CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2012		Mar. 31, 2011
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 65,424		$ 74,427
Less: Income from discontinued operations, net of tax	3,497		1,662
Income from continuing operations	61,927		72,765
Non-cash items included in net income:
Depreciation and amortization	23,276		20,525
Equity in (income) loss of unconsolidated affiliates	3,683		(3,427)
Gain on asset disposals	(226)		(225)
Benefit for deferred taxes	(4,131)		(6,929)
Pension costs	579		6,153
Other non-cash items	3,224		4,368
Changes in assets and liabilities, net of effects from dispositions:
Accounts receivable	50,017		17,045
Net contracts in progress and advance billings on contracts	65,363		(244,062)
Accounts payable	(55,292)		23,947
Accrued and other current liabilities	(10,040)		39,311
Pension liability and accrued postretirement and employee benefits	7,489		(41,546)
Other assets and liabilities	26,992		20,038
NET CASH PROVIDED BY (USED IN) OPERATING ACTIVITIES-CONTINUING OPERATIONS	172,861		(92,037)
NET CASH PROVIDED BY OPERATING ACTIVITIES-DISCONTINUED OPERATIONS			114
TOTAL CASH PROVIDED BY (USED IN) OPERATING ACTIVITIES	172,861		(91,923)
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchases of property, plant and equipment	(44,751)	[1]	(63,986)	[1]
Increase in restricted cash and cash equivalents	(2,870)		(8,493)
Purchases of available-for-sale securities	(40,319)		(298,169)
Sales and maturities of available-for-sale securities	94,380		258,361
Other investing activities	(2,150)		218
NET CASH PROVIDED BY (USED IN) INVESTING ACTIVITIES-CONTINUING OPERATIONS	4,290		(112,069)
NET CASH PROVIDED BY INVESTING ACTIVITIES-DISCONTINUED OPERATIONS	60,671
TOTAL CASH PROVIDED BY (USED IN) INVESTING ACTIVITIES	64,961		(112,069)
CASH FLOWS FROM FINANCING ACTIVITIES:
Increase in debt			11,837
Payment of debt	(1,494)		(2,158)
Distributions to noncontrolling interests	(15,733)
Other financing activities	(1,784)		57
NET CASH PROVIDED BY (USED IN) FINANCING ACTIVITIES-CONTINUING OPERATIONS	(19,011)		9,736
EFFECTS OF EXCHANGE RATE CHANGES ON CASH	(700)
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	218,111		(194,256)
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD	570,854		403,463
CASH AND CASH EQUIVALENTS AT END OF PERIOD-CONTINUING OPERATIONS	788,965		209,207
Cash paid during the period for:
Income taxes (net of refunds)	$ 16,036		$ 3,574

[1] Total capital expenditures exclude approximately $13 million and $4 million in accrued capital expenditures for the three months ended March 31, 2012 and 2011, respectively.