CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2018		Dec. 31, 2017
OPERATING ACTIVITIES
Net income		$ 1,907		$ 1,459
Adjustments to reconcile to cash provided by operating activities:
Depreciation, amortization, and other		284		279
Share-based compensation		184		181
Income taxes		(239)		887
Contract acquisition costs		(152)		(185)
Merger-related charges		16		(124)
Working capital changes		(76)		(30)
(Gain) loss on asset dispositions		(194)		(687)
Other		107		149
Net cash provided by operating activities		2,357		2,227
INVESTING ACTIVITIES
Acquisition of a business, net of cash acquired		0		0
Capital expenditures		(556)		(240)
Dispositions		479		1,418
Loan advances		(13)		(93)
Loan collections		48		187
Other		(10)		(61)
Net cash (used in) provided by investing activities		(52)		1,211
FINANCING ACTIVITIES
Commercial paper/Credit Facility, net		(129)		60
Issuance of long-term debt		1,646		0
Repayment of long-term debt		(397)		(310)
Issuance of Class A Common Stock		4		6
Dividends paid		(543)		(482)
Purchase of treasury stock		(2,850)		(3,013)
Share-based compensation withholding taxes		(105)		(157)
Other		0		0
Net cash (used in) provided by financing activities		(2,374)		(3,896)
DECREASE IN CASH, CASH EQUIVALENTS, AND RESTRICTED CASH		(69)		(458)
CASH, CASH EQUIVALENTS, AND RESTRICTED CASH, beginning of period		429	[1]	887
CASH, CASH EQUIVALENTS, AND RESTRICTED CASH, end of period	[1]	360		429
Restricted cash		44		46
Guest loyalty program
Adjustments to reconcile to cash provided by operating activities:
Liability for guest loyalty program		$ 520		$ 298

[1] The 2018 amounts include beginning restricted cash of $46 million at December 31, 2017, and ending restricted cash of $44 million at December 31, 2018, which we present in the “Prepaid expenses and other” and “Other noncurrent assets” captions of our Balance Sheets.