Condensed Combined Consolidated Statements of Equity (Unaudited) - USD ($) $ in Millions	Total		Common Stock [member]	Additional Paid-in Capital [member]	Retained Earnings [member]	Accumulated Other Comprehensive Loss [member]	Net Parent Investment [member]	Non-Controlling Interests [member]
Balance at Dec. 31, 2015	$ 2,797					$ (63)	$ 2,884	$ (24)
Net income	122	[1]					116	6
Other comprehensive income	9					9
Net transfers (to) from Parent	167						167
Distribution to Parent	(48)					3	(51)
Contribution from Parent	1,032						1,032
Distributions to noncontrolling interests	(6)							(6)
Cumulative effect of the adoption of ASU 2015-02	(2)						(3)	1
Balance at Sep. 30, 2016	4,071					(51)	4,145	(23)
Balance at Dec. 31, 2016	3,823					(67)	3,939	(49)
Net income	2,570				$ 2,565			5
Other comprehensive income	22					22
Net transfers (to) from Parent	(9)						(9)
Issuance of common stock and reclassification of former Parent investment			$ 2	$ 3,928			$ (3,930)
Issuance of common stock and reclassification of former Parent investment (shares)			198,000,000
Share-based compensation	9			9
Share-based compensation (Shares)			1,000,000
Dividends and dividend equivalents	(389)			(110)	(279)
Dividends and dividend equivalents (Shares)			16,000,000
Distributions to noncontrolling interests	(3)							(3)
Balance at Sep. 30, 2017	$ 6,023		$ 2	$ 3,827	$ 2,286	$ (45)		$ (47)
Balance (shares) at Sep. 30, 2017	214,847,061		215,000,000

[1] Prior to the spin-off, we had one operating and reportable segment, our ownership segment. Prior period presentation has been restated to reflect our current reportable segment.