Condensed Consolidated Statements of Changes in Stockholders' Equity (Unaudited) - USD ($) $ in Millions	Total	Dividend to Parent [Member]	Retained Earnings (Accumulated Deficit)	Noncontrolling Interest [Member]	Additional Paid-in Capital	Accumulated Other Comprehensive Income (Loss)	Common Stock	Extraordinary Item [Member] Dividend to Parent [Member]
Balance, at beginning of period at Dec. 31, 2014	$ 9,291		$ 1,376	$ 0	$ 6,688	$ 1,221	$ 6
Dividends		$ (1,002)
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	493
Net Income (Loss) Attributable to Parent	492		492
Net Income (Loss) Attributable to Noncontrolling Interest	1			1
Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests	1			1
Total other comprehensive income	(446)					(446)
Balance, at end of period at Sep. 30, 2015	8,335		1,868	0	5,686	775	6
Balance, at beginning of period at Jun. 30, 2015						849
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	118
Net Income (Loss) Attributable to Parent	117
Net Income (Loss) Attributable to Noncontrolling Interest	1
Total other comprehensive income	(74)
Balance, at end of period at Sep. 30, 2015	8,335		1,868	0	5,686	775	6
Balance, at beginning of period at Dec. 31, 2015	8,162		1,876	0	5,687	593	6
Dividends	(750)							$ (755)
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	225
Net Income (Loss) Attributable to Parent	225		225
Net Income (Loss) Attributable to Noncontrolling Interest	0			0
Total other comprehensive income	598
Balance, at end of period at Sep. 30, 2016	8,230		2,101	0	4,932	1,191	6
Balance, at beginning of period at Jun. 30, 2016						1,068
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	79
Net Income (Loss) Attributable to Parent	79
Net Income (Loss) Attributable to Noncontrolling Interest	0
Total other comprehensive income	123
Balance, at end of period at Sep. 30, 2016	$ 8,230		$ 2,101	$ 0	$ 4,932	$ 1,191	$ 6