CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (unaudited) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]
NET INCOME	$ 698	$ 415	$ 1,581	$ 1,482
Net unrealized gains (losses) on cash flow hedges:
Effective portion of net unrealized gains (losses) (net of $7 and $15 tax benefit, $45 tax expense and $41 tax benefit, respectively)	(18)	(30)	83	(79)
Reclassification from accumulated other comprehensive income to net income (net of $5, $7, $27 and $18 tax expense, respectively)	9	3	48	24
Net unrealized gains (losses) on available for sale securities:
Net unrealized gains on securities still held (net of $22, $18, $49 and $44 tax expense, respectively)	30	26	72	64
Reclassification from accumulated other comprehensive income to net income (net of $4, $18, $11 and $43 tax benefit, respectively)	(7)	(27)	(17)	(64)
Defined benefit pension and other benefits plans (net of less than a million, less than a million, $5 tax expense and $3 tax benefit, respectively)	0	0	7	(6)
Net unrealized gains (losses) on foreign currency translation (net of $2 tax expense, $2 tax expense, $13 tax benefit and $3 tax expense, respectively)	6	3	(26)	6
Other comprehensive income (loss) related to equity method investee (net of less than a million, $3 tax benefit, $4 tax expense and $7 tax benefit, respectively)	0	(4)	6	(10)
Total other comprehensive income (loss), net of tax	20	(29)	173	(65)
COMPREHENSIVE INCOME	$ 718	$ 386	$ 1,754	$ 1,417