Condensed Consolidated Statements of Changes in Stockholders' Equity (Unaudited) - USD ($) $ in Millions	Total	Additional Paid-in Capital [Member]	AOCI Attributable to Parent [Member]	Retained Earnings [Member]
Common Stock, Value, Issued	$ 6
Additional Paid in Capital	5,687
Accumulated Other Comprehensive Income (Loss), Net of Tax	593
Retained Earnings (Accumulated Deficit)	1,876
Dividends		$ 505
Total other comprehensive income	475		$ 475
Net Income (Loss) Attributable to Parent				$ 146
Balance, at beginning of period at Dec. 31, 2015	8,162
Balance, at end of period at Jun. 30, 2016	8,278
Accumulated Other Comprehensive Income (Loss), Net of Tax	835
Total other comprehensive income	233
Balance, at end of period at Jun. 30, 2016	8,278
Common Stock, Value, Issued	6
Additional Paid in Capital	5,182
Accumulated Other Comprehensive Income (Loss), Net of Tax	1,068
Retained Earnings (Accumulated Deficit)	2,022
Common Stock, Value, Issued	6
Additional Paid in Capital	4,935
Accumulated Other Comprehensive Income (Loss), Net of Tax	722
Retained Earnings (Accumulated Deficit)	2,158
Dividends		$ 299
Total other comprehensive income	197		$ 197
Net Income (Loss) Attributable to Parent				$ 187
Balance, at beginning of period at Dec. 31, 2016	7,821
Balance, at end of period at Jun. 30, 2017	7,906
Accumulated Other Comprehensive Income (Loss), Net of Tax	759
Total other comprehensive income	160
Balance, at end of period at Jun. 30, 2017	7,906
Common Stock, Value, Issued	6
Additional Paid in Capital	4,636
Accumulated Other Comprehensive Income (Loss), Net of Tax	919
Retained Earnings (Accumulated Deficit)	$ 2,345