Note 21 - Condensed Combined Debtor-In-Possession Financial Information (Detail) - Debtors' Statement of Retained Earnings (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Retained earnings at beginning of period	$ 2,600	$ 4,071
Net earnings (loss) and change in equity in earnings (loss) of non-filing entities attributable to Debtor Entities	283	(366)
Loss from issuance of treasury stock	(31)	(60)
Retained earnings at end of period	2,852	3,645
Condensed Combined Debtor in Possession Retained Earnings [Member]
Retained earnings at beginning of period	3,378	4,845
Net earnings (loss) and change in equity in earnings (loss) of non-filing entities attributable to Debtor Entities	306	(335)
Loss from issuance of treasury stock	(31)	(60)
Retained earnings at end of period	$ 3,653	$ 4,450