EMCOR (EME) 10-Q 24 Oct 13 2013 Q3 Quarterly report Financial data

Document_And_Entity_Informatio

Document And Entity Information	9 Months Ended
	Sep. 30, 2013	Oct. 21, 2013
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	FALSE
Document Period End Date	30-Sep-13
Document Fiscal Year Focus	2013
Document Fiscal Period Focus	Q3
Entity Registrant Name	EMCOR GROUP INC
Entity Central Index Key	105634
Current Fiscal Year End Date	-19
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		67,131,672

Condensed_Consolidated_Balance

Condensed Consolidated Balance Sheets (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Current assets:
Cash and cash equivalents	$444,037	$605,303
Accounts receivable, net	1,286,237	1,221,956
Costs and estimated earnings in excess of billings on uncompleted contracts	110,241	93,061
Inventories	42,724	50,512
Prepaid expenses and other	85,247	73,621
Total current assets	1,968,486	2,044,453
Investments, notes and other long-term receivables	5,865	4,959
Property, plant and equipment, net	123,138	116,631
Goodwill	829,316	566,588
Identifiable intangible assets, net	550,785	343,748
Other assets	29,169	30,691
Total assets	3,506,759	3,107,070
Current liabilities:
Borrowings under revolving credit facility	0	0
Current maturities of long-term debt and capital lease obligations	1,882	1,787
Accounts payable	479,604	490,621
Billings in excess of costs and estimated earnings on uncompleted contracts	390,606	383,527
Accrued payroll and benefits	241,181	224,555
Other accrued expenses and liabilities	178,743	194,029
Total current liabilities	1,292,016	1,294,519
Borrowings under revolving credit facility	400,000	150,000
Long-term debt and capital lease obligations	3,195	4,112
Other long-term obligations	376,347	301,260
Total liabilities	2,071,558	1,749,891
EMCOR Group, Inc. stockholders' equity:
Preferred stock, $0.01 par value, 1,000,000 shares authorized, zero issued and outstanding	0	0
Common stock, $0.01 par value, 200,000,000 shares authorized, 68,121,910 and 68,010,419 shares issued, respectively	681	680
Capital surplus	420,974	416,104
Accumulated other comprehensive loss	-79,789	-81,040
Retained earnings	1,092,018	1,022,239
Treasury stock, at cost 996,257 and 1,046,257 shares, respectively	-11,696	-11,903
Total EMCOR Group, Inc. stockholders' equity	1,422,188	1,346,080
Noncontrolling interests	13,013	11,099
Total equity	1,435,201	1,357,179
Total liabilities and equity	$3,506,759	$3,107,070

Condensed_Consolidated_Balance1

Condensed Consolidated Balance Sheets (Parenthetical) (USD $)	Sep. 30, 2013	Dec. 31, 2012
Statement of Financial Position [Abstract]
Preferred stock, par value (in US dollars per share)	$0.01	$0.01
Preferred stock, shares authorized	1,000,000	1,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value (in US dollars per share)	$0.01	$0.01
Common stock, shares authorized	200,000,000	200,000,000
Common stock, shares issued	68,121,910	68,010,419
Treasury stock, shares	996,257	1,046,257

Condensed_Consolidated_Stateme

Condensed Consolidated Statements Of Operations (USD $)	3 Months Ended		9 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Income Statement [Abstract]
Revenues	$1,629,067	$1,606,242	$4,754,221	$4,734,798
Cost of sales	1,422,757	1,402,994	4,175,238	4,156,893
Gross profit	206,310	203,248	578,983	577,905
Selling, general and administrative expenses	149,722	134,477	427,855	406,656
Restructuring expenses	2,466	145	9,642	145
Operating income	54,122	68,626	141,486	171,104
Interest expense	-2,352	-1,807	-5,978	-5,460
Interest income	235	381	862	1,165
Income before income taxes	52,005	67,200	136,370	166,809
Income tax provision	23,112	26,890	55,285	64,711
Net income including noncontrolling interests	28,893	40,310	81,085	102,098
Less: Net income attributable to noncontrolling interests	-2,203	-729	-3,214	-1,924
Net income attributable to EMCOR Group, Inc. (in US dollars)	$26,690	$39,581	$77,871	$100,174
Basic earnings per common share:
Net income attributable to EMCOR Group, Inc. common stockholders (in US dollars per share)	$0.40	$0.59	$1.16	$1.50
Diluted earnings per common share:
Net income attributable to EMCOR Group, Inc. common stockholders (in US dollars per share)	$0.39	$0.59	$1.14	$1.48
Dividends declared per common share (in US dollars per share)	$0.06	$0	$0.12	$0.15

Condensed_Consolidated_Stateme1

Condensed Consolidated Statements Of Comprehensive Income (USD $)	3 Months Ended				9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013		Sep. 30, 2012		Sep. 30, 2013		Sep. 30, 2012
Statement of Comprehensive Income [Abstract]
Net income including noncontrolling interests	$28,893		$40,310		$81,085		$102,098
Other comprehensive income, net of tax:
Foreign currency translation adjustments	-491		172		-463		130
Post retirement plans, amortization of actuarial loss included in net income	611	[1]	542	[1]	1,714	[1]	1,589	[1]
Other comprehensive income	120		714		1,251		1,719
Comprehensive income	29,013		41,024		82,336		103,817
Less: Comprehensive income attributable to noncontrolling interests	-2,203		-729		-3,214		-1,924
Comprehensive income attributable to EMCOR Group, Inc.	$26,810		$40,295		$79,122		$101,893
[1]	Net of tax of $0.1 million and $0.2 million for the three months ended SeptemberB 30, 2013 and 2012, respectively, and $0.5 million for each of the nine month periods ended SeptemberB 30, 2013 and 2012.

Condensed_Consolidated_Stateme2

Condensed Consolidated Statements Of Comprehensive Income (Parenthetical) (USD $)	3 Months Ended		9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Statement of Comprehensive Income [Abstract]
Post retirement plans, amortization of actuarial loss included in net income, tax	$0.10	$0.20	$0.50	$0.50

Condensed_Consolidated_Stateme3

Condensed Consolidated Statements Of Cash Flows (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012
Cash flows - operating activities:
Net income including noncontrolling interests	$81,085	$102,098
Depreciation and amortization	25,907	22,577
Amortization of identifiable intangible assets	21,317	22,336
Deferred income taxes	-666	949
Excess tax benefits from share-based compensation	-1,267	-5,636
Equity income from unconsolidated entities	-880	-628
Other non-cash items	1,860	3,753
Distributions from unconsolidated entities	634	867
Changes in operating assets and liabilities, excluding the effect of businesses acquired	-59,943	-103,285
Net cash provided by operating activities	68,047	43,031
Cash flows - investing activities:
Payments for acquisitions of businesses, net of cash acquired, and related contingent consideration arrangement	-448,943	-20,613
Proceeds from sale of property, plant and equipment	1,171	1,830
Purchase of property, plant and equipment	-24,006	-29,356
Purchase of short-term investments	0	-22,433
Maturity of short-term investments	4,616	22,490
Net cash used in investing activities	-467,162	-48,082
Cash flows - financing activities:
Proceeds from revolving credit facility	250,000	0
Repayments of long-term debt	-6	-38
Repayments of capital lease obligations	-1,256	-1,654
Dividends paid to stockholders	-8,052	-9,988
Repurchase of common stock	-4,998	-23,912
Proceeds from exercise of stock options	2,320	2,953
Payments to satisfy minimum tax withholding	-927	-1,654
Issuance of common stock under employee stock purchase plan	2,088	1,913
Payments for contingent consideration arrangements	-537	-5,748
Distributions to noncontrolling interests	-1,300	-1,600
Excess tax benefits from share-based compensation	1,267	5,636
Net cash provided by (used in) financing activities	238,599	-34,092
Effect of exchange rate changes on cash and cash equivalents	-750	2,201
Decrease in cash and cash equivalents	-161,266	-36,942
Cash and cash equivalents at beginning of year	605,303	511,322
Cash and cash equivalents at end of period	444,037	474,380
Cash paid for:
Interest	4,893	3,948
Income taxes	85,479	61,026
Non-cash financing activities:
Assets acquired under capital lease obligations	$475	$1,373

Condensed_Consolidated_Stateme4

Condensed Consolidated Statements Of Equity (USD $)		Total	Common Stock [Member]	Capital Surplus [Member]	Accumulated Other Comprehensive (Loss) Income [Member]		Retained Earnings [Member]	Treasury Stock [Member]	Noncontrolling Interests [Member]
In Thousands
Balance at Dec. 31, 2011		$1,245,131	$681	$417,136	($78,649)	[1]	$910,042	($14,476)	$10,397
Net income including noncontrolling interests		102,098					100,174		1,924
Other comprehensive income		1,719			1,719	[1]
Common stock issued under share-based compensation plans	[2]	8,198	6	6,363				1,829
Common stock issued under employee stock purchase plan		1,913		1,913
Common stock dividends		-9,988		90			-10,078
Repurchase of common stock		-23,912	-9	-23,903
Distributions to noncontrolling interests		-1,600							-1,600
Share-based compensation expense		5,285		5,285
Balance at Sep. 30, 2012		1,328,844	678	406,884	-76,930	[1]	1,000,138	-12,647	10,721
Balance at Dec. 31, 2012		1,357,179	680	416,104	-81,040	[1]	1,022,239	-11,903	11,099
Net income including noncontrolling interests		81,085					77,871		3,214
Other comprehensive income		1,251			1,251	[1]
Common stock issued under share-based compensation plans	[2]	2,660	2	2,451				207
Common stock issued under employee stock purchase plan		2,088		2,088
Common stock dividends		-8,052		40			-8,092
Repurchase of common stock		-4,998	-1	-4,997
Distributions to noncontrolling interests		-1,300							-1,300
Share-based compensation expense		5,288		5,288
Balance at Sep. 30, 2013		$1,435,201	$681	$420,974	($79,789)	[1]	$1,092,018	($11,696)	$13,013
[1]	Represents cumulative foreign currency translation adjustments and post retirement liability adjustments.
[2]	Includes the tax benefit associated with share-based compensation of $1.3 million and $6.9 million for the nine months ended SeptemberB 30, 2013 and 2012, respectively.

Condensed_Consolidated_Stateme5

Condensed Consolidated Statements Of Equity (Parenthetical) (USD $)	9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012
Statement of Stockholders' Equity [Abstract]
Tax benefit associated with share-based compensation	$1.30	$6.90

Basis_Of_Presentation

Basis Of Presentation	9 Months Ended
	Sep. 30, 2013
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis Of Presentation	Basis of Presentation
	The accompanying condensed consolidated financial statements have been prepared without audit, pursuant to the interim period reporting requirements of Form 10-Q. Consequently, certain information and note disclosures normally included in financial statements prepared in accordance with accounting principles generally accepted in the United States have been condensed or omitted. References to the “Company,” “EMCOR,” “we,” “us,” “our” and similar words refer to EMCOR Group, Inc. and its consolidated subsidiaries unless the context indicates otherwise. Readers of this report should refer to the consolidated financial statements and the notes thereto included in our latest Annual Report on Form 10-K filed with the Securities and Exchange Commission.
	In our opinion, the accompanying unaudited condensed consolidated financial statements contain all adjustments (consisting only of a normal recurring nature) necessary to present fairly our financial position and the results of our operations. The results of operations for the nine months ended September 30, 2013 are not necessarily indicative of the results to be expected for the year ending December 31, 2013.
	During the third quarter of 2013, we completed the acquisition of RepconStrickland, Inc. (“RSI”), a leading provider of recurring turnaround and specialty services to the North American refinery and petrochemical markets. In connection with the acquisition of RSI and to reflect changes in our internal reporting structure and the information used by management to make operating decisions and assess performance, we created a new segment that includes RSI and certain businesses that had been part of our United States facilities services segment. The new segment is called the United States industrial services segment and the segment formerly named United States facilities services segment has been renamed United States building services segment.
	Our reportable segments have been restated in all periods presented to reflect the changes in our segments mentioned above. In addition, our reportable segments reflect certain reclassifications of prior year amounts from our United States building services segment to our United States mechanical construction and facilities services segment due to changes in our internal reporting structure.

New_Accounting_Pronouncements

New Accounting Pronouncements	9 Months Ended
	Sep. 30, 2013
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]
New Accounting Pronouncements	New Accounting Pronouncements
	On January 1, 2013, we adopted an accounting pronouncement giving companies the option to perform a qualitative impairment assessment for their indefinite-lived intangible assets that may allow them to skip the annual fair value calculation. To perform a qualitative assessment, a company must identify and evaluate changes in economic, industry and company-specific events and circumstances that could affect the significant inputs used to determine the fair value of an indefinite-lived intangible asset. The adoption of this pronouncement did not have any effect on our financial position or results of operations, though it may impact the manner in which we perform future or prospective testing for indefinite-lived intangible asset impairment.
	On January 1, 2013, we adopted an accounting pronouncement requiring preparers to report, in one place, information about reclassifications out of accumulated other comprehensive income ("AOCI"). It also required companies to report changes in AOCI balances. Public companies must provide the required information (e.g., changes in AOCI balances and reclassifications out of AOCI) in interim and annual periods. The adoption of this pronouncement did not have any effect on our financial position or results of operations.

Acquisitions_Of_Businesses

Acquisitions Of Businesses	9 Months Ended
	Sep. 30, 2013
Business Combinations [Abstract]
Acquisitions Of Businesses	Acquisitions of Businesses
	On July 29, 2013, we completed the acquisition of RSI. Under the terms of the transaction, we acquired 100% of RSI's stock for total consideration of $460.7 million. The acquisition was funded with cash on hand and $250.0 million from borrowings under our revolving credit facility. This acquisition was accounted for using the acquisition method of accounting. We acquired working capital of $37.4 million and other net liabilities of $66.4 million, and have preliminarily ascribed $262.3 million to goodwill and $227.4 million to identifiable intangible assets in connection with this acquisition, which has been included in our United States industrial services segment. We have not yet completed the final allocation of the purchase price related to the RSI acquisition. As we finalize the purchase price allocation, it is anticipated that additional purchase price adjustments will be recorded relating to finalization of intangible asset valuations, tax matters and other items. Such adjustments will be recorded during the measurement period. The finalization of the purchase price accounting assessment may result in changes in the valuation of assets and liabilities acquired, which are not expected to be significant.
	On May 31, 2013 and January 4, 2012, we acquired two companies, each for an immaterial amount. These companies primarily provide mechanical construction services and have been included in our United States mechanical construction and facilities services segment. The purchase price accounting for the acquisition of these businesses was finalized with an insignificant impact during 2013 and 2012, respectively. The acquisition of these businesses was accounted for by the acquisition method, and the prices paid for them have been allocated to their respective assets and liabilities, based upon the estimated fair values of their respective assets and liabilities at the dates of their respective acquisition. We believe these businesses further expand our service capabilities into new technical areas.
	During the three months ended September 30, 2013 and 2012, respectively, we recorded a reversal of $3.1 million and $3.0 million of liabilities resulting in non-cash income attributable to contingent consideration arrangements relating to prior acquisitions. During the nine months ended September 30, 2013 and 2012, respectively, we recorded a net reversal of $6.0 million and $3.0 million of liabilities resulting in non-cash income attributable to contingent consideration arrangements relating to prior acquisitions.

Earnings_Per_Share

Earnings Per Share	9 Months Ended
	Sep. 30, 2013
Earnings Per Share [Abstract]
Earnings Per Share	Earnings Per Share
	Calculation of Basic and Diluted Earnings per Common Share
	The following tables summarize our calculation of Basic and Diluted Earnings per Common Share (“EPS”) for the three and nine months ended September 30, 2013 and 2012 (in thousands, except share and per share data):
		For the three months ended September 30,
		2013		2012
	Numerator:
	Net income attributable to EMCOR Group, Inc. common stockholders	$	26,690	$	39,581
	Denominator:
	Weighted average shares outstanding used to compute basic earnings per common share	67,174,848		66,568,318
	Effect of dilutive securities—Share-based awards	988,853		943,389
	Shares used to compute diluted earnings per common share	68,163,701		67,511,707
	Basic earnings per common share:
	Net income attributable to EMCOR Group, Inc. common stockholders	$	0.4	$	0.59
	Diluted earnings per share:
	Net income attributable to EMCOR Group, Inc. common stockholders	$	0.39	$	0.59
		For the nine months ended September 30,
		2013		2012
	Numerator:
	Net income attributable to EMCOR Group, Inc. common stockholders	$	77,871	$	100,174
	Denominator:
	Weighted average shares outstanding used to compute basic earnings per common share	67,127,149		66,667,681
	Effect of dilutive securities—Share-based awards	992,591		1,050,023
	Shares used to compute diluted earnings per common share	68,119,740		67,717,704
	Basic earnings per common share:
	Net income attributable to EMCOR Group, Inc. common stockholders	$	1.16	$	1.5
	Diluted earnings per share:
	Net income attributable to EMCOR Group, Inc. common stockholders	$	1.14	$	1.48
	There were zero anti-dilutive stock options that were excluded from the calculation of diluted EPS for both the three and nine months ended September 30, 2013. There were 140,096 anti-dilutive stock options that were excluded from the calculation of diluted EPS for each of the three and nine months ended September 30, 2012, respectively.

Inventories

Inventories	9 Months Ended
	Sep. 30, 2013
Inventory Disclosure [Abstract]
Inventories	Inventories
	Inventories in the accompanying Condensed Consolidated Balance Sheets consisted of the following amounts (in thousands):
		September 30,		December 31,
		2013		2012
	Raw materials and construction materials	$	20,864	$	20,994
	Work in process	21,860		29,518
		$	42,724	$	50,512

Debt

Debt	9 Months Ended
	Sep. 30, 2013
Debt Disclosure [Abstract]
Debt	Debt
	Debt in the accompanying Condensed Consolidated Balance Sheets consisted of the following amounts (in thousands):
		September 30,		December 31,
		2013		2012
	2011 Revolving Credit Facility	$	400,000	$	150,000
	Capitalized lease obligations	5,065		5,881
	Other	12		18
		405,077		155,899
	Less: current maturities	1,882		1,787
		$	403,195	$	154,112
	Credit Facilities
	Effective November 21, 2011, we entered into an amended and restated $750.0 million revolving credit facility (the “2011 Revolving Credit Facility”). The 2011 Revolving Credit Facility expires on November 21, 2016 and permits us to increase our borrowing to $900.0 million if additional lenders are identified and/or existing lenders are willing to increase their current commitments. We may allocate up to $250.0 million of the borrowing capacity under the 2011 Revolving Credit Facility to letters of credit. The 2011 Revolving Credit Facility is guaranteed by most of our direct and indirect subsidiaries and is secured by substantially all of our assets and most of the assets of most of our subsidiaries. The 2011 Revolving Credit Facility contains various covenants providing for, among other things, maintenance of certain financial ratios and certain limitations on payment of dividends, common stock repurchases, investments, acquisitions, indebtedness and capital expenditures. A commitment fee is payable on the average daily unused amount of the 2011 Revolving Credit Facility, which ranges from 0.25% to 0.35%, based on certain financial tests. The fee in effect on September 30, 2013 was 0.25% of the unused amount as of such date. Borrowings under the 2011 Revolving Credit Facility bear interest at (1) a rate which is the prime commercial lending rate announced by Bank of Montreal from time to time (3.25% at September 30, 2013) plus 0.50% to 1.00%, based on certain financial tests or (2) United States dollar LIBOR (0.18% at September 30, 2013) plus 1.50% to 2.00%, based on certain financial tests. The interest rate in effect at September 30, 2013 was 1.68%. Letters of credit fees issued under this facility range from 1.50% to 2.00% of the respective face amounts of the letters of credit issued and are computed based on certain financial tests. We capitalized approximately $4.2 million of debt issuance costs associated with the 2011 Revolving Credit Facility. This amount is being amortized over the life of the facility and is included as part of interest expense. As of September 30, 2013 and December 31, 2012, we had approximately $78.9 million and $84.0 million of letters of credit outstanding, respectively. We have borrowings of $400.0 million outstanding under the 2011 Revolving Credit Facility at September 30, 2013, which may remain outstanding at our discretion until the 2011 Revolving Credit Facility expires.

Fair_Value_Measurements

Fair Value Measurements	9 Months Ended
	Sep. 30, 2013
Fair Value Disclosures [Abstract]
Fair Value Measurements	Fair Value Measurements
	We use a fair value hierarchy that prioritizes the inputs to valuation techniques used to measure fair value. The hierarchy, which gives the highest priority to quoted prices in active markets, is comprised of the following three levels:
	Level 1 – Unadjusted quoted market prices in active markets for identical assets and liabilities.
	Level 2 – Observable inputs, other than Level 1 inputs. Level 2 inputs would typically include quoted prices in markets that are not active or financial instruments for which all significant inputs are observable, either directly or indirectly.
	Level 3 – Prices or valuations that require inputs that are both significant to the measurement and unobservable.
	The following tables provide the assets and liabilities carried at fair value measured on a recurring basis as of September 30, 2013 and December 31, 2012 (in thousands):
		Assets at Fair Value as of September 30, 2013
	Asset Category	Level 1		Level 2	Level 3	Total
	Cash and cash equivalents (1)	$	444,037	—	—	$	444,037
	Restricted cash (2)	7,058		—	—	7,058
	Short-term investments (2)	—		—	—	—
	Total	$	451,095	—	—	$	451,095
		Assets at Fair Value as of December 31, 2012
	Asset Category	Level 1		Level 2	Level 3	Total
	Cash and cash equivalents (1)	$	605,303	—	—	$	605,303
	Restricted cash (2)	6,281		—	—	6,281
	Short-term investments (2)	4,879		—	—	4,879
	Total	$	616,463	—	—	$	616,463
	_________
	-1	Cash and cash equivalents consist primarily of money market funds with original maturity dates of three months or less, which are Level 1 assets. At September 30, 2013 and December 31, 2012, we had $147.2 million and $407.4 million, respectively, in money market funds.
	-2	Restricted cash and short-term investments with original maturities greater than three months are classified as “Prepaid expenses and other” on our Condensed Consolidated Balance Sheets.
	We believe that the carrying values of our financial instruments, which include accounts receivable and other financing commitments, approximate their fair values due primarily to their short-term maturities and low risk of counterparty default. The carrying value of our 2011 Revolving Credit Facility approximates the fair value due to the variable rate on such debt.

Income_Taxes

Income Taxes	9 Months Ended
	Sep. 30, 2013
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes
	For the three months ended September 30, 2013 and 2012, our income tax provision was $23.1 million and $26.9 million, respectively, based on effective income tax rates, before discrete items and less amounts attributable to noncontrolling interests, of 40.8% and 37.6%, respectively. The actual income tax rates on income before income taxes, less amounts attributable to noncontrolling interests, for the three months ended September 30, 2013 and 2012, inclusive of discrete items, were 46.4% and 40.5%, respectively. For the nine months ended September 30, 2013 and 2012, our income tax provision was $55.3 million and $64.7 million, respectively, based on effective income tax rates, before discrete items and less amounts attributable to noncontrolling interests, of 39.9% and 38.0%, respectively. The actual income tax rates on income before income taxes, less amounts attributable to noncontrolling interests, for the nine months ended September 30, 2013 and 2012, inclusive of discrete items, were 41.5% and 39.2%, respectively. The decrease in the 2013 income tax provision was primarily due to reduced income before income taxes and a change in the allocation of earnings amongst various jurisdictions. The increase in the 2013 effective income tax rates was primarily due to the impact of operating losses incurred in the United Kingdom and the effect of the United Kingdom tax rate change on both current and deferred tax balances.
	As of September 30, 2013 and December 31, 2012, the amount of unrecognized income tax benefits for each period was $11.3 million (of which $6.6 million, if recognized, would favorably affect our effective income tax rate).
	We report interest expense related to unrecognized income tax benefits in the income tax provision. As of September 30, 2013 and December 31, 2012, we had approximately $3.2 million and $2.6 million, respectively, of accrued interest related to unrecognized income tax benefits included as a liability on the Condensed Consolidated Balance Sheets. For the three months ended September 30, 2013 and 2012, $0.2 million and $0.1 million of interest expense was recognized, respectively. For the nine months ended September 30, 2013 and 2012, $0.6 million and $0.2 million of interest expense was recognized, respectively.
	It is possible that approximately $5.0 million of unrecognized income tax benefits at September 30, 2013, primarily relating to uncertain tax positions attributable to certain intercompany transactions and related filing positions and compensation related accruals, will become recognized income tax benefits in the next twelve months due to the expiration of applicable statutes of limitations and settlements.
	We file income tax returns with the Internal Revenue Service and various state, local and foreign tax agencies. The Company is currently under examination by various taxing authorities for the years 2008 through 2011. The Internal Revenue Service is currently auditing our 2011 and 2010 federal income tax returns.

Common_Stock

Common Stock	9 Months Ended
	Sep. 30, 2013
Stockholders' Equity Note [Abstract]
Common Stock	Common Stock
	As of September 30, 2013 and December 31, 2012, 67,125,653 and 66,964,162 shares of our common stock were outstanding, respectively.
	During the three months ended September 30, 2013 and 2012, 28,493 and 83,875 shares of common stock, respectively, were issued primarily upon: (a) the satisfaction of required conditions under certain of our share-based compensation plans, (b) the purchase of common stock pursuant to our employee stock purchase plan and (c) the exercise of stock options. During the nine months ended September 30, 2013 and 2012, 243,690 and 502,515 shares of common stock, respectively, were issued primarily upon: (a) the satisfaction of required conditions under certain of our share-based compensation plans, (b) the exercise of stock options and (c) the purchase of common stock pursuant to our employee stock purchase plan.
	On September 26, 2011, our Board of Directors authorized the Company to repurchase up to $100.0 million of its outstanding common stock. During 2013, we repurchased approximately 0.1 million shares of our common stock for approximately $5.0 million. Since the inception of the repurchase program, we have repurchased 2.2 million shares of our common stock for approximately $56.4 million through September 30, 2013, and there remains authorization for us to repurchase approximately $43.6 million of our shares. The repurchase program does not obligate the Company to acquire any particular amount of common stock and may be suspended, recommenced or discontinued at any time or from time to time without prior notice. Acquisitions under our repurchase program may be made from time to time to the extent permitted by securities laws and other legal requirements, including provisions in our revolving credit facility placing limitations on such repurchases. The repurchase program has been and will be funded from our operations.

Retirement_Plans

Retirement Plans	9 Months Ended
	Sep. 30, 2013
Compensation and Retirement Disclosure [Abstract]
Retirement Plans	Retirement Plans
	Our United Kingdom subsidiary has a defined benefit pension plan covering all eligible employees (the “UK Plan”); however, no individual joining the company after October 31, 2001 may participate in the plan. On May 31, 2010, we curtailed the future accrual of benefits for active employees under this plan.
	Components of Net Periodic Pension Cost
	The components of net periodic pension cost of the UK Plan for the three and nine months ended September 30, 2013 and 2012 were as follows (in thousands):
		For the three months ended September 30,						For the nine months ended September 30,
		2013			2012			2013			2012
	Interest cost	$	3,044		$	3,102		$	9,147		$	9,323
	Expected return on plan assets	(3,549		)	(3,251		)	(10,664		)	(9,772		)
	Amortization of unrecognized loss	633			606			1,902			1,823
	Net periodic pension cost	$	128		$	457		$	385		$	1,374
	Employer Contributions
	For the nine months ended September 30, 2013, our United Kingdom subsidiary contributed approximately $4.2 million to its defined benefit pension plan. It anticipates contributing an additional $1.5 million during the remainder of 2013.

Commitments_and_Contingencies

Commitments and Contingencies	9 Months Ended
	Sep. 30, 2013
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies
	Government Contracts
	As a government contractor, we are subject to U.S. government audits and investigations relating to our operations, including claims for fines, penalties and compensatory and treble damages, and possible suspension or debarment from doing business with the government. Based on currently available information, we believe the outcome of ongoing government disputes and investigations will not have a material impact on our financial position, results of operations or liquidity.
	Legal Matters
	One of our subsidiaries was a subcontractor to a mechanical contractor ("Mechanical Contractor") on a construction project where an explosion occurred. An investigation of the matter could not determine who was responsible for the explosion. As a result of the explosion, lawsuits have been commenced against various parties, but, to date, no lawsuits have been commenced against our subsidiary with respect to personal injury or damage to property as a consequence of the explosion. However, the Mechanical Contractor has asserted claims, in the context of an arbitration proceeding against our subsidiary, alleging that our subsidiary is responsible for a portion of the damages for which the Mechanical Contractor may be liable as a result of: (a) losses asserted by the owner of the project and/or the owner's general contractor because of delays in completion of the project and damages to its property, (b) personal injury suffered by individuals as a result of the explosion and (c) the Mechanical Contractor's legal fees in defending against any and all such claims. We believe, and have been advised by counsel, that we have a number of meritorious defenses to all such matters. We believe that the ultimate outcome of such matters will not have a material adverse effect on our consolidated financial position, results of operations or liquidity. Notwithstanding our assessment of the final impact of this matter, we are not able to estimate with any certainty the amount of loss, if any, which would be associated with an adverse resolution.
	We are involved in several proceedings in which damages and claims have been asserted against us. Other potential claims may exist that have not yet been asserted against us. We believe that we have a number of valid defenses to such proceedings and claims and intend to vigorously defend ourselves. We do not believe that any such matters will have a material adverse effect on our financial position, results of operations or liquidity. Litigation is subject to many uncertainties and the outcome of litigation is not predictable with assurance. It is possible that some litigation matters for which reserves have not been established could be decided unfavorably to us, and that any such unfavorable decisions could have a material adverse effect on our financial position, results of operations or liquidity.
	Restructuring expenses
	Restructuring expenses were $2.5 million and $9.6 million for the three and nine months ended September 30, 2013, respectively, which primarily related to employee severance obligations and the termination of leased facilities in the construction operations of our United Kingdom construction and facilities services segment. Restructuring expenses for the three months ended September 30, 2013 included $1.9 million of employee severance obligations and $0.6 million relating to the termination of leased facilities. Restructuring expenses for the nine months ended September 30, 2013 included $8.4 million of employee severance obligations and $1.2 million relating to the termination of leased facilities. The majority of these restructuring expenses were as a result of our decision earlier this year to withdraw from the construction market in the United Kingdom. This decision was based on recurring losses over the last several years in the construction operations of our United Kingdom segment and our negative assessment of construction market conditions in the United Kingdom for the foreseeable future. Restructuring expenses were $0.1 million for each of the three and nine months ended September 30, 2012. As of September 30, 2013, the balance of obligations yet to be paid was $4.7 million, the majority of which is expected to be paid through 2014. We expect to incur an additional $3.3 million of expenses in connection with this restructuring through 2014.

Segment_Information

Segment Information	9 Months Ended
	Sep. 30, 2013
Segment Reporting [Abstract]
Segment Information	Segment Information
	We have the following reportable segments: (a) United States electrical construction and facilities services (involving systems for electrical power transmission and distribution; premises electrical and lighting systems; low-voltage systems, such as fire alarm, security and process control; voice and data communication; roadway and transit lighting; and fiber optic lines); (b) United States mechanical construction and facilities services (involving systems for heating, ventilation, air conditioning, refrigeration and clean-room process ventilation; fire protection; plumbing, process and high-purity piping; controls and filtration; water and wastewater treatment and central plant heating and cooling; cranes and rigging; millwrighting; and steel fabrication, erection and welding); (c) United States building services; (d) United States industrial services; and (e) United Kingdom construction and facilities services. The segment “United States building services” principally consists of those operations which provide a portfolio of services needed to support the operation and maintenance of customers’ facilities. The segment "United States industrial services" principally consists of those operations which provide industrial maintenance and services, including those for refineries and petrochemical plants. The United Kingdom construction and facilities services segment performs electrical construction, mechanical construction and facilities services.
	The following tables have been restated in all periods presented to reflect our new reportable segments (see Note 1, "Basis of Presentation" for further information) and represent information about industry segments and geographic areas for the three and nine months ended September 30, 2013 and 2012 (in thousands):
		For the three months ended September 30,
		2013			2012
	Revenues from unrelated entities:
	United States electrical construction and facilities services	$	340,529		$	318,960
	United States mechanical construction and facilities services	616,403			593,448
	United States building services	457,777			444,510
	United States industrial services	110,879			125,412
	Total United States operations	1,525,588			1,482,330
	United Kingdom construction and facilities services	103,479			123,912
	Total worldwide operations	$	1,629,067		$	1,606,242
	Total revenues:
	United States electrical construction and facilities services	$	347,488		$	324,577
	United States mechanical construction and facilities services	629,481			603,267
	United States building services	471,576			453,490
	United States industrial services	111,212			126,867
	Less intersegment revenues	(34,169		)	(25,871		)
	Total United States operations	1,525,588			1,482,330
	United Kingdom construction and facilities services	103,479			123,912
	Total worldwide operations	$	1,629,067		$	1,606,242
		For the nine months ended
		September 30,
		2013			2012
	Revenues from unrelated entities:
	United States electrical construction and facilities services	$	984,443		$	905,343
	United States mechanical construction and facilities services	1,741,483			1,794,268
	United States building services	1,361,392			1,341,940
	United States industrial services	335,358			288,605
	Total United States operations	4,422,676			4,330,156
	United Kingdom construction and facilities services	331,545			404,642
	Total worldwide operations	$	4,754,221		$	4,734,798
	Total revenues:
	United States electrical construction and facilities services	$	1,000,598		$	924,938
	United States mechanical construction and facilities services	1,780,112			1,812,683
	United States building services	1,395,607			1,361,725
	United States industrial services	337,282			290,369
	Less intersegment revenues	(90,923		)	(59,559		)
	Total United States operations	4,422,676			4,330,156
	United Kingdom construction and facilities services	331,545			404,642
	Total worldwide operations	$	4,754,221		$	4,734,798
		For the three months ended September 30,
		2013			2012
	Operating income (loss):
	United States electrical construction and facilities services	$	23,971		$	22,146
	United States mechanical construction and facilities services	27,421			30,359
	United States building services	23,285			17,690
	United States industrial services	307			11,129
	Total United States operations	74,984			81,324
	United Kingdom construction and facilities services	1,136			1,646
	Corporate administration	(19,532		)	(14,199		)
	Restructuring expenses	(2,466		)	(145		)
	Total worldwide operations	54,122			68,626
	Other corporate items:
	Interest expense	(2,352		)	(1,807		)
	Interest income	235			381
	Income before income taxes	$	52,005		$	67,200
		For the nine months ended
		September 30,
		2013			2012
	Operating income (loss):
	United States electrical construction and facilities services	$	68,147		$	68,121
	United States mechanical construction and facilities services	56,809			82,688
United States building services	52,928			33,653
United States industrial services	26,319			22,617
Total United States operations	204,203			207,079
United Kingdom construction and facilities services	(2,122		)	9,090
Corporate administration	(50,953		)	(44,920		)
Restructuring expenses	(9,642		)	(145		)
Total worldwide operations	141,486			171,104
Other corporate items:
Interest expense	(5,978		)	(5,460		)
Interest income	862			1,165
Income before income taxes	$	136,370		$	166,809
	September 30,			December 31,
	2013			2012
Total assets:
United States electrical construction and facilities services	$	338,483		$	283,997
United States mechanical construction and facilities services	802,528			785,286
United States building services	793,401			841,938
United States industrial services	913,647			358,350
Total United States operations	2,848,059			2,269,571
United Kingdom construction and facilities services	183,172			214,455
Corporate administration	475,528			623,044
Total worldwide operations	$	3,506,759		$	3,107,070
Included in our corporate administration operating loss for the nine months ended September 30, 2013 is the receipt of an insurance recovery of approximately $2.6 million that was received in January 2013 and is associated with a previously disposed of operation, which is classified as a component of "Cost of sales" on the Condensed Consolidated Statements of Operations. Additionally, included in our corporate administration operating losses for the three and nine months ended September 30, 2013 are $4.7 million and $6.1 million, respectively, of transaction costs associated with the RSI acquisition.

Fair_Value_Measurements_Policy

Fair Value Measurements (Policy)	9 Months Ended
	Sep. 30, 2013
Fair Value Disclosures [Abstract]
Fair Value Measurements	We use a fair value hierarchy that prioritizes the inputs to valuation techniques used to measure fair value. The hierarchy, which gives the highest priority to quoted prices in active markets, is comprised of the following three levels:
	Level 1 – Unadjusted quoted market prices in active markets for identical assets and liabilities.
	Level 2 – Observable inputs, other than Level 1 inputs. Level 2 inputs would typically include quoted prices in markets that are not active or financial instruments for which all significant inputs are observable, either directly or indirectly.
	Level 3 – Prices or valuations that require inputs that are both significant to the measurement and unobservable.

Earnings_Per_Share_Tables

Earnings Per Share (Tables)	9 Months Ended
	Sep. 30, 2013
Earnings Per Share [Abstract]
Calculation Of Basic And Diluted Earnings Per Common Share	The following tables summarize our calculation of Basic and Diluted Earnings per Common Share (“EPS”) for the three and nine months ended September 30, 2013 and 2012 (in thousands, except share and per share data):
		For the three months ended September 30,
		2013		2012
	Numerator:
	Net income attributable to EMCOR Group, Inc. common stockholders	$	26,690	$	39,581
	Denominator:
	Weighted average shares outstanding used to compute basic earnings per common share	67,174,848		66,568,318
	Effect of dilutive securities—Share-based awards	988,853		943,389
	Shares used to compute diluted earnings per common share	68,163,701		67,511,707
	Basic earnings per common share:
	Net income attributable to EMCOR Group, Inc. common stockholders	$	0.4	$	0.59
	Diluted earnings per share:
	Net income attributable to EMCOR Group, Inc. common stockholders	$	0.39	$	0.59
		For the nine months ended September 30,
		2013		2012
	Numerator:
	Net income attributable to EMCOR Group, Inc. common stockholders	$	77,871	$	100,174
	Denominator:
	Weighted average shares outstanding used to compute basic earnings per common share	67,127,149		66,667,681
	Effect of dilutive securities—Share-based awards	992,591		1,050,023
	Shares used to compute diluted earnings per common share	68,119,740		67,717,704
	Basic earnings per common share:
	Net income attributable to EMCOR Group, Inc. common stockholders	$	1.16	$	1.5
	Diluted earnings per share:
	Net income attributable to EMCOR Group, Inc. common stockholders	$	1.14	$	1.48

Inventories_Tables

Inventories (Tables)	9 Months Ended
	Sep. 30, 2013
Inventory Disclosure [Abstract]
Inventories	Inventories in the accompanying Condensed Consolidated Balance Sheets consisted of the following amounts (in thousands):
		September 30,		December 31,
		2013		2012
	Raw materials and construction materials	$	20,864	$	20,994
	Work in process	21,860		29,518
		$	42,724	$	50,512

Debt_Tables

Debt (Tables)	9 Months Ended
	Sep. 30, 2013
Debt Disclosure [Abstract]
Schedule Of Debt	Debt in the accompanying Condensed Consolidated Balance Sheets consisted of the following amounts (in thousands):
		September 30,		December 31,
		2013		2012
	2011 Revolving Credit Facility	$	400,000	$	150,000
	Capitalized lease obligations	5,065		5,881
	Other	12		18
		405,077		155,899
	Less: current maturities	1,882		1,787
		$	403,195	$	154,112

Fair_Value_Measurements_Tables

Fair Value Measurements (Tables)	9 Months Ended
	Sep. 30, 2013
Fair Value Disclosures [Abstract]
Schedule Of Assets And Liabilities Carried At Fair Value Measured On A Recurring Basis	The following tables provide the assets and liabilities carried at fair value measured on a recurring basis as of September 30, 2013 and December 31, 2012 (in thousands):
		Assets at Fair Value as of September 30, 2013
	Asset Category	Level 1		Level 2	Level 3	Total
	Cash and cash equivalents (1)	$	444,037	—	—	$	444,037
	Restricted cash (2)	7,058		—	—	7,058
	Short-term investments (2)	—		—	—	—
	Total	$	451,095	—	—	$	451,095
		Assets at Fair Value as of December 31, 2012
	Asset Category	Level 1		Level 2	Level 3	Total
	Cash and cash equivalents (1)	$	605,303	—	—	$	605,303
	Restricted cash (2)	6,281		—	—	6,281
	Short-term investments (2)	4,879		—	—	4,879
	Total	$	616,463	—	—	$	616,463
	_________
	-1	Cash and cash equivalents consist primarily of money market funds with original maturity dates of three months or less, which are Level 1 assets. At September 30, 2013 and December 31, 2012, we had $147.2 million and $407.4 million, respectively, in money market funds.
	-2	Restricted cash and short-term investments with original maturities greater than three months are classified as “Prepaid expenses and other” on our Condensed Consolidated Balance Sheets.

Retirement_Plans_Tables

Retirement Plans (Tables)	9 Months Ended
	Sep. 30, 2013
Compensation and Retirement Disclosure [Abstract]
Components Of Net Periodic Pension Cost	The components of net periodic pension cost of the UK Plan for the three and nine months ended September 30, 2013 and 2012 were as follows (in thousands):
		For the three months ended September 30,						For the nine months ended September 30,
		2013			2012			2013			2012
	Interest cost	$	3,044		$	3,102		$	9,147		$	9,323
	Expected return on plan assets	(3,549		)	(3,251		)	(10,664		)	(9,772		)
	Amortization of unrecognized loss	633			606			1,902			1,823
	Net periodic pension cost	$	128		$	457		$	385		$	1,374

Segment_Information_Tables

Segment Information (Tables)	9 Months Ended
	Sep. 30, 2013
Segment Reporting [Abstract]
Information About Industry Segments And Geographic Areas	The following tables have been restated in all periods presented to reflect our new reportable segments (see Note 1, "Basis of Presentation" for further information) and represent information about industry segments and geographic areas for the three and nine months ended September 30, 2013 and 2012 (in thousands):
		For the three months ended September 30,
		2013			2012
	Revenues from unrelated entities:
	United States electrical construction and facilities services	$	340,529		$	318,960
	United States mechanical construction and facilities services	616,403			593,448
	United States building services	457,777			444,510
	United States industrial services	110,879			125,412
	Total United States operations	1,525,588			1,482,330
	United Kingdom construction and facilities services	103,479			123,912
	Total worldwide operations	$	1,629,067		$	1,606,242
	Total revenues:
	United States electrical construction and facilities services	$	347,488		$	324,577
	United States mechanical construction and facilities services	629,481			603,267
	United States building services	471,576			453,490
	United States industrial services	111,212			126,867
	Less intersegment revenues	(34,169		)	(25,871		)
	Total United States operations	1,525,588			1,482,330
	United Kingdom construction and facilities services	103,479			123,912
	Total worldwide operations	$	1,629,067		$	1,606,242
		For the nine months ended
		September 30,
		2013			2012
	Revenues from unrelated entities:
	United States electrical construction and facilities services	$	984,443		$	905,343
	United States mechanical construction and facilities services	1,741,483			1,794,268
	United States building services	1,361,392			1,341,940
	United States industrial services	335,358			288,605
	Total United States operations	4,422,676			4,330,156
	United Kingdom construction and facilities services	331,545			404,642
	Total worldwide operations	$	4,754,221		$	4,734,798
	Total revenues:
	United States electrical construction and facilities services	$	1,000,598		$	924,938
	United States mechanical construction and facilities services	1,780,112			1,812,683
	United States building services	1,395,607			1,361,725
	United States industrial services	337,282			290,369
	Less intersegment revenues	(90,923		)	(59,559		)
	Total United States operations	4,422,676			4,330,156
	United Kingdom construction and facilities services	331,545			404,642
	Total worldwide operations	$	4,754,221		$	4,734,798
		For the three months ended September 30,
		2013			2012
	Operating income (loss):
	United States electrical construction and facilities services	$	23,971		$	22,146
	United States mechanical construction and facilities services	27,421			30,359
	United States building services	23,285			17,690
	United States industrial services	307			11,129
	Total United States operations	74,984			81,324
	United Kingdom construction and facilities services	1,136			1,646
	Corporate administration	(19,532		)	(14,199		)
	Restructuring expenses	(2,466		)	(145		)
	Total worldwide operations	54,122			68,626
	Other corporate items:
	Interest expense	(2,352		)	(1,807		)
	Interest income	235			381
	Income before income taxes	$	52,005		$	67,200
		For the nine months ended
		September 30,
		2013			2012
	Operating income (loss):
	United States electrical construction and facilities services	$	68,147		$	68,121
	United States mechanical construction and facilities services	56,809			82,688
	United States building services	52,928			33,653
	United States industrial services	26,319			22,617
Total United States operations	204,203			207,079
United Kingdom construction and facilities services	(2,122		)	9,090
Corporate administration	(50,953		)	(44,920		)
Restructuring expenses	(9,642		)	(145		)
Total worldwide operations	141,486			171,104
Other corporate items:
Interest expense	(5,978		)	(5,460		)
Interest income	862			1,165
Income before income taxes	$	136,370		$	166,809
	September 30,			December 31,
	2013			2012
Total assets:
United States electrical construction and facilities services	$	338,483		$	283,997
United States mechanical construction and facilities services	802,528			785,286
United States building services	793,401			841,938
United States industrial services	913,647			358,350
Total United States operations	2,848,059			2,269,571
United Kingdom construction and facilities services	183,172			214,455
Corporate administration	475,528			623,044
Total worldwide operations	$	3,506,759		$	3,107,070

Acquisitions_Of_Businesses_Det

Acquisitions Of Businesses (Details) (USD $)	0 Months Ended		1 Months Ended	3 Months Ended		9 Months Ended
	Jul. 29, 2013	Jan. 04, 2012	31-May-13	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012
	Company	Company	Company
Business Acquisition [Line Items]
Business acquisition date		4-Jan-12	31-May-13
Proceeds from revolving credit facility						$250,000,000	$0
Goodwill				829,316,000		829,316,000		566,588,000
Number of businesses acquired	1	1	1
Non-cash income (expense) from contingent consideration arrangements				3,100,000	3,000,000	6,000,000	3,000,000
RepconStrickland [Member]
Business Acquisition [Line Items]
Business acquisition date	29-Jul-13
Business acquisition, percentage of voting interests acquired	100.00%
Purchase price	460,700,000
Proceeds from revolving credit facility	250,000,000
Working capital acquired	37,400,000
Other net liabilities acquired	66,400,000
Goodwill	262,300,000
Identifiable intangible assets	227,400,000

Earnings_Per_Share_Details

Earnings Per Share (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, except Share data, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Earnings Per Share [Abstract]
Net income attributable to EMCOR Group, Inc. common stockholders	$26,690	$39,581	$77,871	$100,174
Weighted average shares outstanding used to compute basic earnings per common share (in shares)	67,174,848	66,568,318	67,127,149	66,667,681
Effect of dilutive securities-Share-based awards (in shares)	988,853	943,389	992,591	1,050,023
Shares used to compute diluted earnings per common share (in shares)	68,163,701	67,511,707	68,119,740	67,717,704
Net income attributable to EMCOR Group, Inc. common stockholders (in US dollars per share)	$0.40	$0.59	$1.16	$1.50
Net income attributable to EMCOR Group, Inc. common stockholders (in US dollars per share)	$0.39	$0.59	$1.14	$1.48
Anti-dilutive stock options excluded from calculation of diluted earnings per share (in shares)	0	140,096	0	140,096

Inventories_Inventories_Detail

Inventories (Inventories) (Details) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Inventory Disclosure [Abstract]
Raw materials and construction materials	$20,864	$20,994
Work in process	21,860	29,518
Inventories	$42,724	$50,512

Debt_Narrative_Details

Debt (Narrative) (Details) (USD $)

9 Months Ended

9 Months Ended

9 Months Ended

9 Months Ended

9 Months Ended

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2011

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

2011 Revolving Credit Facility [Member]

2011 Revolving Credit Facility [Member]

Minimum [Member]

Maximum [Member]

Prime Rate [Member]

Prime Rate [Member]

Prime Rate [Member]

London Interbank Offered Rate (LIBOR) [Member]

London Interbank Offered Rate (LIBOR) [Member]

London Interbank Offered Rate (LIBOR) [Member]

2011 Revolving Credit Facility [Member]

2011 Revolving Credit Facility [Member]

2011 Revolving Credit Facility [Member]

Minimum [Member]

Maximum [Member]

2011 Revolving Credit Facility [Member]

Minimum [Member]

Maximum [Member]

2011 Revolving Credit Facility [Member]

2011 Revolving Credit Facility [Member]

2011 Revolving Credit Facility [Member]

2011 Revolving Credit Facility [Member]

Line of Credit Facility [Line Items]

Line of credit facility maximum borrowing capacity

$750,000,000

Increase in borrowing capacity

900,000,000

Expiration date of revolving credit facility

21-Nov-16

Letters of credit maximum borrowing capacity

250,000,000

Letters of credit outstanding

78,900,000

84,000,000

Commitment fee percentage of unused amount

0.25%

0.25%

0.35%

Interest rate description

Borrowings under the 2011 Revolving Credit Facility bear interest at (1)B a rate which is the prime commercial lending rate announced by Bank of Montreal from time to time (3.25% at September 30, 2013) plus 0.50% to 1.00%, based on certain financial tests or (2)B United States dollar LIBOR (0.18% at September 30, 2013) plus 1.50% to 2.00%, based on certain financial tests. The interest rate in effect at September 30, 2013 was 1.68%. Letters of credit fees issued under this facility range from 1.50% to 2.00% of the respective face amounts of the letters of credit issued and are computed based on certain financial tests.

Lending rate

3.25%

0.18%

Basis spread on variable rate

0.50%

1.00%

1.50%

2.00%

Letter of credit fees

1.50%

2.00%

Interest rate

1.68%

Debt issuance costs, capitalized

4,200,000

Borrowings under revolving credit facility

$400,000,000

$150,000,000

Debt_Schedule_Of_Debt_Details

Debt (Schedule Of Debt) (Details) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Debt Instrument [Line Items]
2011 Revolving Credit Facility	$400,000	$150,000
Capitalized lease obligations	5,065	5,881
Other	12	18
Total debt	405,077	155,899
Less: current maturities	1,882	1,787
Total long-term debt	403,195	154,112
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
2011 Revolving Credit Facility	$400,000	$150,000

Fair_Value_Measurements_Schedu

Fair Value Measurements (Schedule Of Assets And Liabilities Carried At Fair Value Measured On A Recurring Basis) (Details) (Fair Value, Measurements, Recurring [Member], USD $)	Sep. 30, 2013		Dec. 31, 2012
In Thousands, unless otherwise specified
Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	$444,037	[1]	$605,303	[1]
Restricted cash	7,058	[2]	6,281	[2]
Short-term investments	0	[2]	4,879	[2]
Total	451,095		616,463
Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	0	[1]	0	[1]
Restricted cash	0	[2]	0	[2]
Short-term investments	0	[2]	0	[2]
Total	0		0
Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	0	[1]	0	[1]
Restricted cash	0	[2]	0	[2]
Short-term investments	0	[2]	0	[2]
Total	0		0
Portion at Fair Value Measurement [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	444,037	[1]	605,303	[1]
Restricted cash	7,058	[2]	6,281	[2]
Short-term investments	0	[2]	4,879	[2]
Total	451,095		616,463
Money Market Funds [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	$147,200		$407,400
[1]	Cash and cash equivalents consist primarily of money market funds with original maturity dates of three months or less, which are Level 1 assets. At SeptemberB 30, 2013 and DecemberB 31, 2012, we had $147.2 million and $407.4 million, respectively, in money market funds.
[2]	Restricted cash and short-term investments with original maturities greater than three months are classified as bPrepaid expenses and otherb on our Condensed Consolidated Balance Sheets.

Income_Taxes_Details

Income Taxes (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012
Income Tax Disclosure [Abstract]
Income tax provision	$23,112,000	$26,890,000	$55,285,000	$64,711,000
Effective income tax rates	40.80%	37.60%	39.90%	38.00%
Actual income tax rates	46.40%	40.50%	41.50%	39.20%
Unrecognized income tax benefits	11,300,000		11,300,000		11,300,000
Unrecognized income tax benefits, if recognized, that would favorably affect the effective income tax rate	6,600,000		6,600,000		6,600,000
Accrued interest expense related to unrecognized income tax benefits	3,200,000		3,200,000		2,600,000
Interest expense related to unrecognized income tax benefits recognized	200,000	100,000	600,000	200,000
Unrecognized income tax benefits to be recognized in the next twelve months	$5,000,000		$5,000,000

Common_Stock_Details

Common Stock (Details) (USD $)	0 Months Ended	3 Months Ended		9 Months Ended		33 Months Ended
	Sep. 26, 2011	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Dec. 31, 2012
Stockholders' Equity Note [Abstract]
Common stock, outstanding		67,125,653		67,125,653		67,125,653	66,964,162
Common stock, issued		28,493	83,875	243,690	502,515
Stock repurchase, authorized amount (in US dollars)	$100,000,000
Number of shares repurchased				100,000		2,200,000
Stock repurchased (in US dollars)				4,998,000	23,912,000	56,400,000
Remaining authorized repurchase amount (in US dollars)				$43,600,000

Retirement_Plans_Narrative_Det

Retirement Plans (Narrative) (Details) (United Kingdom Subsidiary [Member], Foreign Pension Plans, Defined Benefit [Member], USD $)	9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2013
United Kingdom Subsidiary [Member] | Foreign Pension Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Contribution of U.K. subsidiary to its defined benefit pension plan	$4.20
Anticipated additional contribution	$1.50

Retirement_Plans_Components_Of

Retirement Plans (Components Of Net Periodic Pension Benefit Cost) (Details) (United Kingdom Subsidiary [Member], Foreign Pension Plans, Defined Benefit [Member], USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
United Kingdom Subsidiary [Member] | Foreign Pension Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Interest cost	$3,044	$3,102	$9,147	$9,323
Expected return on plan assets	-3,549	-3,251	-10,664	-9,772
Amortization of unrecognized loss	633	606	1,902	1,823
Net periodic pension cost	$128	$457	$385	$1,374

Commitments_and_Contingencies_

Commitments and Contingencies Narrative (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Loss Contingencies [Line Items]
Restructuring expenses	$2,466,000	$145,000	$9,642,000	$145,000
Restructuring reserve	4,700,000		4,700,000
Restructuring expenses, additional expected to be incurred			3,300,000
Employee Severance [Member]
Loss Contingencies [Line Items]
Restructuring expenses	1,900,000		8,400,000
Facility Closing [Member]
Loss Contingencies [Line Items]
Restructuring expenses	$600,000		$1,200,000

Segment_Information_Informatio

Segment Information (Information About Industry Segments And Geographic Areas) (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012
Segment Reporting Information [Line Items]
Revenues from unrelated entities	$1,629,067,000	$1,606,242,000	$4,754,221,000	$4,734,798,000
Total revenues	1,629,067,000	1,606,242,000	4,754,221,000	4,734,798,000
Operating income (loss)	54,122,000	68,626,000	141,486,000	171,104,000
Restructuring expenses	-2,466,000	-145,000	-9,642,000	-145,000
Interest expense	-2,352,000	-1,807,000	-5,978,000	-5,460,000
Interest income	235,000	381,000	862,000	1,165,000
Income before income taxes	52,005,000	67,200,000	136,370,000	166,809,000
Total assets	3,506,759,000		3,506,759,000		3,107,070,000
Insurance recoveries			2,600,000
Transaction costs	4,700,000		6,100,000
Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Total revenues	-34,169,000	-25,871,000	-90,923,000	-59,559,000
Corporate, Non-Segment [Member]
Segment Reporting Information [Line Items]
Operating income (loss)	-19,532,000	-14,199,000	-50,953,000	-44,920,000
Total assets	475,528,000		475,528,000		623,044,000
UNITED STATES
Segment Reporting Information [Line Items]
Revenues from unrelated entities	1,525,588,000	1,482,330,000	4,422,676,000	4,330,156,000
Total revenues	1,525,588,000	1,482,330,000	4,422,676,000	4,330,156,000
Operating income (loss)	74,984,000	81,324,000	204,203,000	207,079,000
Total assets	2,848,059,000		2,848,059,000		2,269,571,000
UNITED STATES | United States Electrical Construction And Facilities Services [Member]
Segment Reporting Information [Line Items]
Revenues from unrelated entities	340,529,000	318,960,000	984,443,000	905,343,000
UNITED STATES | United States Mechanical Construction And Facilities Services [Member]
Segment Reporting Information [Line Items]
Revenues from unrelated entities	616,403,000	593,448,000	1,741,483,000	1,794,268,000
UNITED STATES | United States Building Services [Member]
Segment Reporting Information [Line Items]
Revenues from unrelated entities	457,777,000	444,510,000	1,361,392,000	1,341,940,000
UNITED STATES | United States Industrial Services [Member]
Segment Reporting Information [Line Items]
Revenues from unrelated entities	110,879,000	125,412,000	335,358,000	288,605,000
UNITED STATES | Operating Segments [Member] | United States Electrical Construction And Facilities Services [Member]
Segment Reporting Information [Line Items]
Total revenues	347,488,000	324,577,000	1,000,598,000	924,938,000
Operating income (loss)	23,971,000	22,146,000	68,147,000	68,121,000
Total assets	338,483,000		338,483,000		283,997,000
UNITED STATES | Operating Segments [Member] | United States Mechanical Construction And Facilities Services [Member]
Segment Reporting Information [Line Items]
Total revenues	629,481,000	603,267,000	1,780,112,000	1,812,683,000
Operating income (loss)	27,421,000	30,359,000	56,809,000	82,688,000
Total assets	802,528,000		802,528,000		785,286,000
UNITED STATES | Operating Segments [Member] | United States Building Services [Member]
Segment Reporting Information [Line Items]
Total revenues	471,576,000	453,490,000	1,395,607,000	1,361,725,000
Operating income (loss)	23,285,000	17,690,000	52,928,000	33,653,000
Total assets	793,401,000		793,401,000		841,938,000
UNITED STATES | Operating Segments [Member] | United States Industrial Services [Member]
Segment Reporting Information [Line Items]
Total revenues	111,212,000	126,867,000	337,282,000	290,369,000
Operating income (loss)	307,000	11,129,000	26,319,000	22,617,000
Total assets	913,647,000		913,647,000		358,350,000
UNITED KINGDOM | United Kingdom Construction And Facilities Services [Member]
Segment Reporting Information [Line Items]
Revenues from unrelated entities	103,479,000	123,912,000	331,545,000	404,642,000
UNITED KINGDOM | Operating Segments [Member] | United Kingdom Construction And Facilities Services [Member]
Segment Reporting Information [Line Items]
Total revenues	103,479,000	123,912,000	331,545,000	404,642,000
Operating income (loss)	1,136,000	1,646,000	-2,122,000	9,090,000
Total assets	$183,172,000		$183,172,000		$214,455,000