Condensed Consolidated Statements of Changes in Stockholders' Equity (Unaudited) - USD ($) $ in Millions	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance	$ 6,680	$ 6	$ 3,539	$ 2,112	$ 1,023
Cumulative effect of accounting change				(182)	182
Adjusted balance, beginning of period				1,930	1,205
Ending Balance	6,680	6	3,539	2,112	1,023
Net income (loss)	125			125
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent					(321)
Adjustment to APIC, Contribution from Parent	2
Beginning Balance	6,486	6	3,541	2,055	884
Ending Balance	6,486	6	3,541	2,055	884
Beginning Balance	2,005	6	1,761	409	(171)
Ending Balance	2,005	6	1,761	409	(171)
Net income (loss)	32			32
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent					352
Beginning Balance	2,389	6	1,761	441	181
Ending Balance	$ 2,389	$ 6	$ 1,761	$ 441	$ 181