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				2,158	722
Ending Balance			4,935	2,158	722
Return of capital to parent			(598)
Net income (loss)	$ 270			270
Other Comprehensive Income (Loss), Net of Tax					222
Beginning Balance					919
Ending Balance					919
Net income (loss)	83
Beginning Balance	7,715	$ 6	4,337	2,428	944
Cumulative effect of accounting change					0
Ending Balance	7,715	6	4,337	2,428	944
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	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)	124			124
Other Comprehensive Income (Loss), Net of Tax					(122)
Beginning Balance					(73)
Ending Balance					(73)
Net income (loss)	67
Beginning Balance	1,769	6	1,761	124	(122)
Cumulative effect of accounting change				0	0
Ending Balance	$ 1,769	$ 6	$ 1,761	$ 124	$ (122)