CONDENSED CONSOLIDATED STATEMENTS OF INCOME (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
REVENUES
Base management fees	$ 176	$ 166	$ 331	$ 319
Franchise fees	194	177	357	328
Incentive management fees	82	64	153	130
Owned, leased, and other revenue	269	246	503	470
Cost reimbursements	2,763	2,610	5,433	5,158
Revenues	3,484	3,263	6,777	6,405
OPERATING COSTS AND EXPENSES
Owned, leased, and other-direct	199	181	384	360
Reimbursed costs	2,763	2,610	5,433	5,158
Depreciation, amortization, and other	47	33	83	58
General, administrative, and other	159	160	307	324
Costs and Expenses, Total	3,168	2,984	6,207	5,900
OPERATING INCOME	316	279	570	505
Gains and other income	3	10	3	13
Interest expense	(30)	(29)	(60)	(60)
Interest income	4	5	9	8
Equity in losses	(8)	(2)	(6)	(2)
INCOME BEFORE INCOME TAXES	285	263	516	464
Provision for income taxes	(93)	(84)	(152)	(149)
NET INCOME	$ 192	$ 179	$ 364	$ 315
EARNINGS PER SHARE-Basic
Earnings per share (in USD per share)	$ 0.66	$ 0.58	$ 1.24	$ 1.02
EARNINGS PER SHARE-Diluted
Earnings per share (in USD per share)	$ 0.64	$ 0.57	$ 1.21	$ 0.99
CASH DIVIDENDS DECLARED PER SHARE (in USD per share)	$ 0.20	$ 0.17	$ 0.37	$ 0.30