CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2012		Jun. 30, 2011
Cash Flows From Operating Activities:
Net income	$ 119,353		$ 145,863
Less: Income from discontinued operations, net of tax	3,497		5,272
Income from continuing operations	115,856		140,591
Non-cash items included in net income:
Depreciation and amortization	45,874		40,099
Equity in (income) loss of unconsolidated affiliates	6,334		(1,551)
Gain on asset disposals and impairments-net	(197)		(296)
Provision (benefit) from deferred taxes	1,194		(11,648)
Pension costs	768		11,588
Other non-cash items	10,090		10,369
Changes in assets and liabilities, net of effects from dispositions:
Accounts receivable	36,237		(54,481)
Net contracts in progress and advance billings on contracts	(150,712)		(257,381)
Accounts payable	4,074		27,589
Accrued and other current liabilities	10,145		40,505
Pension liability and accrued postretirement and employee benefits	15,426		(42,067)
Other assets and liabilities	(3,902)		24,907
Net Cash Provided By (Used In) Operating Activities-Continuing Operations	91,187		(71,776)
Net Cash Provided By Operating Activities-Discontinued Operations			62
Total Cash Provided By (Used In) Operating Activities	91,187		(71,714)
Cash Flows From Investing Activities:
Purchases of property, plant and equipment	(131,661)	[1]	(141,682)	[1]
(Increase) decrease in restricted cash and cash equivalents	(2,062)		39,950
Purchases of available-for-sale securities	(66,266)		(377,018)
Sales and maturities of available-for-sale securities	125,895		424,452
Other investing activities, net	(2,071)		303
Net Cash Used In Investing Activities-Continuing Operations	(76,165)		(53,995)
Net Cash Provided By Investing Activities-Discontinued Operations	60,671
Total Cash Used In Investing Activities	(15,494)		(53,995)
Cash Flows From Financing Activities:
Increase in debt	19,033		30,745
Payment of debt	(2,988)		(4,288)
Distributions to noncontrolling interests	(15,726)
Other financing activities, net	(2,638)		(2,361)
Net Cash Provided By (Used In) Financing Activities-Continuing Operations	(2,319)		24,096
Effects of exchange rate changes on cash and cash equivalents	(168)		45
Net increase (decrease) in cash and cash equivalents	73,206		(101,568)
Cash and cash equivalents at beginning of period	570,854		403,463
Cash and cash equivalents at end of period-Continuing Operations	644,060		301,895
Cash paid during the period for:
Income taxes (net of refunds)	$ 47,403		$ 25,534

[1] Total capital expenditures exclude approximately $1.3 million and $6.9 million in accrued capital expenditures for the six months ended June 30, 2012 and 2011, respectively.