CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income (loss)	$ (49,417)	$ 24,318
Non-cash items included in net income (loss):
Depreciation and amortization	24,602	20,222
Drydock amortization	6,946	5,550
Restructuring charges	675
Equity in (earnings) loss of unconsolidated affiliates	(1,123)	4,131
Gain on asset disposals	(6,439)	(14,716)
Benefit for deferred taxes	(2,628)	5,332
Stock-based compensation charges	4,387	3,923
Net periodic pension benefit cost	2,854	642
Other non-cash items	2,331	1,749
Changes in assets and liabilities, net of effects from acquisitions and dispositions:
Accounts receivable	26,365	(6,573)
Net contracts in progress and advance billings on contracts	(5,974)	(19,935)
Accounts payable	32,727	(125,234)
Accrued and other current liabilities	15,046	(20,774)
Pension liability and accrued postretirement and employee benefits	5,880	(19,657)
Other assets and liabilities	(78,560)	(46,093)
TOTAL CASH USED IN OPERATING ACTIVITIES	(22,328)	(187,115)
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchases of property, plant and equipment	(37,893)	(37,649)
Increase in restricted cash and cash equivalents	(19,634)	(3,826)
Purchases of available-for-sale securities	(1,997)	(3,744)
Sales and maturities of available-for-sale securities	10,055	31,193
Proceeds from the sale and disposal of assets	8,370	35,621
Other investing activities	(1,950)	(4,596)
TOTAL CASH (USED IN) PROVIDED BY INVESTING ACTIVITIES	(43,049)	16,999
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from short term debt	250,000
Payment of debt	(31,373)	(1,494)
Distributions to noncontrolling interests	(502)	(6,200)
Debt issuance cost and other financing activities	(3,356)	(1,015)
TOTAL CASH PROVIDED BY (USED IN) FINANCING ACTIVITIES	214,769	(8,709)
EFFECTS OF EXCHANGE RATE CHANGES ON CASH	36	213
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	149,428	(178,612)
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD	118,702	640,147
CASH AND CASH EQUIVALENTS AT END OF PERIOD	268,130	461,535
Cash paid during the period for:
Income taxes (net of refunds)	$ 11,668	$ 25,916