CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2012		Sep. 30, 2011
Cash Flows From Operating Activities:
Net income	$ 173,644		$ 162,104
Less: Income from discontinued operations, net of tax	3,497		6,459
Income from continuing operations	170,147		155,645
Non-cash items included in net income:
Depreciation and amortization	65,956		59,900
Equity in (income) loss of unconsolidated affiliates	11,026		(59)
Gain on asset disposals and impairments-net	(282)		(8,107)
Provision (benefit) from deferred taxes	3,929		(2,910)
Stock-based compensation charges	11,449		8,340
Pension costs	1,152		15,367
Other non-cash items	5,178		5,909
Changes in assets and liabilities, net of effects from dispositions:
Accounts receivable	(113,460)		26,238
Net contracts in progress and advance billings on contracts	(225,340)		(380,635)
Accounts payable	58,675		44,667
Accrued and other current liabilities	66,125		71,148
Pension liability and accrued postretirement and employee benefits	17,322		(51,041)
Other assets and liabilities	16,166		(33,663)
Net Cash Provided By (Used In) Operating Activities-Continuing Operations	109,649		(70,865)
Net Cash Used In Operating Activities-Discontinued Operations			(211)
Total Cash Provided By (Used In) Operating Activities	109,649		(71,076)
Cash Flows From Investing Activities:
Purchases of property, plant and equipment	(179,284)	[1]	(231,872)	[1]
(Increase) decrease in restricted cash and cash equivalents	(1,112)		183,564
Purchases of available-for-sale securities	(82,735)		(516,628)
Sales and maturities of available-for-sale securities	164,807		601,128
Proceeds from asset disposals	405		8,483
Other investing activities, net	(2,305)		(16)
Net Cash Provided By (Used In) Investing Activities-Continuing Operations	(100,224)		44,659
Net Cash Provided By Investing Activities-Discontinued Operations	60,671
Total Cash Provided By (Used In) Investing Activities	(39,553)		44,659
Cash Flows From Financing Activities:
Increase in debt	19,033		40,212
Payment of debt	(4,482)		(6,473)
Debt issuance costs	64		(4,824)
Distributions to noncontrolling interests	(15,728)
Other financing activities, net	(2,706)		(2,059)
Net Cash Provided By (Used In) Financing Activities-Continuing Operations	(3,819)		26,856
Effects of exchange rate changes on cash and cash equivalents	1,663		(313)
Net increase in cash and cash equivalents	67,940		126
Cash and cash equivalents at beginning of period	570,854		403,463
Cash and cash equivalents at end of period-Continuing Operations	638,794		403,589
Cash paid during the period for:
Income taxes (net of refunds)	58,157		45,932
Drydock
Non-cash items included in net income:
Depreciation and amortization	$ 21,606		$ 18,336

[1] Total capital expenditures exclude accrued capital expenditures, of approximately $1.2 million and $9.5 million for the nine months ended September 30, 2012 and 2011, respectively.