CONSOLIDATED STATEMENTS OF EQUITY - 6 months ended Jun. 30, 2017 - USD ($) $ in Millions	Noncontrolling Interest [Member]	Parent [Member]	Common Stock [Member]	Treasury Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Total
Balance at Dec. 31, 2016	$ 26	$ 1,567	$ 1	$ (136)	$ 1,262	$ 492	$ (52)	$ 1,593
Balance (in shares) at Dec. 31, 2016			133,545,864	8,878,489				124,700,000
Increase (Decrease) in Stockholders' Equity
Net income	1	72				72		$ 73
Other comprehensive loss, net of tax	2	13					13	15
Non-cash compensation expense		12			12			12
Issuance of common stock in connection with the Vistana acquisition (in shares)			(33,279)
Issuance of common stock upon vesting of RSUs, net of withholding taxes		(5)			(5)			(5)
Issuance of common stock upon vesting of RSUs, net of withholding taxes (in shares)			436,811
Deferred stock compensation expense		(1)			(1)			(1)
Dividends declared on common stock		(38)			1	(39)		(38)
Dividends declared on common stock (in shares)			3,348
Treasury stock purchases		(3)		$ (3)				(3)
Treasury stock purchases (in shares)				159,138
Balance at Jun. 30, 2017	$ 29	$ 1,617	$ 1	$ (139)	$ 1,269	$ 525	$ (39)	$ 1,646
Balance (in shares) at Jun. 30, 2017			133,952,744	9,037,627				124,900,000