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, net of tax
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance			$ 4,935	$ 2,158	$ 722
Adjusted balance, beginning of period					722
Ending Balance			4,935	2,158	722
Return of capital to parent			(299)
Net income (loss)	$ 187			187
Other Comprehensive Income (Loss), Net of Tax					197
Beginning Balance					759
Ending Balance					759
Net income (loss)	112
Beginning Balance	7,906	$ 6	4,636	2,345	919
Cumulative effect of accounting change					0
Adjusted balance, beginning of period				2,158
Ending Balance	7,906	6	4,636	2,345	919
Beginning Balance	6,680		3,539	2,112	1,023
Cumulative effect of accounting change					182
Adjusted balance, beginning of period				1,930	1,205
Ending Balance	6,680		3,539	2,112	1,023
Return of capital to parent			(517)
Net income (loss)	94			94
Other Comprehensive Income (Loss), Net of Tax					(447)
Beginning Balance					884
Ending Balance					884
Net income (loss)	(31)
Beginning Balance	5,810	6	3,022	2,024	758
Cumulative effect of accounting change				(182)	182
Ending Balance	5,810	6	3,022	2,024	758
Return of capital to parent			0
Net income (loss)	57			57
Other Comprehensive Income (Loss), Net of Tax					(73)
Beginning Balance	1,751	6	1,761	57	(73)
Cumulative effect of accounting change				0	0
Ending Balance	$ 1,751	$ 6	$ 1,761	$ 57	$ (73)