective January 1, 2011.

Earnings Per Share (Tables)

3 Months Ended

Mar. 31, 2011

Earnings Per Share (Tables) [Abstract]

Number of weighted average shares


	Three Months Ended
	March 31,
	2011		2010
	(In thousands)
Weighted average shares:
Basic shares		159,728		159,928
Stock option and award plans		2,458		1,427

Diluted shares		162,186		161,355

Comprehensive Income (Tables)

3 Months Ended

Mar. 31, 2011

Comprehensive Income (Tables) [Abstract]

Components of comprehensive income


	Three Months Ended
	March 31,
	2011		2010
	(In thousands)
Net income	$	90,435	$	57,945
Foreign currency translation adjustment		14,496		(29,107	)
Foreign currency net investment hedge*		3,695		(4,393	)
Other		106		233

Total comprehensive income	$	108,732	$	24,678


*		Represents the net gains and losses on the Company’s investment in certain foreign operations in excess of the net gains and losses from the non-derivative foreign-currency-denominated long-term debt. These debt instruments were designated as hedging instruments to offset foreign exchange gains or losses on the net investment in certain foreign operations.

Inventories (Tables)

3 Months Ended

Mar. 31, 2011

Inventories (Tables) [Abstract]

Inventories


	March 31,		December 31,
	2011		2010
	(In thousands)
Finished goods and parts	$	53,229	$	46,953
Work in process		73,388		73,556
Raw materials and purchased parts		224,807		214,744

Total inventories	$	351,424	$	335,253

Goodwill (Tables)

3 Months Ended

Mar. 31, 2011

Goodwill (Tables) [Abstract]

Changes in the carrying amounts of goodwill by segment

EIG

EMG

Total

(In millions)

Balance at December 31, 2010

864.4

709.2

1,573.6

Purchase price allocation adjustments and other

2.9

(0.6

)

2.3

Foreign currency translation adjustments

11.7

4.2

15.9

Balance at March 31, 2011

879.0

712.8

1,591.8

Income Taxes (Tables)

3 Months Ended

Mar. 31, 2011

Income Taxes (Tables) [Abstract]

Reconciliation of liability for uncertain tax positions


Balance at December 31, 2010	$	22.8
Additions for tax positions		4.1
Reductions for tax positions		(1.1	)

Balance at March 31, 2011	$	25.8

Financial Instruments (Tables)

3 Months Ended

Mar. 31, 2011

Financial Instruments (Tables) [Abstract]

Estimated fair values and recorded amounts of the Company's financial instruments


	Asset (Liability)
	March 31, 2011						December 31, 2010
	Recorded						Recorded
	Amount			Fair Value			Amount			Fair Value
	(In thousands)
Short-term borrowings	$	—		$	—		$	(95,904	)	$	(95,904	)
Long-term debt (including current portion)		(1,083,348	)		(1,174,654	)		(1,072,608	)		(1,176,399	)

Share-Based Compensation (Tables)

3 Months Ended

Mar. 31, 2011

Share-Based Compensation (Tables) [Abstract]

Total share-based compensation expense


	Three Months Ended
	March 31,
	2011			2010
	(In thousands)
Stock option expense	$	1,831		$	1,638
Restricted stock expense		2,501			1,963

Total pre-tax expense		4,332			3,601
Related tax benefit		(1,389	)		(1,007	)

Reduction of net income	$	2,943		$	2,594

Retirement and Pension Plans (Tables)

3 Months Ended

Mar. 31, 2011

Retirement and Pension Plans (Tables) [Abstract]

Components of net periodic pension benefit expense


	Three Months Ended
	March 31,
	2011			2010
	(In thousands)
Defined benefit plans:
Service cost	$	1,088		$	1,186
Interest cost		7,067			6,897
Expected return on plan assets		(11,266	)		(10,219	)
Amortization of net actuarial loss and other		1,138			1,993

Pension income		(1,973	)		(143	)


Other plans:
Defined contribution plans		4,070			3,056
Foreign plans and other		1,173			1,057

Total other plans		5,243			4,113


Total net pension expense	$	3,270		$	3,970

Product Warranties (Tables)

3 Months Ended

Mar. 31, 2011

Product Warranties (Tables) [Abstract]

Changes in accrued product warranty obligation


	Three Months Ended
	March 31,
	2011			2010
	(In thousands)
Balance at the beginning of the period	$	18,347		$	16,035
Accruals for warranties issued during the period		3,569			2,723
Settlements made during the period		(2,748	)		(2,732	)
Warranty accruals related to new businesses and other		278			(350	)

Balance at the end of the period	$	19,446		$	15,676

Fourth Quarter of 2008 Restructuring Charges and Asset Write-Downs (Tables)

3 Months Ended

Mar. 31, 2011

Restructuring Charges and Asset Write Downs (Tables) [Abstract]

Restructuring accruals

Restructuring

Facility

Severance

Closures

Total

(In millions)

Restructuring accruals at December 31, 2010

6.6

0.3

6.9

Utilization

(0.9

)

(0.1

)

(1.0

)

Foreign currency translation and other

0.2

0.1

0.3

Restructuring accruals at March 31, 2011

5.9

0.3

6.2

Earnings Per Share (Details) - shares shares in Thousands	3 Months Ended
Earnings Per Share (Details) - shares shares in Thousands	Mar. 31, 2011	Mar. 31, 2010
Weighted average shares:
Basic shares	159,728	159,928
Stock option and award plans	2,458	1,427
Diluted shares	162,186	161,355

Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended
Comprehensive Income (Details) - USD ($) $ in Thousands	Mar. 31, 2011	Mar. 31, 2010
Components of comprehensive income
Net income	$ 90,435	$ 57,945
Foreign currency translation adjustment	14,496	(29,107)
Foreign currency net investment hedge	3,695	(4,393)
Other	106	233
Total comprehensive income	$ 108,732	$ 24,678

Fair Value Measurements (Details) $ in Millions	Mar. 31, 2011 USD ($)
Level 1 [Member]
Fair Value Measurements (Textuals)
Marketable securities	$ 1.8
Level 2 [Member]
Fair Value Measurements (Textuals)
Marketable securities	$ 4.9

Hedging Activities (Details) $ in Millions	Mar. 31, 2011 USD ($)
Hedging Activities (Textuals)
Currency remeasurement losses	$ 9.3
British pound-denominated loans [Member]
Hedging Activities (Textuals)
Hedge against the net investment in foreign subsidiaries acquired	192.5
Euro-denominated loans [Member]
Hedging Activities (Textuals)
Hedge against the net investment in foreign subsidiaries acquired	$ 70.9

Inventories (Details) - USD ($)
$ in Thousands

Mar. 31, 2011

Dec. 31, 2010

Inventories

Finished goods and parts

$ 53,229

$ 46,953

Work in process

73,388

73,556

Raw materials and purchased parts

224,807

214,744

Total inventories

$ 351,424

^[1]

$ 335,253

[1]

Unaudited

Goodwill (Details)
$ in Thousands

3 Months Ended

Mar. 31, 2011

USD ($)

Changes in the carrying amounts of goodwill by segment

Balance at December 31, 2010

$ 1,573,645

Purchase price allocation adjustments and other

2,300

Foreign currency translation adjustments

15,900

Balance at March 31, 2011

1,591,779

^[1]

EMG [Member]

Changes in the carrying amounts of goodwill by segment

Balance at December 31, 2010

709,200

Purchase price allocation adjustments and other

(600)

Foreign currency translation adjustments

4,200

Balance at March 31, 2011

712,800

EIG [Member]

Changes in the carrying amounts of goodwill by segment

Balance at December 31, 2010

864,400

Purchase price allocation adjustments and other

2,900

Foreign currency translation adjustments

11,700

Balance at March 31, 2011

$ 879,000

[1]

Unaudited

Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended
Income Taxes (Details) - USD ($) $ in Millions	Mar. 31, 2011	Mar. 31, 2011
Reconciliation of liability for uncertain tax positions
Balance at December 31, 2010	$ 22.8
Additions for tax positions	4.1
Reductions for tax positions	(1.1)
Balance at March 31, 2011	25.8
Income Taxes (Textuals)
Gross unrecognized tax benefits	$ 22.8	$ 25.8
Total amount of unrecognized tax benefits that would impact tax rate, if recognized		$ 21.2

Financial Instruments (Details) - USD ($) $ in Thousands	Mar. 31, 2011	Dec. 31, 2010
Recorded Amount [Member]
Estimated fair values and recorded amounts of the Company's financial instruments
Short-term borrowings	$ 0	$ (95,904)
Long-term debt (including current portion)	(1,083,348)	(1,072,608)
Fair Value [Member]
Estimated fair values and recorded amounts of the Company's financial instruments
Short-term borrowings	0	(95,904)
Long-term debt (including current portion)	$ (1,174,654)	$ (1,176,399)

Share-Based Compensation (Details) - USD ($) $ in Thousands	3 Months Ended
Share-Based Compensation (Details) - USD ($) $ in Thousands	Jun. 30, 2011	Apr. 06, 2011	Mar. 31, 2011	Mar. 31, 2010
Total share-based compensation expense
Stock option expense			$ 1,831	$ 1,638
Restricted stock expense			2,501	1,963
Total pre-tax expense			4,332	3,601
Related tax benefit			(1,389)	(1,007)
Reduction of net income			$ 2,943	$ 2,594
Share-Based Compensation (Textuals)
Restricted shares vested		509,709
Vesting charges, pre-tax	$ 5,200
Vesting charges, net after-tax	$ 3,600
Vesting period		certain events, including doubling of the grant price of the Company’s common stock as of the close of business during any five consecutive trading days

Retirement and Pension Plans (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2011	Mar. 31, 2010
Defined benefit plans:
Service cost	$ 1,088	$ 1,186
Interest cost	7,067	6,897
Expected return on plan assets	(11,266)	(10,219)
Amortization of net actuarial loss and other	1,138	1,993
Total net periodic benefit (income) expense	(1,973)	(143)
Other plans:
Defined contribution plans	4,070	3,056
Foreign plans and other	1,173	1,057
Total other plans	5,243	4,113
Total net pension expense	$ 3,270	$ 3,970

Product Warranties (Details) - USD ($) $ in Thousands	3 Months Ended
Product Warranties (Details) - USD ($) $ in Thousands	Mar. 31, 2011	Mar. 31, 2010
Changes in accrued product warranty obligation
Balance at the beginning of the period	$ 18,347	$ 16,035
Accruals for warranties issued during the period	3,569	2,723
Settlements made during the period	(2,748)	(2,732)
Warranty accruals related to new businesses and other	278	(350)
Balance at the end of the period	$ 19,446	$ 15,676

Contingencies (Details) $ in Millions	3 Months Ended
Contingencies (Details) $ in Millions	Mar. 31, 2011 USD ($)	Dec. 31, 2010 USD ($)
Contingencies (Textuals)
Number of non-owned sites the Company is named a Potentially Responsible Party	16
Number of non-owned sites the Company is identified as a de minimis party	14
Number of non-owned sites the Company has reached a tentative settlement agreement	10
Number of non-owned sites the Company is still working to establish a settlement amount	4
Number of non-owned sites where reserves have been established and are sufficient to satisfy the Company's expected obligation	2
Total environmental reserves	$ 31.2	$ 31.3
Reserves related to a business acquisition	1.0
Total expenses related to environmental matters	1.1
Reserves related to an owned site acquired	19.5	$ 18.9
Receivables related to HCC for probable recoveries from third-party funds	14.8
Amount for which the Company is indemnified by HCC's former owners	$ 19.0

Reportable Segments (Details)	3 Months Ended
Reportable Segments (Details)	Mar. 31, 2011
Reportable Segments (Textuals)
Number of reportable segments	2

Fourth Quarter of 2008 Restructuring Charges and Asset Write-Downs (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended
	Mar. 31, 2011	Dec. 31, 2008
Fourth Quarter of 2008 Restructuring Charges and Asset Write-Downs (Textuals)
Total pre-tax charges including restructuring costs and asset write-downs		$ 40.0
Reduction in net income		$ 27.3
Reduction in net income in terms of diluted earnings per share		$ 0.17
Asset write-downs		$ 7.4
Charges related to severance costs		$ 30.1
Percentage of Company's workforce for which severance costs applied		10.00%
Charges related to lease termination costs		$ 1.5
Restructuring accruals
Restructuring accruals at December 31, 2010	$ 6.9
Utilization	(1.0)
Foreign currency translation and other	0.3
Restructuring accruals at March 31, 2011	6.2
Electromechanical Group Segment Operating Income [Member]
Fourth Quarter of 2008 Restructuring Charges and Asset Write-Downs (Textuals)
Total pre-tax charges including restructuring costs and asset write-downs		19.4
Electronic Instruments Group Segment Operating Income [Member]
Fourth Quarter of 2008 Restructuring Charges and Asset Write-Downs (Textuals)
Total pre-tax charges including restructuring costs and asset write-downs		20.4
Cost of Sales [Member]
Fourth Quarter of 2008 Restructuring Charges and Asset Write-Downs (Textuals)
Total pre-tax charges including restructuring costs and asset write-downs		32.9
Selling, General and Administrative Expenses [Member]
Fourth Quarter of 2008 Restructuring Charges and Asset Write-Downs (Textuals)
Total pre-tax charges including restructuring costs and asset write-downs		7.1
Corporate Administrative and Other Expenses Segment Operating Income [Member]
Fourth Quarter of 2008 Restructuring Charges and Asset Write-Downs (Textuals)
Total pre-tax charges including restructuring costs and asset write-downs		0.2
Severance [Member]
Restructuring accruals
Restructuring accruals at December 31, 2010	6.6
Utilization	(0.9)
Foreign currency translation and other	0.2
Restructuring accruals at March 31, 2011	5.9
Facility Closures [Member]
Restructuring accruals
Restructuring accruals at December 31, 2010	0.3
Utilization	(0.1)
Foreign currency translation and other	0.1
Restructuring accruals at March 31, 2011	$ 0.3
Employee Reductions And Facility Closures [Member]
Fourth Quarter of 2008 Restructuring Charges and Asset Write-Downs (Textuals)
Total pre-tax charges including restructuring costs and asset write-downs		$ 32.6

Subsequent Event (Details) $ in Millions	1 Months Ended
Subsequent Event (Details) $ in Millions	Apr. 30, 2011 USD ($)
Subsequent Event (Textuals)
Estimated annual sales of acquired entity	$ 25.0