Revenue from Contracts with Customers - Schedule of Adjustments Made to Condensed Consolidated Balance Sheet (Details) - USD ($) $ in Millions	Oct. 31, 2018	Sep. 30, 2018	Jan. 01, 2018	Dec. 31, 2017
ASSETS
Cash and cash equivalents		$ 145		$ 246
Restricted cash		67		51
Accounts receivable, net of allowance for doubtful accounts		151		112
Timeshare financing receivables, net		1,103		1,071
Inventory		582		509
Property and equipment, net		538		238
Investment in unconsolidated affiliate		33		41
Intangible assets, net		73		72
Other assets		121		44
TOTAL ASSETS (variable interest entities - $691 and $471)		2,813		2,384
Liabilities:
Accounts payable, accrued expenses and other		337		339
Advanced deposits		100		104
Debt, net		530		482
Non-recourse debt, net		806		583
Deferred revenues	$ 154	263		109
Deferred income tax liabilities		215		249
Total liabilities (variable interest entities - $688 and $455)		2,251		1,866
Commitments and contingencies
Equity:
Preferred stock, $0.01 par value; 300,000,000 authorized shares, none issued or outstanding as of September 30, 2018 and December 31, 2017		0		0
Common stock, $0.01 par value; 3,000,000,000 authorized shares, 96,906,759 issued and outstanding as of September 30, 2018 and 99,136,304 issued and outstanding as of December 31, 2017		1		1
Additional paid-in capital		174		162
Accumulated retained earnings		387		355
Total equity		562		518
TOTAL LIABILITIES AND EQUITY		2,813		$ 2,384
Topic 606
ASSETS
Cash and cash equivalents			$ 246
Restricted cash			51
Accounts receivable, net of allowance for doubtful accounts			112
Timeshare financing receivables, net			1,071
Inventory			539
Property and equipment, net			238
Investment in unconsolidated affiliate			41
Intangible assets, net			72
Other assets			60
TOTAL ASSETS (variable interest entities - $691 and $471)			2,430
Liabilities:
Accounts payable, accrued expenses and other			341
Advanced deposits			87
Debt, net			482
Non-recourse debt, net			583
Deferred revenues			221
Deferred income tax liabilities			236
Total liabilities (variable interest entities - $688 and $455)			1,950
Commitments and contingencies
Equity:
Preferred stock, $0.01 par value; 300,000,000 authorized shares, none issued or outstanding as of September 30, 2018 and December 31, 2017			0
Common stock, $0.01 par value; 3,000,000,000 authorized shares, 96,906,759 issued and outstanding as of September 30, 2018 and 99,136,304 issued and outstanding as of December 31, 2017			1
Additional paid-in capital			162
Accumulated retained earnings			317
Total equity			480
TOTAL LIABILITIES AND EQUITY			2,430
Topic 606 | Impact of Adopting ASC 606
ASSETS
Cash and cash equivalents		0	0
Restricted cash		0	0
Accounts receivable, net of allowance for doubtful accounts		(5)	0
Timeshare financing receivables, net		0	0
Inventory		(47)	30
Property and equipment, net		0	0
Investment in unconsolidated affiliate		0	0
Intangible assets, net		0	0
Other assets		(20)	16
TOTAL ASSETS (variable interest entities - $691 and $471)		(72)	46
Liabilities:
Accounts payable, accrued expenses and other		(29)	2
Advanced deposits		17	(17)
Debt, net		0	0
Non-recourse debt, net		0	0
Deferred revenues		(142)	112
Deferred income tax liabilities		30	(13)
Total liabilities (variable interest entities - $688 and $455)		(124)	84
Commitments and contingencies
Equity:
Preferred stock, $0.01 par value; 300,000,000 authorized shares, none issued or outstanding as of September 30, 2018 and December 31, 2017		0	0
Common stock, $0.01 par value; 3,000,000,000 authorized shares, 96,906,759 issued and outstanding as of September 30, 2018 and 99,136,304 issued and outstanding as of December 31, 2017			0
Additional paid-in capital		0	0
Accumulated retained earnings		52	(38)
Total equity		52	(38)
TOTAL LIABILITIES AND EQUITY		$ (72)	$ 46