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Note 21 - Condensed Combined Debtor-In-Possession Financial Information (Detail) - Pre-Petition Liabilities Subject to Compromise (USD $)
In Millions, unless otherwise specified
Mar. 31, 2013
Dec. 31, 2012
Accounts payable $ 281 $ 283
Debt 683 683
Pension obligations 749 785
Settlements 802 710
Other liabilities subject to compromise 231 255
Liabilities subject to compromise 2,746 2,716
Liabilities Subject to Compromise Pre-Petition [Member]
   
Accounts payable 281 283
Debt 683 683
Pension obligations 749 785
Settlements 802 710
Payables and advances to non-filing entities 194 193
Other liabilities subject to compromise 231 255
Liabilities subject to compromise $ 2,940 $ 2,909