Note 7 - Goodwill (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013		Mar. 31, 2012
Goodwill, Impairment Loss	$ 77	[1]		[1]

[1] Refer to Note 7, "goodwill", in the Notes to Financial Statements.Consolidated Statement of Financial Position as of December 31, 2012.