CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions		9 Months Ended
		Sep. 30, 2020	Sep. 30, 2019
OPERATING ACTIVITIES
Net (loss) income		$ (103)	$ 994
Adjustments to reconcile to cash provided by operating activities:
Depreciation, amortization, and other		369	207
Share-based compensation		143	138
Income taxes		(289)	(98)
Contract acquisition costs		(103)	(140)
Restructuring and merger-related charges		(40)	137
Working capital changes		127	(404)
Gain on asset dispositions		0	(15)
Deferred revenue changes and other		1,080	208
Net cash provided by operating activities		1,623	1,190
INVESTING ACTIVITIES
Capital expenditures		(97)	(235)
Dispositions		260	4
Loan advances		(36)	(23)
Loan collections		6	49
Other		(22)	(38)
Net cash provided by (used in) investing activities		111	(243)
FINANCING ACTIVITIES
Commercial paper/Credit Facility, net		(2,260)	1,177
Issuance of long-term debt		3,556	852
Repayment of long-term debt		(1,278)	(621)
Issuance of Class A Common Stock		0	7
Dividends paid		(156)	(455)
Purchase of treasury stock		(150)	(1,828)
Share-based compensation withholding taxes		(100)	(132)
Other		(9)	(7)
Net cash used in financing activities		(397)	(1,007)
INCREASE (DECREASE) IN CASH, CASH EQUIVALENTS, AND RESTRICTED CASH		1,337	(60)
CASH, CASH EQUIVALENTS, AND RESTRICTED CASH, beginning of period	[1]	253	360
CASH, CASH EQUIVALENTS, AND RESTRICTED CASH, end of period	[1]	1,590	300
Liability for guest loyalty program
Adjustments to reconcile to cash provided by operating activities:
Liability for guest loyalty program		$ 439	$ 163

[1] The 2020 amounts include beginning restricted cash of $28 million at December 31, 2019, and ending restricted cash of $13 million at September 30, 2020, which we present in the “Prepaid expenses and other” and “Other noncurrent assets” captions of our Balance Sheets.