CONDENSED COMBINED FINANCIAL STATEMENTS OF DEBTOR SUBSIDIARIES (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
ASSETS
Cash and cash equivalents	$ 507,342	$ 54,877	$ 253,649	$ 474,690
Voyage receivables	179,259	168,313
Other receivables	28,900	25,107
Inventories	15,532	19,219
Prepaid expenses and other current assets	40,394	47,401
Total Current Assets	771,427	320,358
Vessels and other property, less accumulated depreciation	2,837,288	3,226,923
Deferred drydock expenditures, net	74,418	66,023	46,827	58,535
Total Vessels, Deferred Drydock and Other Property	2,911,706	3,292,946
Investments in Affiliated Companies	252,398	232,370
Intangible Assets, less accumulated amortization	71,975	77,158
Goodwill	9,589	9,589
Other Assets	26,440	61,124
Total Assets	4,043,535	3,993,545	3,854,237
LIABILITIES AND EQUITY
Accounts payable, accrued expenses and other current liabilities	99,273	124,743
Deferred income taxes	25,900	0
Income taxes payable, including reserve for uncertain tax positions of $326,121	329,799	368
Total Current Liabilities	454,972	140,101
Noncurrent Liabilities:
Reserve for Uncertain Tax Positions	17,067	323,403
Deferred Gain on Sale and Leaseback of Vessels	3,839	11,051
Deferred Income Taxes	343,162	396,679
Other Liabilities	37,712	69,117
Liabilities Subject to Compromise, including pre-petition intercompany payables	2,652,537	0
Total Liabilities	3,509,289	2,991,253
Equity:
Total Equity	534,246	1,002,292	1,283,153	1,867,855
Total Liabilities and Equity	4,043,535	3,993,545
Combined Debtor Entities [Member]
ASSETS
Cash and cash equivalents	471,726	44,685
Voyage receivables	178,635
Other receivables	38,153
Inventories	15,532
Prepaid expenses and other current assets	40,070
Total Current Assets	744,116
Vessels and other property, less accumulated depreciation	2,849,331
Deferred drydock expenditures, net	74,418
Total Vessels, Deferred Drydock and Other Property	2,923,749
Investments in Affiliated Companies	252,098
Intangible Assets, less accumulated amortization	71,736
Goodwill	9,668
Investments in subsidiaries	147,921
Pre and Post-petition intercompany loans receivable and accrued interest	76,611
Pre-petition intercompany receivables	2,233,404
Post-petition intercompany receivables	927
Other Assets	26,767
Total Assets	6,486,997
LIABILITIES AND EQUITY
Accounts payable, accrued expenses and other current liabilities	84,477
Deferred income taxes	25,900
Income taxes payable, including reserve for uncertain tax positions of $326,121	329,922
Total Current Liabilities	440,299
Noncurrent Liabilities:
Reserve for Uncertain Tax Positions	17,067
Deferred Gain on Sale and Leaseback of Vessels	3,839
Deferred Income Taxes	346,620
Other Liabilities	29,326
Post-petition intercompany payables	47,075
Liabilities Subject to Compromise, including pre-petition intercompany payables	4,811,562
Total Liabilities	5,695,788
Equity:
Total Equity	791,209
Total Liabilities and Equity	$ 6,486,997