CONDENSED CONSOLIDATED STATEMENTS OF INCOME - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
REVENUES
Base management fees	$ 273	$ 264
Franchise fees	417	355
Incentive management fees	155	140
Gross fee revenues	845	759
Contract investment amortization	(18)	(11)
Net fee revenues	827	748
Owned, leased, and other revenue	406	428
Cost reimbursement revenue	3,773	3,736
Revenues	5,006	4,912
OPERATING COSTS AND EXPENSES
Owned, leased, and other-direct	336	356
Depreciation, amortization, and other	54	51
General, administrative, and other	247	212
Merger-related costs and charges	34	51
Reimbursed expenses	3,835	3,696
Costs and expenses	4,506	4,366
OPERATING INCOME	500	546
Gains and other income, net	59	0
Interest expense	(75)	(70)
Interest income	5	7
Equity in earnings	13	11
INCOME BEFORE INCOME TAXES	502	494
Provision for income taxes	(104)	(123)
NET INCOME	$ 398	$ 371
EARNINGS PER SHARE
Earnings per share - basic (in USD per share)	$ 1.11	$ 0.96
Earnings per share - diluted (in USD per share)	1.09	0.95
CASH DIVIDENDS DECLARED PER SHARE (in USD per share)	$ 0.33	$ 0.30