Condensed Consolidated Statements of Comprehensive Income (Unaudited) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Comprehensive Income
Net Income (Loss) Attributable to Parent	$ 467	$ 495
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	467	495
Total comprehensive income	689	1,233
Other comprehensive income (loss)
Other Comprehensive Income (Loss), Net of Tax	222	738
Accumulated Net Unrealized Investment Gain (Loss) [Member]
Other comprehensive income (loss)
Other Comprehensive Income (Loss), Net of Tax	208	699
Accumulated Other-than-Temporary Impairment [Member]
Other comprehensive income (loss)
Other Comprehensive Income (Loss), Net of Tax	(3)	2
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member]
Other comprehensive income (loss)
Other Comprehensive Income (Loss), Net of Tax	27	13
Accumulated Translation Adjustment [Member]
Other comprehensive income (loss)
Other Comprehensive Income (Loss), Net of Tax	(20)	17
Accumulated Defined Benefit Plans Adjustment [Member]
Other comprehensive income (loss)
Other Comprehensive Income (Loss), Net of Tax	$ 10	$ 7