Note 15 - 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
Accumulated Other Comprehensive Income (Loss), Tax [Roll Forward]
Accumulated other comprehensive income (loss) tax provision (benefit), beginning balance	$ (282)		$ (225)
Other comprehensive income before reclassifications, tax	(35)		(92)
Amounts reclassified from accumulated other comprehensive income, tax	0		0
Net current period other comprehensive income, tax	(35)		(92)
Accumulated other comprehensive income (loss) tax provision (benefit), ending balance	(317)		(317)
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated other comprehensive income (loss), net of tax, beginning balance	724		856
Other comprehensive income before reclassifications	105		(30)
Amounts reclassified from other comprehensive income	3		0
Other comprehensive income (loss), net tax	102	(400)	(30)	(85)
Accumulated other comprehensive income (loss), net of tax, ending balance	826		826
Unrealized Gains (Losses) on Cash Flow Hedges
Accumulated Other Comprehensive Income (Loss), Before Tax [Roll Forward]
Accumulated other comprehensive income (loss), before tax, beginning balance	31		(55)
Other comprehensive income, before reclassifications, before tax	25		107
Amounts reclassified from accumulated other comprehensive income, before tax	0		(4)
Net current period other comprehensive income , before tax	25		111
Accumulated other comprehensive income (loss), before tax, ending balance	56		56
Unrealized Gains on Investments
Accumulated Other Comprehensive Income (Loss), Before Tax [Roll Forward]
Accumulated other comprehensive income (loss), before tax, beginning balance	827		687
Other comprehensive income, before reclassifications, before tax	79		220
Amounts reclassified from accumulated other comprehensive income, before tax	3		4
Net current period other comprehensive income , before tax	76		216
Accumulated other comprehensive income (loss), before tax, ending balance	903		903
Foreign Currency Translation
Accumulated Other Comprehensive Income (Loss), Before Tax [Roll Forward]
Accumulated other comprehensive income (loss), before tax, beginning balance	148		449
Other comprehensive income, before reclassifications, before tax	36		(265)
Amounts reclassified from accumulated other comprehensive income, before tax	0		0
Net current period other comprehensive income , before tax	36		(265)
Accumulated other comprehensive income (loss), before tax, ending balance	$ 184		$ 184