Condensed Consolidating Balance Sheets (Detail) (USD $) In Thousands	Jun. 30, 2011	Dec. 31, 2010	Jun. 30, 2010	Dec. 31, 2009
Current assets:
Cash and cash equivalents	$ 118,962	$ 245,935	$ 228,708	$ 129,846
Accounts receivable, net	411,423	459,952
Inventories	39,219	41,987
Prepaid expenses and other (including intercompany)	62,622	38,657
Total current assets	632,226	786,531
Property, plant and equipment, net	162,399	175,567
Goodwill and other intangible assets, net	863,977	870,288
Investments	3,064	3,146
Other assets	14,509	10,126
Total assets	1,676,175	1,845,658
Current liabilities:
Current portion, long-term debt	15,000	7,058
Accounts payable and intercompany payable	320,193	329,602
Progress billings	44,615	53,001
Accrued expenses	85,589	99,612
Total current liabilities	465,397	489,273
Long-term debt	595,060	699,169
Deferred income taxes	80,003	78,764
Other non-current liabilities	45,830	49,568
Total liabilities	1,186,290	1,316,774
Stockholders' equity	489,885	528,884
Total liabilities and stockholders' equity	1,676,175	1,845,658
Parent Company
Current assets:
Cash and cash equivalents	84,913	211,933	204,161	104,477
Accounts receivable, net	114,688	175,115
Inventories	30,941	33,305
Prepaid expenses and other (including intercompany)	1,008,120	278,489
Total current assets	1,238,662	698,842
Property, plant and equipment, net	26,154	31,475
Goodwill and other intangible assets, net	42,735	42,745
Investments	399,493	400,404
Intercompany note receivable (payable)	(73,639)	479,365
Other assets	10,478	6,982
Total assets	1,643,883	1,659,813
Current liabilities:
Current portion, long-term debt	15,000	7,058
Accounts payable and intercompany payable	464,676	323,277
Progress billings	14,800	26,353
Accrued expenses	42,876	51,035
Total current liabilities	537,352	407,723
Long-term debt	595,060	699,169
Deferred income taxes	(3,616)	(4,044)
Other non-current liabilities	25,202	28,081
Total liabilities	1,153,998	1,130,929
Stockholders' equity	489,885	528,884
Total liabilities and stockholders' equity	1,643,883	1,659,813
Guarantor Subsidiaries
Current assets:
Cash and cash equivalents	5,480	8,026	801	7,614
Accounts receivable, net	273,820	259,001
Inventories	8,275	8,679
Prepaid expenses and other (including intercompany)	1,047,338	630,972
Total current assets	1,334,913	906,678
Property, plant and equipment, net	134,415	142,006
Goodwill and other intangible assets, net	814,253	820,554
Investments	21,137	12,486
Intercompany note receivable (payable)	86,187	(460,369)
Other assets	2,948	3,130
Total assets	2,393,853	1,424,485
Current liabilities:
Accounts payable and intercompany payable	1,840,636	866,614
Progress billings	14,170	11,751
Accrued expenses	35,601	41,300
Total current liabilities	1,890,407	919,665
Deferred income taxes	87,614	86,804
Other non-current liabilities	18,377	19,575
Total liabilities	1,996,398	1,026,044
Stockholders' equity	397,455	398,441
Total liabilities and stockholders' equity	2,393,853	1,424,485
Non-Guarantor Subsidiaries
Current assets:
Cash and cash equivalents	28,569	25,976	23,746	17,755
Accounts receivable, net	22,915	25,836
Inventories	3	3
Prepaid expenses and other (including intercompany)	1,712	2,083
Total current assets	53,199	53,898
Property, plant and equipment, net	1,830	2,086
Goodwill and other intangible assets, net	6,989	6,989
Intercompany note receivable (payable)	(12,548)	(18,996)
Other assets	1,083	14
Total assets	50,553	43,991
Current liabilities:
Accounts payable and intercompany payable	9,429	12,598
Progress billings	15,645	14,897
Accrued expenses	7,112	7,277
Total current liabilities	32,186	34,772
Deferred income taxes	(3,995)	(3,996)
Other non-current liabilities	2,251	1,912
Total liabilities	30,442	32,688
Stockholders' equity	20,111	11,303
Total liabilities and stockholders' equity	50,553	43,991
Consolidating Adjustments
Current assets:
Prepaid expenses and other (including intercompany)	(1,994,548)	(872,887)
Total current assets	(1,994,548)	(872,887)
Investments	(417,566)	(409,744)
Total assets	(2,412,114)	(1,282,631)
Current liabilities:
Accounts payable and intercompany payable	(1,994,548)	(872,887)
Total current liabilities	(1,994,548)	(872,887)
Total liabilities	(1,994,548)	(872,887)
Stockholders' equity	(417,566)	(409,744)
Total liabilities and stockholders' equity	$ (2,412,114)	$ (1,282,631)