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CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Cash flows from operating activities:      
Net income (loss) $ 155,742 $ (37,169) $ (339,618)
Adjustments to reconcile net income (loss) to cash provided by operating activities:      
Depreciation and amortization 327,505 346,177 352,793
Long-lived asset impairment 28,637 136,614 6,068
Goodwill impairment     196,807
Amortization of deferred financing costs 7,690 7,243 8,977
(Income) loss from discontinued operations, net of tax (64,014) (35,976) 8,044
Amortization of debt discount 23,407 20,523 18,323
Provision for doubtful accounts 2,859 8,754 1,488
Gain on sale of property, plant and equipment (27,433) (4,677) (8,063)
Equity in (income) loss of non-consolidated affiliates (19,000) (51,483) 471
Amortization of terminated interest rate swaps 4,174 10,688 20,267
Interest rate swaps 334    
Loss on remeasurement of intercompany balances 4,313 7,406 14,174
Stock-based compensation expense 16,248 15,381 20,018
Deferred income tax provision 21,862 (77,264) (51,323)
Changes in assets and liabilities, net of acquisition:      
Accounts receivable and notes (31,384) (11,531) (54,961)
Inventory (27,269) (34,800) 27,219
Costs and estimated earnings versus billings on uncompleted contracts (36,539) 44,359 (21,601)
Other current assets 33,149 9,452 (16,350)
Accounts payable and other liabilities (34,143) 30,067 35,212
Deferred revenue (16,426) 5,288 (77,321)
Other (21,044) (5,790) (36,515)
Net cash provided by continuing operations 348,668 383,262 104,109
Net cash provided by discontinued operations 7,036 6,663 16,334
Net cash provided by operating activities 355,704 389,925 120,443
Cash flows from investing activities:      
Capital expenditures (391,725) (428,731) (272,150)
Proceeds from sale of property, plant and equipment 101,311 35,989 43,042
Cash paid for business acquisition     (3,000)
Return of investments in non-consolidated affiliates 19,000 51,707  
(Increase) decrease in restricted cash 14 (162) 820
Cash invested in non-consolidated affiliates   (224) (471)
Net cash used in continuing operations (271,400) (341,421) (231,759)
Net cash provided by (used in) discontinued operations 74,949 135,970 (7,425)
Net cash used in investing activities (196,451) (205,451) (239,184)
Cash flows from financing activities:      
Proceeds from borrowings of long-term debt 2,108,037 1,878,000 1,893,740
Repayments of long-term debt (2,195,750) (2,106,639) (2,036,171)
Payments for debt issuance costs (12,147) (1,011) (8,823)
Payments for settlement of interest rate swaps that include financing elements (2,207)    
Net proceeds from the sale of Partnership units   114,530 289,908
Proceeds from stock options exercised 8,321 562 526
Proceeds from stock issued pursuant to our employee stock purchase plan 1,632 1,635 1,887
Purchases of treasury stock (4,539) (2,422) (2,941)
Stock-based compensation excess tax benefit 1,910 1,139 1,034
Distributions to noncontrolling partners in the Partnership (61,959) (57,084) (39,870)
Net cash provided by (used in) financing activities (156,702) (171,290) 99,290
Effect of exchange rate changes on cash and cash equivalents (1,487) (486) (3,007)
Net increase (decrease) in cash and cash equivalents 1,064 12,698 (22,458)
Cash and cash equivalents at beginning of period 34,601 21,903 44,361
Cash and cash equivalents at end of period 35,665 34,601 21,903
Supplemental disclosure of cash flow information:      
Interest paid, net of capitalized amounts 80,775 95,416 100,735
Income taxes paid, net 54,478 29,089 59,735
Supplemental disclosure of non-cash transactions:      
Accrued capital expenditures $ 13,360 $ 21,692 $ 21,025