Note 21 - Condensed Combined Debtor-In-Possession Financial Information (Detail) - Debtors’ Statement Of Operations (Parentheticals) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Interest expense - contractual interest (in Dollars)	$ 30	$ 36
Debtor in Possession [Member] | Contractual Interest [Member]
Interest expense - contractual interest (in Dollars)	40	46
Debtor in Possession [Member]
Interest expense - contractual interest (in Dollars)	$ 28	$ 36