CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (unaudited) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]
NET INCOME	$ 610	$ 607	$ 883	$ 1,068
Net unrealized gains (losses) on cash flow hedges:
Effective portion of net unrealized gains (losses) (net of $25 tax expense, $24 tax benefit, $52 tax expense and $26 tax benefit, respectively)	36	(42)	101	(49)
Reclassification from accumulated other comprehensive income to net income (net of $9, $2, $22 and $11 tax expense, respectively)	18	5	39	21
Net unrealized gains (losses) on available for sale securities:
Net unrealized gains (losses) on securities still held (net of $1 tax expense, $6 tax benefit, $27 and $25 tax expense, respectively)	2	(9)	42	38
Reclassification from accumulated other comprehensive income to net income (net of $3, $21, $7 and $25 tax benefit, respectively)	(4)	(32)	(10)	(37)
Defined benefit pension and other benefits plans (net of less than a million, $5 and $4 tax expense and $3 tax benefit, respectively)	0	6	7	(6)
Net unrealized gains (losses) on foreign currency translation (net of $11, $1 and $16 tax benefit and $2 tax expense, respectively)	(23)	(3)	(32)	3
Other comprehensive income (loss) related to equity method investee (net of $3, $1 and $4 tax expense and $4 tax benefit, respectively)	5	(21)	6	(6)
Total other comprehensive income (loss), net of tax	34	(96)	153	(36)
COMPREHENSIVE INCOME	$ 644	$ 511	$ 1,036	$ 1,032