Consolidated Statements of Changes in Stockholder's Equity - USD ($) $ in Millions	Total		Common Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Noncontrolling Interests
Balance, beginning at Dec. 31, 2015	$ 16,593		$ 144	$ 7,868	$ 9,116	$ (750)	$ 215
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	373	[1]			396		(23)
Other comprehensive income (loss), net of tax	360					360
Compensation—restricted stock units	0			1	(1)
Other	7			1	(2)		8
Net change	740			2	393	360	(15)
Balance, ending at Jun. 30, 2016	17,333		144	7,870	9,509	(390)	200
Balance, beginning at Dec. 31, 2016	17,386		144	7,884	10,101	(896)	153
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	509	[2]			524		(15)
Other comprehensive income (loss), net of tax	67					67
Compensation—restricted stock units	(16)			(16)	0
Other	(9)			0	0		(9)
Net change	551			(16)	524	67	(24)
Balance, ending at Jun. 30, 2017	$ 17,937		$ 144	$ 7,868	$ 10,625	$ (829)	$ 129

[1] The transferred IHC entities are not measured using a "market view" perspective.

[2] The transferred IHC entities are not measured using a "market view" perspective.