Consolidated Statement of Comprehensive Income/(Loss) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Net income/(loss)	$ 275	$ 178	$ 525	$ 358
Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax	142	190	192	121
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax	(69)	72	(170)	(53)
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Adjustment, Net of Tax	(4)	(19)	(28)	(16)
Other Comprehensive Income (Loss), Net of Tax	69	243	(6)	52
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	$ 344	$ 421	$ 519	$ 410