Consolidated Statements of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Operating Activities:
Net (loss) income	$ (1,444)	$ 316	$ 477
Adjustments to reconcile net (loss) income to net cash (used in) provided by operating activities:
Depreciation and amortization	298	264	277
Gain on sales of assets, net	(62)	(19)	(96)
Impairment loss and casualty (gain) loss, net	696	(18)	(1)
Equity in losses (earnings) from investments in affiliates	22	(14)	(18)
Other loss (gain), net	15	(45)	(99)
Share-based compensation expense	20	16	16
Amortization of deferred financing costs	9	5	4
Distributions from unconsolidated affiliates	5	22	18
Deferred income taxes	(30)	5	(20)
Changes in operating assets and liabilities:
Accounts receivable, net	152	(3)	(27)
Prepaid expenses	44	6	(34)
Other assets	(22)	(20)	(34)
Accounts payable and accrued expenses	(51)	(28)	(21)
Due to hotel manager	(71)	7	(4)
Other liabilities	(21)	10	14
Other	2	(5)	(8)
Net cash (used in) provided by operating activities	(438)	499	444
Investing Activities:
Acquisitions, net of cash and restricted cash acquired		(914)	(10)
Capital expenditures for property and equipment	(86)	(240)	(178)
Proceeds from asset dispositions, net	207	429	369
Proceeds from the sale of investments in affiliates, net	1	51	150
Insurance proceeds for property damage claims	1	39	88
Contributions to unconsolidated affiliates	(4)
Net cash provided by (used in) investing activities	119	(635)	419
Financing Activities:
Proceeds from issuance of Senior Secured Notes	1,376
Borrowings from credit facilities	1,000	850
Repayments of credit facilities	(1,099)	(232)
Debt issuance costs	(39)	(11)
Dividends paid	(241)	(494)	(464)
Distributions to noncontrolling interests, net	(1)	(9)	(2)
Tax withholdings on share-based compensation	(10)	(7)	(2)
Repurchase of common stock	(66)		(348)
Net cash provided by (used in) financing activities	914	97	(816)
Effect of exchange rate changes on cash and cash equivalents and restricted cash			(1)
Net increase (decrease) in cash and cash equivalents and restricted cash	595	(39)	46
Cash and cash equivalents and restricted cash, beginning of period	386	425	379
Cash and cash equivalents and restricted cash, end of period	981	$ 386	$ 425
Mortgage Debt [Member]
Financing Activities:
Repayments of mortgage debt	$ (6)