CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
OPERATING ACTIVITIES
Net income	$ 536	$ 657
Adjustments to reconcile to cash provided by operating activities:
Depreciation, amortization, and other	97	107
Share-based compensation	117	84
Income taxes	1	120
Liability for guest loyalty programs	179	119
Merger-related charges	172	0
Working capital changes	(47)	(77)
Other	77	70
Net cash provided by operating activities	1,132	1,080
INVESTING ACTIVITIES
Acquisition of a business, net of cash acquired	(2,412)	(137)
Capital expenditures	(132)	(218)
Dispositions	53	612
Loan advances	(24)	(12)
Loan collections	61	21
Contract acquisition costs	(55)	(89)
Redemption of debt security	0	121
Other	22	75
Net cash (used in) provided by investing activities	(2,487)	373
FINANCING ACTIVITIES
Commercial paper/Credit Facility, net	1,657	(274)
Issuance of long-term debt	1,483	790
Repayment of long-term debt	(296)	(7)
Issuance of Class A Common Stock	22	39
Dividends paid	(257)	(189)
Purchase of treasury stock	(248)	(1,821)
Other	(24)	0
Net cash provided by (used in) financing activities	2,337	(1,462)
INCREASE (DECREASE) IN CASH AND EQUIVALENTS	982	(9)
CASH AND EQUIVALENTS, beginning of period	96	104
CASH AND EQUIVALENTS, end of period	$ 1,078	$ 95