Note 16 - Accumulated Other Comprehensive Income (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended	6 Months Ended
Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Note 16 - Accumulated Other Comprehensive Income (Details) [Line Items]
Other Comprehensive Income (Loss), Tax, Portion Attributable to Parent	$ (27)		$ (42)	$ 20
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Tax, Portion Attributable to Parent	(20)	3	(33)	17
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, before Reclassification Adjustments, Tax	(8)		(8)
Other Comprehensive Income (Loss), Available-for-sale Securities, Tax, Portion Attributable to Parent	1		(1)	3
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Tax	11	(2)	18	(4)
Other Comprehensive (Income) Loss, Reclassification Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, Tax		1		3
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Tax				(3)
Reclassification out of Accumulated Other Comprehensive Income [Member]
Note 16 - Accumulated Other Comprehensive Income (Details) [Line Items]
Other Comprehensive Income (Loss), Tax, Portion Attributable to Parent		(1)	16	(4)
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Tax, Portion Attributable to Parent			$ (2)

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Amount of tax expense (benefit), after reclassification adjustments, of appreciation (loss) in value of unsold available-for-sale securities, attributable to parent entity. Excludes amounts related to other than temporary impairment (OTTI) loss.

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Amount of tax (expense) benefit, after reclassification adjustments, of (increase) decrease in accumulated other comprehensive (income) loss related to pension and other postretirement defined benefit plans, attributable to parent entity.

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Amount of tax expense (benefit) of reclassification adjustment from accumulated other comprehensive income for unrealized gain (loss) realized upon the sale of available-for-sale securities.

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