INTERIM CONSOLIDATED STATEMENTS OF INCOME - USD ($) $ in Millions				1 Months Ended	3 Months Ended		9 Months Ended
	Sep. 06, 2018	May 14, 2018	Feb. 16, 2018	Sep. 30, 2018	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
REVENUES
Revenue from contracts with customers					$ 702	$ 496	$ 1,797	$ 1,522
Financing					48	34	119	99
Cost reimbursements					234	177	652	561
TOTAL REVENUES				$ 470	750	530	1,916	1,621
EXPENSES
Marketing and sales					135	94	346	287
Rental					19	11	40	30
General and administrative					53	26	114	81
Depreciation and amortization					18	6	29	16
Litigation settlement					17	2	33	2
Royalty fee					19	15	50	47
Cost reimbursements					234	177	652	561
TOTAL EXPENSES				490	698	472	1,762	1,444
Gains (losses) and other income (expense), net					2	7	(4)	7
Interest expense				(5)	(14)	(2)	(23)	(5)
ILG acquisition-related costs				(72)	(108)	0	(128)	(1)
Other					0	0	(3)	0
(LOSS) INCOME BEFORE INCOME TAXES AND NONCONTROLLING INTERESTS					(68)	63	(4)	178
Benefit (provision) for income taxes				29	10	(23)	(7)	(62)
NET (LOSS) INCOME				(68)	(58)	40	(11)	116
Net income attributable to noncontrolling interests				0	0	0	0	0
NET (LOSS) INCOME ATTRIBUTABLE TO COMMON SHAREHOLDERS				$ (68)	$ (58)	$ 40	$ (11)	$ 116
(LOSSES) EARNINGS PER SHARE ATTRIBUTABLE TO COMMON SHAREHOLDERS
Basic (in usd per share)					$ (1.75)	$ 1.49	$ (0.37)	$ 4.27
Diluted (in usd per share)					(1.75)	1.45	(0.37)	4.18
CASH DIVIDENDS DECLARED PER SHARE (in usd per share)	$ 0.40	$ 0.40	$ 0.40		$ 0.40	$ 0.35	$ 1.20	$ 1.05
Sale of vacation ownership products
REVENUES
Revenue from contracts with customers					$ 252	$ 183	$ 632	$ 549
EXPENSES
Expenses					64	46	167	141
Resort management and other services
REVENUES
Revenue from contracts with customers					126	70	274	209
EXPENSES
Expenses					65	38	140	111
Rental
REVENUES
Revenue from contracts with customers					90	66	239	203
EXPENSES
Expenses					$ 74	$ 57	$ 191	$ 168