Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Comprehensive Income
Net Income (Loss) Attributable to Parent	$ 381	$ 388	$ 1,261	$ 416
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	381	388	1,261	416
Other Comprehensive Income (Loss), Net of Tax	(48)	(85)	(788)	1,156
Total comprehensive income	333	303	473	1,572
Accumulated Net Investment Gain (Loss) Attributable to Parent [Member]
Comprehensive Income
Other Comprehensive Income (Loss), Net of Tax	(94)	(62)	(807)	1,206
Accumulated Other-than-Temporary Impairment [Member]
Comprehensive Income
Other Comprehensive Income (Loss), Net of Tax	3	2	1	7
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member]
Comprehensive Income
Other Comprehensive Income (Loss), Net of Tax	48	(21)	20	12
Accumulated Translation Adjustment [Member]
Comprehensive Income
Other Comprehensive Income (Loss), Net of Tax	(14)	(13)	(30)	(91)
Accumulated Defined Benefit Plans Adjustment [Member]
Comprehensive Income
Other Comprehensive Income (Loss), Net of Tax	$ 9	$ 9	$ 28	$ 22