DEBT (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Long-term Debt	$ 0	$ 2,065,892
Balance Prior To Financial Statement Reclassification [Member]
Long-term Debt	2,572,676
Subject To Compromise [Member]
Long-term Debt	(2,572,676)
Unsecured Debt [Member]
Line of Credit Facility, Amount Outstanding	0	917,000
Unsecured Debt [Member] | Balance Prior To Financial Statement Reclassification [Member]
Line of Credit Facility, Amount Outstanding	1,489,000
Unsecured Debt [Member] | Subject To Compromise [Member]
Line of Credit Facility, Amount Outstanding	(1,489,000)
Notes 8.125 Percent Due 2018 [Member]
Long-term Debt	0	296,632
Notes 8.125 Percent Due 2018 [Member] | Balance Prior To Financial Statement Reclassification [Member]
Long-term Debt	297,102
Notes 8.125 Percent Due 2018 [Member] | Subject To Compromise [Member]
Long-term Debt	(297,102)
Notes 7.50 Percent Due 2024 [Member]
Long-term Debt	0	146,000
Notes 7.50 Percent Due 2024 [Member] | Balance Prior To Financial Statement Reclassification [Member]
Long-term Debt	146,000
Notes 7.50 Percent Due 2024 [Member] | Subject To Compromise [Member]
Long-term Debt	(146,000)
Debentures 8.75 Percent Due 2013 [Member]
Long-term Debt	0	63,583
Debentures 8.75 Percent Due 2013 [Member] | Balance Prior To Financial Statement Reclassification [Member]
Long-term Debt	63,592
Debentures 8.75 Percent Due 2013 [Member] | Subject To Compromise [Member]
Long-term Debt	(63,592)
Floating Rate Secured Term Loan Due Through 2023 [Member]
Line of Credit Facility, Amount Outstanding	310,492
Long-term Debt	0	642,677
Floating Rate Secured Term Loan Due Through 2023 [Member] | Balance Prior To Financial Statement Reclassification [Member]
Long-term Debt	576,982
Floating Rate Secured Term Loan Due Through 2023 [Member] | Subject To Compromise [Member]
Long-term Debt	$ (576,982)