Consolidated Statements of Comprehensive Income Consolidated Statement of Comprehensive Income (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Net Income (Loss) Attributable to Parent	$ 405	$ 352
Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax	108	(73)
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax	(50)	(71)
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Adjustment, Net of Tax	31	20
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	89	(124)
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	$ 494	$ 228