Consolidated Statements Of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Operating Activities
Net income	$ 672	$ 855	$ 612
Loss/(income) from operations of discontinued businesses, net of income taxes	50	(209)	(260)
Income on disposal of discontinued business, net of income taxes	(456)	0	0
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	138	136	127
Provision for loan losses	456	420	342
Deferred income taxes	122	(397)	72
Stock-based compensation	129	59	57
Excess tax benefits from stock-based compensation	0	0	(9)
Impairment charges related to abandonment of new product initiative	5	205	0
Loss on early extinguishment of debt	0	0	11
Non-cash interest	20	22	23
Net change in assets and liabilities, excluding impact of acquisitions and dispositions:
Trade receivables	(27)	7	1
Vacation ownership contract receivables	(615)	(526)	(405)
Inventory	(27)	(71)	(26)
Prepaid expenses	(26)	(7)	5
Other assets	(17)	(16)	(10)
Accounts payable, accrued expenses, and other liabilities	(146)	(6)	(70)
Deferred income	7	11	(5)
Other, net	7	17	(24)
Net cash provided by operating activities - continuing operations	292	500	441
Net cash provided by operating activities - discontinued operations	150	486	522
Net cash provided by operating activities	442	986	963
Investing Activities
Property and equipment additions	(99)	(107)	(117)
Net assets acquired, net of cash acquired, and acquisition related payments	(5)	(48)	(21)
Proceeds from asset sales	12	6	16
Other, net	(7)	(2)	(18)
Cash used in investing activities - continuing operations	(99)	(151)	(140)
Cash used in investing activities - discontinued operations	(626)	(211)	(206)
Net cash used in investing activities	(725)	(362)	(346)
Financing Activities
Proceeds from non-recourse vacation ownership debt	2,977	2,002	2,079
Principal payments on non-recourse vacation ownership debt	(2,713)	(2,053)	(2,044)
Proceeds from debt	3,203	1,629	112
Principal payments on debt	(3,520)	(1,293)	(141)
Repayments of commercial paper, net	(147)	(280)	318
Proceeds from notes issued and term loan	300	694	325
Repayment of notes	(790)	(300)	(327)
Proceeds from vacation ownership inventory arrangements	0	0	20
Repayments of vacation ownership inventory arrangements	(12)	(41)	(26)
Dividends to shareholders	(194)	(242)	(223)
Cash transferred to Wyndham Hotels at spin-off	(476)	0	0
Repurchase of common stock	(330)	(599)	(619)
Excess tax benefits from stock-based compensation	0	0	9
Debt issuance costs	(20)	(10)	(20)
Net share settlement of incentive equity awards	(60)	(39)	(36)
Other, net	(4)	(4)	(1)
Cash used in financing activities - continuing operations	(1,786)	(536)	(574)
Cash provided by/(used in) financing activities - discontinued operations	2,066	(22)	(12)
Net cash provided by/(used in) financing activities	280	(558)	(586)
Effect of changes in exchange rates on cash, cash equivalents and restricted cash	(9)	17	(20)
Net change in cash, cash equivalents and restricted cash	(12)	83	11
Cash, cash equivalents and restricted cash, beginning of period	416	333	322
Cash, cash equivalents and restricted cash, end of period	$ 404	$ 416	$ 333