Condensed Consolidating Guarantor Financial Information - Balance Sheet (Details) - USD ($) $ in Millions	Sep. 30, 2019	Aug. 31, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017
ASSETS
Cash and cash equivalents	$ 113				$ 108
Restricted cash	98	$ 21			72
Accounts receivable, net	137				153
Timeshare financing receivables, net	1,139				1,120
Inventory	518				527
Property and equipment, net	765				559
Operating lease right-of-use assets, net	62
Investments in unconsolidated affiliates	44				38
Intangible assets, net	87				81
Other assets	75				95
TOTAL ASSETS (variable interest entities - $799 and $647)	3,038				2,753
LIABILITIES AND EQUITY
Accounts payable, accrued expenses and other	343				324
Advanced deposits	112				101
Debt, net	815				604
Non-recourse debt, net	795				759
Operating lease liabilities	78
Deferred revenues	165				95
Deferred income tax liabilities	236				254
Total equity	494		$ 450	$ 575	616	$ 562	$ 517	$ 400	$ 518
TOTAL LIABILITIES AND EQUITY	3,038				2,753
Parent
ASSETS
Cash and cash equivalents	2				4
Investments in subsidiaries	492				612
TOTAL ASSETS (variable interest entities - $799 and $647)	494				616
LIABILITIES AND EQUITY
Total equity	494				616
TOTAL LIABILITIES AND EQUITY	494				616
Issuers
ASSETS
Other assets	5				6
Investments in subsidiaries	1,275				1,210
TOTAL ASSETS (variable interest entities - $799 and $647)	1,280				1,216
LIABILITIES AND EQUITY
Debt, net	788				604
Total equity	492				612
TOTAL LIABILITIES AND EQUITY	1,280				1,216
Guarantors
ASSETS
Cash and cash equivalents	79				89
Restricted cash	48				45
Accounts receivable, net	142				157
Timeshare financing receivables, net	380				209
Inventory	480				502
Property and equipment, net	713				553
Operating lease right-of-use assets, net	60
Investments in unconsolidated affiliates	44				38
Intangible assets, net	87				81
Other assets	59				41
Investments in subsidiaries	144				277
TOTAL ASSETS (variable interest entities - $799 and $647)	2,236				1,992
LIABILITIES AND EQUITY
Accounts payable, accrued expenses and other	346				332
Advanced deposits	111				101
Debt, net	27
Operating lease liabilities	76
Deferred revenues	165				95
Deferred income tax liabilities	236				254
Total equity	1,275				1,210
TOTAL LIABILITIES AND EQUITY	2,236				1,992
Non-Guarantors
ASSETS
Cash and cash equivalents	32				15
Restricted cash	50				27
Accounts receivable, net	22				17
Timeshare financing receivables, net	759				911
Inventory	38				25
Property and equipment, net	52				6
Operating lease right-of-use assets, net	2
Other assets	11				48
TOTAL ASSETS (variable interest entities - $799 and $647)	966				1,049
LIABILITIES AND EQUITY
Accounts payable, accrued expenses and other	24				13
Advanced deposits	1
Non-recourse debt, net	795				759
Operating lease liabilities	2
Total equity	144				277
TOTAL LIABILITIES AND EQUITY	966				1,049
Eliminations
ASSETS
Accounts receivable, net	(27)				(21)
Investments in subsidiaries	(1,911)				(2,099)
TOTAL ASSETS (variable interest entities - $799 and $647)	(1,938)				(2,120)
LIABILITIES AND EQUITY
Accounts payable, accrued expenses and other	(27)				(21)
Total equity	(1,911)				(2,099)
TOTAL LIABILITIES AND EQUITY	$ (1,938)				$ (2,120)