Marriott International (MAR) 10-Q 29 Oct 14 2014 Q3 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	9 Months Ended
	Sep. 30, 2014	Oct. 17, 2014
Document and Entity Information [Abstract]	'	'
Document Type	'10-Q	'
Amendment Flag	'false	'
Document Period End Date	30-Sep-14	'
Document Fiscal Year Focus	'2014	'
Document Fiscal Period Focus	'Q3	'
Trading Symbol	'MAR	'
Entity Registrant Name	'MARRIOTT INTERNATIONAL INC /MD/	'
Entity Central Index Key	'0001048286	'
Current Fiscal Year End Date	'--12-31	'
Entity Filer Category	'Large Accelerated Filer	'
Entity Common Stock, Shares Outstanding	'	283,360,811

CONDENSED_CONSOLIDATED_STATEME

CONDENSED CONSOLIDATED STATEMENTS OF INCOME (USD $)	3 Months Ended		9 Months Ended
In Millions, except Per Share data, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
REVENUES	'	'	'	'
Base management fees	$178	$150	$509	$469
Franchise fees	203	175	560	503
Incentive management fees	67	53	220	183
Owned, leased, and other revenue	244	220	747	690
Cost reimbursements	2,768	2,562	8,201	7,720
Revenues	3,460	3,160	10,237	9,565
OPERATING COSTS AND EXPENSES	'	'	'	'
Owned, leased, and other-direct	189	172	573	532
Reimbursed costs	2,768	2,562	8,201	7,720
Depreciation, amortization, and other	33	34	116	92
General, administrative, and other	172	147	479	471
Costs and Expenses, Total	3,162	2,915	9,369	8,815
OPERATING INCOME	298	245	868	750
Gains and other income	1	1	4	14
Interest expense	-29	-28	-89	-88
Interest income	8	5	17	13
Equity in earnings (losses)	12	0	6	-2
INCOME BEFORE INCOME TAXES	290	223	806	687
Provision for income taxes	-98	-63	-250	-212
NET INCOME	$192	$160	$556	$475
EARNINGS PER SHARE-Basic	'	'	'	'
Earnings per share (in USD per share)	$0.66	$0.53	$1.90	$1.55
EARNINGS PER SHARE-Diluted	'	'	'	'
Earnings per share (in USD per share)	$0.65	$0.52	$1.86	$1.51
CASH DIVIDENDS DECLARED PER SHARE (in USD per share)	$0.20	$0.17	$0.57	$0.47

CONDENSED_CONSOLIDATED_STATEME1

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $)	3 Months Ended		9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Statement of Comprehensive Income [Abstract]	'	'	'	'
Net income	$192	$160	$556	$475
Other comprehensive income (loss):	'	'	'	'
Foreign currency translation adjustments	-18	11	-18	-2
Other derivative instrument adjustments, net of tax	3	-6	4	0
Unrealized gain on available-for-sale securities, net of tax	0	0	2	4
Reclassification of losses (gains), net of tax	1	0	3	-7
Total other comprehensive income (loss), net of tax	-14	5	-9	-5
Comprehensive income	$178	$165	$547	$470

CONDENSED_CONSOLIDATED_BALANCE

CONDENSED CONSOLIDATED BALANCE SHEETS (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Current assets	'	'
Cash and equivalents	$150	$126
Accounts and notes receivable, net	1,030	1,081
Current deferred taxes, net	207	252
Prepaid expenses	54	67
Other	111	27
Assets held for sale	0	350
Assets, Current, Total	1,552	1,903
Property and equipment, net	1,736	1,543
Intangible assets	'	'
Goodwill	894	874
Contract acquisition costs and other	1,342	1,131
Goodwill And Intangible Assets, Net, Total	2,236	2,005
Equity and cost method investments	234	222
Notes receivable, net	215	142
Deferred taxes, net	597	647
Other	277	332
Total Assets	6,847	6,794
Current liabilities	'	'
Current portion of long-term debt	7	6
Accounts payable	612	557
Accrued payroll and benefits	759	817
Liability for guest loyalty programs	657	666
Other	703	629
Liabilities, Current, Total	2,738	2,675
Long-term debt	3,521	3,147
Liability for guest loyalty programs	1,561	1,475
Other long-term liabilities	869	912
Shareholders’ deficit	'	'
Class A Common Stock	5	5
Additional paid-in-capital	2,753	2,716
Retained earnings	4,156	3,837
Treasury stock, at cost	-8,703	-7,929
Accumulated other comprehensive loss	-53	-44
Stockholders' Deficit Attributable to Parent	-1,842	-1,415
Liabilities and Deficit, Total	$6,847	$6,794

CONDENSED_CONSOLIDATED_STATEME2

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)	9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013
OPERATING ACTIVITIES	'	'
Net income	$556	$475
Adjustments to reconcile to cash provided by operating activities:	'	'
Depreciation, amortization, and other	116	92
Share-based compensation	81	89
Income taxes	83	67
Liability for guest loyalty programs	70	5
Working capital changes	-37	35
Other	81	42
Net cash provided by operating activities	950	805
INVESTING ACTIVITIES	'	'
Capital expenditures	-267	-226
Dispositions	292	0
Loan advances	-103	-5
Loan collections	26	62
Equity and cost method investments	-7	-16
Contract acquisition costs	-47	-36
Acquisition of a business, net of cash acquired	-184	0
Other	-14	-88
Net cash used in investing activities	-304	-309
FINANCING ACTIVITIES	'	'
Commercial paper/Credit Facility, net	375	268
Issuance of long-term debt	0	345
Repayment of long-term debt	-5	-405
Issuance of Class A Common Stock	129	141
Dividends paid	-167	-144
Purchase of treasury stock	-954	-644
Other	0	-1
Net cash used in financing activities	-622	-440
INCREASE IN CASH AND EQUIVALENTS	24	56
CASH AND EQUIVALENTS, beginning of period	126	88
CASH AND EQUIVALENTS, end of period	$150	$144

Basis_of_Presentation

Basis of Presentation	9 Months Ended
	Sep. 30, 2014
Organization, Consolidation and Presentation of Financial Statements [Abstract]	'
Basis of Presentation	'
	BASIS OF PRESENTATION
	The condensed consolidated financial statements present the results of operations, financial position, and cash flows of Marriott International, Inc. (“Marriott,” and together with its subsidiaries, “we,” “our,” “us,” or the “Company”). In order to make this report easier to read, we refer throughout to (i) our Condensed Consolidated Financial Statements as our “Financial Statements,” (ii) our Condensed Consolidated Statements of Income as our “Income Statements,” (iii) our Condensed Consolidated Balance Sheets as our “Balance Sheets,” (iv) our properties, brands, or markets in the United States and Canada as “North America” or “North American,” and (v) our properties, brands, or markets outside of the United States and Canada as “International.” In addition, references throughout to numbered “Footnotes” refer to the numbered Notes in these Notes to Condensed Consolidated Financial Statements, unless otherwise noted.
	During the 2014 first quarter, we modified the information that our President and Chief Executive Officer, who is our “chief operating decision maker” (“CODM”), reviews to be consistent with our continent structure. This structure aligns our business around geographic regions and is designed to enable us to operate more efficiently and to accelerate worldwide growth. We changed our operating segments to reflect this continent structure and have revised our prior period business segment information accordingly. See Footnote No. 11, “Business Segments.”
	Beginning with the 2014 first quarter, we reclassified amounts attributable to depreciation and amortization that we previously reported under the “General, administrative, and other” and “Owned, leased, and other-direct” captions of our Consolidated Statements of Income and presented these amounts in a separate “Depreciation, amortization, and other” caption. We continue to report depreciation amounts that third party owners reimburse to us under “Reimbursed costs” in our Consolidated Statements of Income. In addition, in our Consolidated Statements of Cash Flows, we reclassified depreciation that third party owners reimburse to us from the “Depreciation, amortization, and other” caption to the “Other” caption. We have reclassified the prior period amounts presented to conform to our 2014 presentation of these items.
	These Financial Statements have not been audited. We have condensed or omitted certain information and footnote disclosures normally included in financial statements presented in accordance with U.S. generally accepted accounting principles (“GAAP”). The financial statements in this report should be read in conjunction with the consolidated financial statements and notes thereto in our Annual Report on Form 10-K for the fiscal year ended December 31, 2013 (“2013 Form 10-K”). Certain terms not otherwise defined in this Form 10-Q have the meanings specified in our 2013 Form 10-K.
	Preparation of financial statements that conform with GAAP requires that we make estimates and assumptions that affect the reported amounts of assets and liabilities as of the date of the financial statements, the reported amounts of revenues and expenses during the reporting periods, and our disclosures of contingencies. We base these estimates on historical experience and on various other assumptions that we consider reasonable under the circumstances. Actual results could differ from these estimates.
	In 2013, we changed our financial reporting cycle to a calendar year-end reporting cycle and an end-of-month quarterly reporting cycle. Accordingly, our 2013 fiscal year began on December 29, 2012 (the day after the end of the 2012 fiscal year) and ended on December 31, 2013, and our 2013 quarters include the three month periods ended March 31, June 30, September 30, and December 31, except that the period ended March 31, 2013 also included December 29, 2012 through December 31, 2012.
	The table below shows the reporting periods as we refer to them in this report, their date ranges, and the number of days in each. As shown below, our 2014 first three quarters had three fewer days of activity than our 2013 first three quarters. Our 2014 fiscal year will also have three fewer days of activity than our 2013 fiscal year.
	Reporting Period	Date Range	Number of Days
	2014 third quarter	July 1, 2014 - September 30, 2014	92
	2013 third quarter	July 1, 2013 - September 30, 2013	92
	2014 first three quarters	January 1, 2014 - September 30, 2014	273
	2013 first three quarters	December 29, 2012 - September 30, 2013	276
	2014	January 1, 2014 - December 31, 2014	365
	2013	December 29, 2012 - December 31, 2013	368
	Our Financial Statements reflect all normal and recurring adjustments necessary to present fairly our financial position as of September 30, 2014, and December 31, 2013, the results of our operations for the three and nine months ended September 30, 2014, and September 30, 2013, and cash flows for the nine months ended September 30, 2014, and September 30, 2013. Interim results may not be indicative of fiscal year performance because of seasonal and short-term variations. We have eliminated all material intercompany transactions and balances between entities consolidated in these Financial Statements.
	New Accounting Standards
	Accounting Standards Update No. 2014-09 - “Revenue from Contracts with Customers” (“ASU No. 2014-09”)
	ASU No. 2014-09 supersedes the revenue recognition requirements in Topic 605, Revenue Recognition, as well as most industry-specific guidance, and significantly enhances comparability of revenue recognition practices across entities and industries by providing a principles-based, comprehensive framework for addressing revenue recognition issues. In order for a provider of promised goods or services to recognize as revenue the consideration that it expects to receive in exchange for the promised goods or services, the provider should apply the following five steps: (1) identify the contract with a customer(s); (2) identify the performance obligations in the contract; (3) determine the transaction price; (4) allocate the transaction price to the performance obligations in the contract; and (5) recognize revenue when (or as) the entity satisfies a performance obligation. ASU No. 2014-09 also specifies the accounting for some costs to obtain or fulfill a contract with a customer and provides enhanced disclosure requirements. ASU No. 2014-09 is effective for annual reporting periods beginning after December 15, 2016, including interim periods within that reporting period, which for us will be our 2017 first quarter. We are permitted to use the retrospective or modified retrospective method when adopting ASU No. 2014-09. We are still assessing the impact that ASU No. 2014-09 will have on our financial statements and disclosures.

Income_Taxes

Income Taxes	9 Months Ended
	Sep. 30, 2014
Income Tax Disclosure [Abstract]	'
Income Taxes	'
	INCOME TAXES
	Our effective tax rate increased from 28.1% to 33.9% for the three months ended September 30, 2014 primarily due to higher pre-tax earnings in the U.S. which are taxed at a higher rate, unrealized foreign exchange gains that were taxed within a foreign jurisdiction, and a favorable 2013 foreign tax true-up not recurring in 2014. Our effective tax rate increased from 30.8% to 31.0% for the nine months ended September 30, 2014 primarily as a result of higher pre-tax earnings in the U.S. which are taxed at a higher rate, unrealized foreign exchange gains that were taxed within a foreign jurisdiction, favorable benefits recognized in 2013 due to retroactive provisions of the American Taxpayer Relief Act of 2012, and other favorable 2013 foreign true-ups that did not recur in 2014. This increase in the effective tax rate for the nine months ended September 30, 2014 was partially offset by a $21 million benefit from the favorable resolution in 2014 of an issue with U.S. federal taxing authorities related to guest marketing.
	For the 2014 third quarter, our unrecognized tax benefits balance of $14 million remained unchanged from the 2014 second quarter. For the 2014 first three quarters, our unrecognized tax benefits balance decreased by $20 million from year-end 2013. The unrecognized tax benefits balance included $12 million of tax positions that, if recognized, would impact our effective tax rate.
	We file income tax returns, including returns for our subsidiaries, in various jurisdictions around the world. The Internal Revenue Service (“IRS”) has examined our federal income tax returns, and we have settled all issues for tax years through 2009. We participate in the IRS Compliance Assurance Program, which accelerates IRS examination of key transactions with the goal of resolving any issues before the taxpayer files its return. As a result, the audits of our open tax years 2010 through 2013 are complete, including all matters that could affect the Company's cash tax benefits related to our spin-off in 2011 of our timeshare operations and timeshare development business, while the 2014 tax year audit is currently ongoing. Various foreign, state, and local income tax returns are also under examination by the applicable taxing authorities.
	We paid cash for income taxes, net of refunds, of $105 million in the 2014 first three quarters and $51 million in the 2013 first three quarters.

ShareBased_Compensation

Share-Based Compensation	9 Months Ended
	Sep. 30, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]	'
Share-Based Compensation	'
	SHARE-BASED COMPENSATION
	Under our Stock and Cash Incentive Plan (the “Stock Plan”), we award: (1) stock options (our “Stock Option Program”) to purchase our Class A Common Stock (“common stock”); (2) stock appreciation rights (“SARs”) for our common stock (our “SAR Program”); (3) restricted stock units (“RSUs”) of our common stock; and (4) deferred stock units. We grant awards at exercise prices or strike prices that equal the market price of our common stock on the date of grant.
	We recorded share-based compensation expense for award grants of $28 million for the 2014 third quarter, $28 million for the 2013 third quarter, $81 million for the 2014 first three quarters, and $89 million for the 2013 first three quarters. Deferred compensation costs related to unvested awards totaled $137 million at September 30, 2014 and $108 million at December 31, 2013.
	RSUs
	We granted 1.9 million RSUs during the 2014 first three quarters to certain officers and key employees, and those units vest generally over four years in equal annual installments commencing one year after the grant date. We also granted 0.2 million performance-based RSUs (“PSUs”) during the 2014 first three quarters to certain named executive officers and their direct reports, subject to the satisfaction of certain performance conditions over, or at the end of, a three-year vesting period. RSUs, including PSUs, granted in the 2014 first three quarters had a weighted average grant-date fair value of $51.
	SARs and Stock Options
	We granted 0.3 million SARs and 0.1 million stock options to officers, key employees, and non-employee directors during the 2014 first three quarters. These SARs and options generally expire ten years after the grant date and both vest and may be exercised in cumulative installments of one quarter at the end of each of the first four years following the grant date. The weighted average grant-date fair value of SARs granted in the 2014 first three quarters was $17 and the weighted average exercise price was $53. The weighted average grant-date fair value of stock options granted in the 2014 first three quarters was $17 and the weighted average exercise price was $53.
	On the grant date, we use a binomial lattice-based valuation model to estimate the fair value of each SAR and option granted. This valuation model uses a range of possible stock price outcomes over the term of the SAR and option, discounted back to a present value using a risk-free rate. Because of the limitations with closed-form valuation models, such as the Black-Scholes model, we have determined that this more flexible binomial model provides a better estimate of the fair value of our options and SARs because it takes into account employee and non-employee director exercise behavior based on changes in the price of our stock and also allows us to use other dynamic assumptions.
	We used the following assumptions to determine the fair value of the SARs and stock options we granted during the 2014 first three quarters:
	Expected volatility	29-30%
	Dividend yield	1.14%
	Risk-free rate	2.2-2.8%
	Expected term (in years)	10-Jun
	In making these assumptions, we base expected volatility on the historical movement of Marriott's stock price. We base risk-free rates on the corresponding U.S. Treasury spot rates for the expected duration at the date of grant, which we convert to a continuously compounded rate. The dividend yield assumption takes into consideration both historical levels and expectations of future payout. The weighted average expected terms for SARs and options are an output of our valuation model which utilizes historical data in estimating the period of time that the SARs and options are expected to remain unexercised. We calculate the expected terms for SARs and options for separate groups of retirement eligible and non-retirement eligible employees and non-employee directors. Our valuation model also uses historical data to estimate exercise behaviors, which includes determining the likelihood that employees will exercise their SARs and options before expiration at a certain multiple of stock price to exercise price. In recent years, non-employee directors have generally exercised grants in their last year of exercisability.
	Other Information
	As of the end of the 2014 third quarter, we had authorized 27 million shares under the Stock Plan, including 7 million shares under the Stock Option Program and the SAR Program.

Fair_Value_of_Financial_Instru

Fair Value of Financial Instruments	9 Months Ended
	Sep. 30, 2014
Fair Value Disclosures [Abstract]	'
Fair Value of Financial Instruments	'
	FAIR VALUE OF FINANCIAL INSTRUMENTS
	We believe that the fair values of our current assets and current liabilities approximate their reported carrying amounts. We show the carrying values and the fair values of noncurrent financial assets and liabilities that qualify as financial instruments, determined under current guidance for disclosures on the fair value of financial instruments, in the following table:
		At September 30, 2014						At December 31, 2013
	($ in millions)	Carrying			Fair Value			Carrying			Fair Value
		Amount						Amount
	Senior, mezzanine, and other loans	$	215		$	216		$	142		$	145
	Marketable securities and other debt securities	44			44			111			111
	Total long-term financial assets	$	259		$	260		$	253		$	256
	Senior Notes	$	(2,188	)	$	(2,292	)	$	(2,185	)	$	(2,302	)
	Commercial paper	(1,211		)	(1,211		)	(834		)	(834		)
	Other long-term debt	(117		)	(122		)	(123		)	(124		)
	Other long-term liabilities	(57		)	(57		)	(50		)	(50		)
	Total long-term financial liabilities	$	(3,573	)	$	(3,682	)	$	(3,192	)	$	(3,310	)
	We estimate the fair value of our senior, mezzanine, and other loans, including the current portion, by discounting cash flows using risk-adjusted rates, both of which are Level 3 inputs.
	We carry our marketable securities at fair value. Our marketable securities include debt securities of the U.S. Government, its sponsored agencies and other U.S. corporations invested for our self-insurance programs, as well as shares of a publicly traded company, which we value using directly observable Level 1 inputs. The carrying value of these marketable securities at the end of our 2014 third quarter was $44 million.
	In the 2013 second quarter, we received $22 million in net cash proceeds for the sale of a portion of our shares of a publicly traded company (with an amortized cost of $14 million at the date of sale) and recognized an $8 million gain in the “Gains and other income”caption of our Income Statements. This gain included recognition of unrealized gains that we recorded in other comprehensive income as of the end of the 2013 first quarter. See Footnote No. 12, “Comprehensive Income and Shareholders' (Deficit) Equity”of the 2013 Form 10-K for additional information on our reclassification of these unrealized gains from accumulated other comprehensive income.
	We estimate the fair value of our other long-term debt, including the current portion and excluding leases, using expected future payments discounted at risk-adjusted rates, both of which are Level 3 inputs. We determine the fair value of our senior notes using quoted market prices, which are directly observable Level 1 inputs. As noted in Footnote No. 8, “Long-term Debt,” even though our commercial paper borrowings generally have short-term maturities of 30 days or less, we classify outstanding commercial paper borrowings as long-term based on our ability and intent to refinance them on a long-term basis. As we are a frequent issuer of commercial paper, we use pricing from recent transactions as Level 2 inputs in estimating fair value. At the end of the 2014 third quarter and year-end 2013, we determined that the carrying value of our commercial paper approximated its fair value due to the short maturity. Our other long-term liabilities largely consist of guarantees. As noted in Footnote No. 10, “Contingencies,” we measure our liability for guarantees at fair value on a nonrecurring basis, that is when we issue or modify a guarantee, using Level 3 internally developed inputs. At the end of the 2014 third quarter and year-end 2013, we determined that the carrying values of our guarantee liabilities approximated their fair values based on Level 3 inputs.
	See the “Fair Value Measurements” caption of Footnote No. 1, “Summary of Significant Accounting Policies” of our 2013 Form 10-K for more information on the input levels we use in determining fair value.

Earnings_Per_Share

Earnings Per Share	9 Months Ended
	Sep. 30, 2014
Earnings Per Share [Abstract]	'
Earnings Per Share	'
	EARNINGS PER SHARE
	The table below illustrates the reconciliation of the earnings and number of shares used in our calculations of basic and diluted earnings per share:
		Three Months Ended				Nine Months Ended
		September 30, 2014		September 30, 2013		September 30, 2014		September 30, 2013
	(in millions, except per share amounts)
	Computation of Basic Earnings Per Share
	Net income	$	192	$	160	$	556	$	475
	Weighted average shares outstanding	288.9		301.9		292.5		306.8
	Basic earnings per share	$	0.66	$	0.53	$	1.9	$	1.55
	Computation of Diluted Earnings Per Share
	Net income	$	192	$	160	$	556	$	475
	Weighted average shares outstanding	288.9		301.9		292.5		306.8
	Effect of dilutive securities
	Employee stock option and SARs plans	2.9		3.8		3.2		4.1
	Deferred stock incentive plans	0.7		0.8		0.7		0.8
	Restricted stock units	2.9		3		3		3.1
	Shares for diluted earnings per share	295.4		309.5		299.4		314.8
	Diluted earnings per share	$	0.65	$	0.52	$	1.86	$	1.51
	We compute the effect of dilutive securities using the treasury stock method and average market prices during the period. We have excluded antidilutive stock options and SARs from our calculation of diluted earnings per share of 0.4 million for both the 2013 third quarter and first three quarters because their exercise prices were greater than the average market prices. We had no antidilutive stock options and SARs for both the 2014 third quarter and first three quarters.

Property_and_Equipment

Property and Equipment	9 Months Ended
	Sep. 30, 2014
Property, Plant and Equipment [Abstract]	'
Property and Equipment	'
	PROPERTY AND EQUIPMENT
	The following table shows the composition of our property and equipment balances at the end of the 2014 third quarter and year-end 2013:
		At Period End
	($ in millions)	September 30,			December 31,
		2014			2013
	Land	$	541		$	535
	Buildings and leasehold improvements	771			786
	Furniture and equipment	774			789
	Construction in progress	566			338
		2,652			2,448
	Accumulated depreciation	(916		)	(905		)
		$	1,736		$	1,543
	See Footnote No. 12, “Acquisitions and Dispositions” for information on a $25 million impairment charge we recorded in the 2014 first half on three EDITION hotels in the “Depreciation, amortization, and other”caption of our Income Statements.

Notes_Receivable

Notes Receivable	9 Months Ended
	Sep. 30, 2014
Receivables [Abstract]	'
Notes Receivable	'
	NOTES RECEIVABLE
	The following table shows the composition of our notes receivable balances (net of reserves and unamortized discounts) at the end of the 2014 third quarter and year-end 2013:
		At Period End
	($ in millions)	September 30,				December 31,
		2014				2013
	Senior, mezzanine, and other loans	$	241			$	178
	Less current portion	(26		)		(36		)
		$	215			$	142
	We do not have any past due notes receivable amounts at the end of the 2014 third quarter. In the 2014 second quarter, we provided an $85 million mezzanine loan (net of a $15 million discount) to an owner in conjunction with entering into a franchise agreement for an International property. The following table shows the expected future principal payments (net of reserves and unamortized discounts) as well as interest rates for our notes receivable as of the end of the 2014 third quarter:
	Notes Receivable Principal Payments (net of reserves and unamortized discounts) and Interest Rates ($ in millions)		Amount
	2014		$	7
	2015		88
	2016		2
	2017		2
	2018		3
	Thereafter		139
	Balance at September 30, 2014		$	241
	Weighted average interest rate at September 30, 2014		6.1		%
	Range of stated interest rates at September 30, 2014		0 - 9%
	The following table shows the unamortized discounts for our notes receivable at the end of the 2014 third quarter and year-end 2013:
	Notes Receivable Unamortized Discounts ($ in millions)		Total
	Balance at year-end 2013		$	12
	Balance at September 30, 2014		$	26
	At the end of the 2014 third quarter, our recorded investment in impaired notes receivable was $108 million, and we had a $95 million reserve for credit losses, leaving $13 million of our investment in impaired loans for which we had no related allowance. At year-end 2013, our recorded investment in impaired notes receivable was $99 million, and we had a $90 million reserve for credit losses, leaving $9 million of our investment in impaired loans for which we had no related allowance. The activity related to our notes receivable reserve during the 2014 first three quarters consisted of an increase to fully reserve for recorded interest on an impaired note receivable. Our average investment in impaired notes receivable totaled $108 million for the 2014 third quarter, $104 million for the 2014 first three quarters, $104 million for the 2013 third quarter and $98 million for the 2013 first three quarters.

Longterm_Debt

Long-term Debt	9 Months Ended
	Sep. 30, 2014
Debt Disclosure [Abstract]	'
Long-Term Debt	'
	LONG-TERM DEBT
	We provide detail on our long-term debt balances in the following table as of the end of the 2014 third quarter and year-end 2013:
		At Period End
	($ in millions)	September 30,			December 31,
		2014			2013
	Senior Notes:
	Series G, interest rate of 5.8%, face amount of $316, maturing November 10, 2015	$	313		$	312
	(effective interest rate of 6.6%)(1)
	Series H, interest rate of 6.2%, face amount of $289, maturing June 15, 2016	289			289
	(effective interest rate of 6.3%)(1)
	Series I, interest rate of 6.4%, face amount of $293, maturing June 15, 2017	293			292
	(effective interest rate of 6.5%)(1)
	Series K, interest rate of 3.0%, face amount of $600, maturing March 1, 2019	596			595
	(effective interest rate of 4.4%)(1)
	Series L, interest rate of 3.3%, face amount of $350, maturing September 15, 2022	349			349
	(effective interest rate of 3.4%)(1)
	Series M, interest rate of 3.4%, face amount of $350, maturing October 15, 2020	348			348
	(effective interest rate of 3.6%)(1)
	Commercial paper, average interest rate of 0.3% at September 30, 2014	1,211			834
	$2,000 Credit Facility	—			—
	Other	129			180
		3,528			3,199
	Less current portion classified in:
	Other current liabilities (liabilities held for sale)	—			(46		)
	Current portion of long-term debt	(7		)	(6		)
		$	3,521		$	3,147
	(1)	Face amount and effective interest rate are as of September 30, 2014.
	We are a party to a multicurrency revolving credit agreement (the “Credit Facility”) that provides for $2,000 million of aggregate borrowings to support general corporate needs, including working capital, capital expenditures, share repurchases, and letters of credit. The availability of the Credit Facility also supports our commercial paper program. Borrowings under the Credit Facility generally bear interest at LIBOR (the London Interbank Offered Rate) plus a spread, based on our public debt rating. We also pay quarterly fees on the Credit Facility at a rate based on our public debt rating. While any outstanding commercial paper borrowings and/or borrowings under our Credit Facility generally have short-term maturities, we classify the outstanding borrowings as long-term based on our ability and intent to refinance the outstanding borrowings on a long-term basis. The Credit Facility expires on July 18, 2018. See the “Cash Requirements and Our Credit Facilities” caption later in this report in the “Liquidity and Capital Resources” section for information on our available borrowing capacity at September 30, 2014.
	We show future principal payments for our debt as of the end of the 2014 third quarter in the following table:
	Debt Principal Payments ($ in millions)		Amount
	2014		$	2
	2015		321
	2016		297
	2017		301
	2018		1,220
	Thereafter		1,387
	Balance at September 30, 2014		$	3,528
	All of our long-term debt is recourse to us but unsecured. We paid cash for interest, net of amounts capitalized, of $49 million in the 2014 first three quarters and $58 million in the 2013 first three quarters.
	Early in the 2014 fourth quarter, we issued $400 million aggregate principal amount of 3.1 percent Series N Notes due 2021 (the “Series N Notes”). We received net proceeds of approximately $394 million from the offering, after deducting the underwriting discount and estimated expenses. We will pay interest on the Series N Notes on April 15 and October 15 of each year, commencing on April 15, 2015. The notes will mature on October 15, 2021, and we may redeem them, in whole or in part, at our option, under the terms provided in the form of Note. We issued the Series N Notes under an indenture dated as of November 16, 1998 with The Bank of New York Mellon, as successor to JPMorgan Chase Bank, N.A., formerly known as The Chase Manhattan Bank, as trustee.

Comprehensive_Income_and_Share

Comprehensive Income and Shareholders' (Deficit) Equity	9 Months Ended
	Sep. 30, 2014
Equity [Abstract]	'
Comprehensive Income and Shareholders' (Deficit) Equity	'
	COMPREHENSIVE INCOME AND SHAREHOLDERS' (DEFICIT) EQUITY
	The following table details the accumulated other comprehensive (loss) income activity for the 2014 first three quarters:
	($ in millions)	Foreign Currency Translation Adjustments				Other Derivative Instrument Adjustments				Unrealized Gains on Available-For-Sale Securities			Accumulated Other Comprehensive (Loss) Income
	Balance at year-end 2013	$	(31	)		$	(19	)		$	6		$	(44	)
	Other comprehensive (loss) income before reclassifications (1)	(18		)		4				2			(12		)
	Amounts reclassified from accumulated other comprehensive loss	—				3				—			3
	Net other comprehensive (loss) income	(18		)		7				2			(9		)
	Balance at September 30, 2014	$	(49	)		$	(12	)		$	8		$	(53	)
	(1)	We present the portions of other comprehensive income before reclassifications for the 2014 first three quarters that relate to unrealized gains on available-for-sale securities net of $1 million of deferred taxes.
	The following table details the changes in common shares outstanding and shareholders’ deficit for the 2014 first three quarters:
	(in millions, except per share amounts)
	Common				Total				Class A			Additional				Retained			Treasury Stock,			Accumulated
	Shares								Common			Paid-in-				Earnings			at Cost			Other
	Outstanding								Stock			Capital										Comprehensive
																						(Loss) Income
	298			Balance at year-end 2013	$	(1,415	)		$	5		$	2,716			$	3,837		$	(7,929	)	$	(44	)
	—			Net income	556				—			—				556			—			—
	—			Other comprehensive income	(9		)		—			—				—			—			(9		)
	—			Cash dividends ($0.5700 per share)	(167		)		—			—				(167		)	—			—
	5.4			Employee stock plan issuance	149				—			37				(70		)	182			—
	(16.5	)		Purchase of treasury stock	(956		)		—			—				—			(956		)	—
	286.9			Balance at September 30, 2014	$	(1,842	)		$	5		$	2,753			$	4,156		$	(8,703	)	$	(53	)

Contingencies

Contingencies	9 Months Ended
	Sep. 30, 2014
Commitments and Contingencies Disclosure [Abstract]	'
Contingencies	'
	CONTINGENCIES
	Guarantees
	We issue guarantees to certain lenders and hotel owners, chiefly to obtain long-term management contracts. The guarantees generally have a stated maximum funding amount and a term of four to ten years. The terms of guarantees to lenders generally require us to fund if cash flows from hotel operations are inadequate to cover annual debt service or to repay the loan at the end of the term. The terms of the guarantees to hotel owners generally require us to fund if the hotels do not attain specified levels of operating profit. Guarantee fundings to lenders and hotel owners are generally recoverable as loans repayable to us out of future hotel cash flows and/or proceeds from the sale of hotels. We also enter into project completion guarantees with certain lenders in conjunction with hotels that we or our joint venture partners are building.
	We measure and record our liability for the fair value of a guarantee on a nonrecurring basis, that is when we issue or modify a guarantee, using Level 3 internally developed inputs. We generally base our calculation of the estimated fair value of a guarantee on the income approach or the market approach, depending on the type of guarantee. For the income approach, we use internally developed discounted cash flow and Monte Carlo simulation models that include the following assumptions, among others: projections of revenues and expenses and related cash flows based on assumed growth rates and demand trends; historical volatility of projected performance; the guaranteed obligations; and applicable discount rates. We base these assumptions on our historical data and experience, industry projections, micro and macro general economic condition projections, and our expectations. For the market approach, we use primarily market comparable data and assumptions about market capitalization rates, credit spreads, growth rates, and inflation.
	We show the maximum potential amount of our future guarantee fundings and the carrying amount of our liability for guarantees for which we are the primary obligor at September 30, 2014 in the following table:
	($ in millions)	Maximum Potential		Liability for  Guarantees
	Guarantee Type	Amount  of Future Fundings
	Debt service	$	51	$	14
	Operating profit	78		38
	Other	15		1
	Total guarantees where we are the primary obligor	$	144	$	53
	We included our liability for guarantees at September 30, 2014, for which we are the primary obligor, on our Balance Sheet in “Other long-term liabilities.”
	Of the guarantees listed in the preceding table, $13 million of debt service guarantees, $17 million of operating profit guarantees, and $1 million of other guarantees will not be in effect until the underlying properties open and we begin to operate them or certain other events occur.
	Not included in the table above is a “put option” agreement we entered into in the 2014 first quarter but which is not currently in effect with the lenders for a construction loan. In conjunction with entering into a management agreement for the Times Square EDITION hotel in New York City (currently projected to open in 2017), and the hotel's ownership group obtaining acquisition financing and entering into agreements concerning future construction financing for the mixed use project (which includes both the hotel and adjacent retail space), we agreed in the first quarter of 2014 to provide credit support to the lenders through a “put option” agreement. Under this agreement, we granted the lenders the right, upon an uncured event of default by the hotel owner under, and an acceleration of, the mortgage loan, to require us to purchase the hotel component of the property during the first two years after opening for $315 million. Because we would acquire the building upon exercise of the put option, we have not included the amount in the table above. The lenders may extend this period for up to three years to complete foreclosure if the loan has been accelerated and certain other conditions are met. We do not expect that the lenders will exercise this put option. We have no ownership interest in this hotel.
	The preceding table also does not include the following guarantees:
	•	$87 million of guarantees for Senior Living Services lease obligations of $64 million (expiring in 2018) and lifecare bonds of $23 million (estimated to expire in 2019), for which we are secondarily liable. Sunrise Senior Living, Inc. (“Sunrise”) is the primary obligor on both the leases and $4 million of the lifecare bonds; HCP, Inc., as successor by merger to CNL Retirement Properties, Inc. (“CNL”), is the primary obligor on $19 million of the lifecare bonds. Before we sold the Senior Living Services business in 2003, these were our guarantees of obligations of our then consolidated Senior Living Services subsidiaries. Sunrise and CNL have indemnified us for any fundings we may be called upon to make under these guarantees. Our liability for these guarantees had a carrying value of $3 million at September 30, 2014. In conjunction with our consent of the extension in 2011 of certain lease obligations for an additional five-year term until 2018, Sunrise provided us $1 million of cash collateral and an $85 million letter of credit issued by Key Bank to secure our exposure under the lease guarantees and certain other obligations of Sunrise. The letter of credit balance was $75 million at the end of the 2014 third quarter, which decreased as a result of lease payments made and lifecare bonds redeemed. During the extension term, Sunrise agreed to make an annual payment to us from the cash flow of the continuing lease facilities, subject to a $1 million annual minimum.
	•	Lease obligations, for which we became secondarily liable when we acquired the Renaissance Hotel Group in 1997, consisting of annual rent payments of approximately $6 million and total remaining rent payments through the initial term of approximately $28 million. Most of these obligations expire by the end of 2020. CTF Holdings Ltd. (“CTF”) had originally provided €35 million in cash collateral in the event that we are required to fund under such guarantees, approximately $4 million (€3 million) of which remained at September 30, 2014. Our exposure for the remaining rent payments through the initial term will decline to the extent that CTF obtains releases from the landlords or these hotels exit the system. Since the time we assumed these guarantees, we have not funded any amounts, and we do not expect to fund any amounts under these guarantees in the future.
	•	Certain guarantees and commitments relating to the timeshare business, which were outstanding at the time of the 2011 Timeshare spin-off and for which we became secondarily liable as part of the spin-off. These Marriott Vacations Worldwide Corporation (“MVW”) payment obligations, for which we currently have a total exposure of $13 million, relate to two guarantees. MVW has indemnified us for these obligations. At the end of the 2014 third quarter, we expect these obligations will expire as follows: $3 million in 2018, and $10 million (12 million Singapore Dollars) in 2022. We have not funded any amounts under these obligations, and do not expect to do so in the future. Our liability for these obligations had a carrying value of $1 million at September 30, 2014.
	•	A guarantee for a lease, originally entered into in 2000, for which we became secondarily liable in 2012 as a result of our sale of the ExecuStay corporate housing business to Oakwood Worldwide (“Oakwood”). Oakwood has indemnified us for the obligations under this guarantee. Our total exposure at the end of the 2014 third quarter for this guarantee is $6 million in future rent payments through the end of the lease in 2019. Our liability for this guarantee had a carrying value of $1 million at September 30, 2014.
	In addition to the guarantees described in the preceding paragraphs, in conjunction with financing obtained for specific projects or properties owned by joint ventures in which we are a party, we may provide industry standard indemnifications to the lender for loss, liability, or damage occurring as a result of the actions of the other joint venture owner or our own actions.
	Commitments and Letters of Credit
	In addition to the guarantees we note in the preceding paragraphs, as of September 30, 2014, we had the following commitments outstanding:
	•	A commitment to invest up to $8 million of equity for a non-controlling interest in a partnership that plans to purchase North American full-service and limited-service properties, or purchase or develop hotel-anchored mixed-use real estate projects. We expect to fund $2 million of this commitment in 2015. We do not expect to fund the remaining $6 million of this commitment.
	•	A commitment to invest up to $23 million of equity for non-controlling interests in a partnership that plans to purchase or develop limited-service properties in Asia. We expect to fund this commitment as follows: $3 million in 2015 and $6 million in 2016. We do not expect to fund the remaining $14 million of this commitment prior to the end of the commitment period in 2016.
	•	A commitment, with no expiration date, to invest up to $11 million in a joint venture for development of a new property. We expect to fund this commitment in 2015.
	•	A commitment to invest $7 million in the renovation of a leased hotel. We expect to fund this commitment by the end of 2014.
	•	We have a right and under certain circumstances an obligation to acquire our joint venture partner’s remaining interests in two joint ventures over the next seven years at a price based on the performance of the ventures. In conjunction with this contingent obligation, we advanced $19 million (€15 million) in deposits, $14 million (€11 million) of which is remaining. The amounts on deposit are refundable to the extent we do not acquire our joint venture partner’s remaining interests.
	•	Various commitments for the purchase of information technology hardware, software, as well as accounting, finance, and maintenance services in the normal course of business totaling $86 million. We expect to fund these commitments as follows: $64 million in 2014, $17 million in 2015, and $5 million in 2016 and thereafter. The majority of these commitments will be recovered through cost reimbursement charges to properties in our system.
	•	Several commitments aggregating $33 million with no expiration date and which we do not expect to fund.
	•	A commitment to invest up to $10 million under certain circumstances for additional mandatorily redeemable preferred equity ownership interest in an entity that owns three hotels. We may fund this commitment, which expires in 2015 subject to annual extensions through 2018; however, we have not yet determined the amount or timing of any potential funding.
	•	A $9 million loan commitment that we extended to the owner of a property to cover the cost of renovation shortfalls which we expect to fund in 2015. The commitment will expire at the end of the 2016 second quarter.
	At September 30, 2014, we had $77 million of letters of credit outstanding (all outside the Credit Facility), the majority of which were for our self-insurance programs. Surety bonds issued as of September 30, 2014, totaled $143 million, the majority of which federal, state and local governments requested in connection with our self-insurance programs.
	Legal Proceedings
	On January 19, 2010, several former Marriott employees (the “plaintiffs”) filed a putative class action complaint against us and the Stock Plan (the “defendants”), alleging that certain equity awards of deferred bonus stock granted to the plaintiffs and other current and former employees for fiscal years 1963 through 1989 are subject to vesting requirements under the Employee Retirement Income Security Act of 1974, as amended (“ERISA”), that are in certain circumstances more rapid than those set forth in the awards. The plaintiffs seek damages, attorneys' fees and interest, with no amounts specified. The action is proceeding in the United States District Court for the District of Maryland (Greenbelt Division) and Dennis Walter Bond Sr. and Michael P. Steigman are the remaining named plaintiffs. The parties completed limited discovery concerning Marriott's defense of statute of limitations with respect to Mr. Bond and Mr. Steigman and concerning class certification. We opposed plaintiffs' motion for class certification and sought summary judgment on the issue of statute of limitations in 2012. On August 9, 2013, the court denied our motion for summary judgment on the issue of statute of limitations and deferred its ruling on class certification. We moved to amend the court's judgment on our motion for summary judgment in order to certify an interlocutory appeal, which was denied. On January 7, 2014, the court denied plaintiffs' motion for class certification, and issued a Scheduling Order for full discovery of the remaining issues in this case. The parties completed full discovery and filed cross motions for summary judgment, with a final reply brief to be filed by plaintiffs by December 8, 2014, and a hearing on all motions scheduled for January 12, 2015. We and the Stock Plan have denied all liability, and while we intend to vigorously defend against the claims being made by the plaintiffs, we can give you no assurance about the outcome of this lawsuit. We currently cannot estimate the range of any possible loss to the Company because an amount of damages is not claimed, there is uncertainty as to the full impact of an adverse judgment and the possibility of our prevailing on our statute of limitations defense on appeal may significantly limit any claims for damages.
	In March 2012, the Korea Fair Trade Commission (“KFTC”) obtained documents from two of our managed hotels in Seoul, Korea in connection with an investigation which we believe is focused on pricing of hotel services within the Seoul region. Since then, the KFTC has conducted additional fact-gathering at those two hotels and also has collected information from another Marriott managed hotel located in Seoul. We understand that the KFTC also has sought documents from numerous other hotels in Seoul and other parts of Korea that we do not operate, own or franchise. We have not yet received a complaint or other legal process. We are cooperating with this investigation.

Business_Segments

Business Segments	9 Months Ended
	Sep. 30, 2014
Segment Reporting [Abstract]	'
Business Segments	'
	BUSINESS SEGMENTS
	We are a diversified global lodging company. During the 2014 first quarter, we modified the information that our President and Chief Executive Officer, who is our CODM, reviews to be consistent with our continent structure. This structure aligns our business around geographic regions and is designed to enable us to operate more efficiently and to accelerate worldwide growth. As a result of modifying our reporting information, we revised our operating segments to eliminate our former Luxury segment, which we allocated between our existing North American Full-Service operating segment, and the following four new operating segments: Asia Pacific, Caribbean and Latin America, Europe, and Middle East and Africa.
	Although our North American Full-Service and North American Limited-Service segments meet the applicable accounting criteria to be reportable business segments, our four new operating segments do not meet the criteria for separate disclosure as reportable business segments. Accordingly, we combined our four new operating segments into an “all other” category which we refer to as “International” and have revised our prior period business segment information to conform to our new business segment presentation.
	As of the end of the 2014 third quarter, our three reportable business segments include the following brands:
	•	North American Full-Service: Marriott Hotels, Marriott Conference Centers, JW Marriott, Renaissance Hotels, Renaissance ClubSport, Gaylord Hotels, The Ritz-Carlton (together with residential properties associated with some of The Ritz-Carlton hotels), and Autograph Collection properties located in the United States and Canada;
	•	North American Limited-Service: Courtyard, Fairfield Inn & Suites, SpringHill Suites, Residence Inn, and TownePlace Suites properties located in the United States and Canada;
	•	International: Marriott Hotels, JW Marriott, Renaissance Hotels, Autograph Collection, Courtyard, AC Hotels by Marriott, Fairfield Inn & Suites, Residence Inn, The Ritz-Carlton (together with residential properties associated with some of The Ritz-Carlton hotels), Bulgari Hotels & Resorts, EDITION, Protea Hotels, Moxy Hotels, and Marriott Executive Apartments properties located outside the United States and Canada.
	We evaluate the performance of our business segments based largely on the results of the segment without allocating corporate expenses, income taxes, or indirect general, administrative, and other expenses. We allocate gains and losses, equity in earnings or losses from our joint ventures, and divisional general, administrative, and other expenses to each of our segments. “Other unallocated corporate” represents a portion of our revenues, general, administrative, and other expenses, equity in earnings or losses, and other gains or losses that we do not allocate to our segments. It also includes license fees we receive from our credit card programs and license fees from MVW. Our CODM monitors assets for the consolidated company but does not use assets by business segment when assessing performance or making business segment resource allocations.
	Revenues
		Three Months Ended						Nine Months Ended
	($ in millions)	September 30, 2014			September 30, 2013			September 30, 2014			September 30, 2013
	North American Full-Service Segment	$	2,042		$	1,910		$	6,190		$	5,965
	North American Limited-Service Segment	806			690			2,223			1,957
	International Segment	546			491			1,634			1,444
	Total segment revenues	3,394			3,091			10,047			9,366
	Other unallocated corporate	66			69			190			199
		$	3,460		$	3,160		$	10,237		$	9,565
	Net Income
		Three Months Ended						Nine Months Ended
	($ in millions)	September 30, 2014			September 30, 2013			September 30, 2014			September 30, 2013
	North American Full-Service Segment	$	122		$	105		$	407		$	373
	North American Limited-Service Segment	177			131			443			372
	International Segment	62			53			201			158
	Total segment financial results	361			289			1,051			903
	Other unallocated corporate	(50		)	(43		)	(173		)	(141		)
	Interest expense and interest income	(21		)	(23		)	(72		)	(75		)
	Income taxes	(98		)	(63		)	(250		)	(212		)
		$	192		$	160		$	556		$	475
	As a result of the changes to our operating segments discussed above, in the 2014 first quarter we reallocated goodwill among our affected reporting units based on the relative fair value of each remaining or newly identified reporting unit. We also determined that the estimated fair value of each reporting unit exceeded its carrying amount. The following table shows the reclassification of goodwill we previously associated with our former Luxury segment to our North American Full-Service and International segments. The table also reflects goodwill added as a result of our acquisition of the Protea Hotel Group's brands and hotel management business in the 2014 second quarter. See Footnote No. 12, “Acquisitions and Dispositions” for more information.
	Goodwill
	($ in millions)	North American			North American			International			Former Luxury			Total
		Full-Service			Limited-Service			Segment			Segment			Goodwill
		Segment			Segment
	Year-end 2013 balance:
	Goodwill	$	335		$	125		$	298		$	170		$	928
	Accumulated impairment losses	—			(54		)	—			—			(54		)
		$	335		$	71		$	298		$	170		$	874
	Segment reclassifications	$	57		$	—		$	113		$	(170	)	$	—
	Additions	—			—			20			—			20
	September 30, 2014 balance:
	Goodwill	$	392		$	125		$	431		$	—		$	948
	Accumulated impairment losses	—			(54		)	—			—			(54		)
		$	392		$	71		$	431		$	—		$	894

Acquisitions_and_Dispositions

Acquisitions and Dispositions	9 Months Ended
	Sep. 30, 2014
Acquisitions and Dispositions [Abstract]	'
Acquisitions and Dispositions	'
		ACQUISITIONS AND DISPOSITIONS
	2014 Acquisitions
	In the 2014 second quarter, we acquired the Protea Hotel Group's brands and hotel management business (“Protea Hotels”) for $193 million (ZAR 2.046 billion) in cash and recognized approximately: $184 million (ZAR 1.943 billion) in intangible assets, consisting of deferred contract acquisition costs of $91 million (ZAR 960 million), a brand intangible of $73 million (ZAR 772 million), and goodwill of $20 million (ZAR 211 million); and $9 million (ZAR 103 million) of tangible assets consisting of property and equipment, equity method investments, and other current assets at the acquisition date. As part of the transaction, Protea Hospitality Holdings created an independent property ownership company that retained ownership of the hotels Protea Hospitality Holdings formerly owned, and entered into long-term management and lease agreements with Marriott for these hotels. The property ownership company also retained a number of minority interests in other Protea-managed hotels. As a result of the transaction, we added 113 hotels (10,016 rooms) across three brands in South Africa and six other Sub-Saharan African countries to our International segment portfolio and currently manage 45 percent, franchise 39 percent, and lease 16 percent of those rooms.
	2014 Dispositions
	In the 2014 first quarter, we sold The London EDITION to a third party, received approximately $230 million in cash, and simultaneously entered into definitive agreements to sell The Miami and The New York EDITION hotels that we are currently developing to the same third party. The total sales price for the three EDITION hotels will be approximately $816 million. We expect to sell The Miami EDITION during the fourth quarter of 2014 and The New York EDITION in the first half of 2015, when we anticipate that construction will be complete. We will retain long-term management agreements for each of the three hotels sold. We did not reclassify The Miami EDITION or The New York EDITION assets and liabilities as held for sale because the hotels are under construction and not available for immediate sale in their present condition. During the first three quarters of 2014, we evaluated the three hotels for recovery and, in the first half of 2014, recorded a $25 million impairment charge, primarily attributable to The Miami EDITION, in the “Depreciation, amortization, and other” caption of our Income Statements as our cost estimates exceed our total fixed sales price. Of the $25 million impairment charge, $15 million relates to a reallocation of costs between The Miami EDITION hotel and residential components (the residential components are not included in the sale). We did not allocate that charge to any of our segments.
	In the 2014 first quarter, we sold our right to acquire the landlord’s interest in a leased real estate property and certain attached assets of the property, consisting of $106 million (€77 million) in property and equipment and $48 million (€35 million) in liabilities. We received $62 million (€45 million) in cash and transferred $45 million (€33 million) of related obligations. We continue to operate the property under a long-term management agreement.

Policies

Policies	9 Months Ended
	Sep. 30, 2014
Accounting Policies [Abstract]	'
Fiscal Period	'
	In 2013, we changed our financial reporting cycle to a calendar year-end reporting cycle and an end-of-month quarterly reporting cycle. Accordingly, our 2013 fiscal year began on December 29, 2012 (the day after the end of the 2012 fiscal year) and ended on December 31, 2013, and our 2013 quarters include the three month periods ended March 31, June 30, September 30, and December 31, except that the period ended March 31, 2013 also included December 29, 2012 through December 31, 2012.
	The table below shows the reporting periods as we refer to them in this report, their date ranges, and the number of days in each. As shown below, our 2014 first three quarters had three fewer days of activity than our 2013 first three quarters. Our 2014 fiscal year will also have three fewer days of activity than our 2013 fiscal year.
	Reporting Period	Date Range	Number of Days
	2014 third quarter	July 1, 2014 - September 30, 2014	92
	2013 third quarter	July 1, 2013 - September 30, 2013	92
	2014 first three quarters	January 1, 2014 - September 30, 2014	273
	2013 first three quarters	December 29, 2012 - September 30, 2013	276
	2014	January 1, 2014 - December 31, 2014	365
	2013	December 29, 2012 - December 31, 2013	368
New Accounting Pronouncements	'
	New Accounting Standards
	Accounting Standards Update No. 2014-09 - “Revenue from Contracts with Customers” (“ASU No. 2014-09”)
	ASU No. 2014-09 supersedes the revenue recognition requirements in Topic 605, Revenue Recognition, as well as most industry-specific guidance, and significantly enhances comparability of revenue recognition practices across entities and industries by providing a principles-based, comprehensive framework for addressing revenue recognition issues. In order for a provider of promised goods or services to recognize as revenue the consideration that it expects to receive in exchange for the promised goods or services, the provider should apply the following five steps: (1) identify the contract with a customer(s); (2) identify the performance obligations in the contract; (3) determine the transaction price; (4) allocate the transaction price to the performance obligations in the contract; and (5) recognize revenue when (or as) the entity satisfies a performance obligation. ASU No. 2014-09 also specifies the accounting for some costs to obtain or fulfill a contract with a customer and provides enhanced disclosure requirements. ASU No. 2014-09 is effective for annual reporting periods beginning after December 15, 2016, including interim periods within that reporting period, which for us will be our 2017 first quarter. We are permitted to use the retrospective or modified retrospective method when adopting ASU No. 2014-09. We are still assessing the impact that ASU No. 2014-09 will have on our financial statements and disclosures.
Earnings Per Share Dilutive Securities	'
	We compute the effect of dilutive securities using the treasury stock method and average market prices during the period.
Guarantees	'
	We measure and record our liability for the fair value of a guarantee on a nonrecurring basis, that is when we issue or modify a guarantee, using Level 3 internally developed inputs. We generally base our calculation of the estimated fair value of a guarantee on the income approach or the market approach, depending on the type of guarantee. For the income approach, we use internally developed discounted cash flow and Monte Carlo simulation models that include the following assumptions, among others: projections of revenues and expenses and related cash flows based on assumed growth rates and demand trends; historical volatility of projected performance; the guaranteed obligations; and applicable discount rates. We base these assumptions on our historical data and experience, industry projections, micro and macro general economic condition projections, and our expectations. For the market approach, we use primarily market comparable data and assumptions about market capitalization rates, credit spreads, growth rates, and inflation.

Basis_of_Presentation_Tables

Basis of Presentation (Tables)	9 Months Ended
	Sep. 30, 2014
Organization, Consolidation and Presentation of Financial Statements [Abstract]	'
Schedule of Reporting Period Information	'
	The table below shows the reporting periods as we refer to them in this report, their date ranges, and the number of days in each. As shown below, our 2014 first three quarters had three fewer days of activity than our 2013 first three quarters. Our 2014 fiscal year will also have three fewer days of activity than our 2013 fiscal year.
	Reporting Period	Date Range	Number of Days
	2014 third quarter	July 1, 2014 - September 30, 2014	92
	2013 third quarter	July 1, 2013 - September 30, 2013	92
	2014 first three quarters	January 1, 2014 - September 30, 2014	273
	2013 first three quarters	December 29, 2012 - September 30, 2013	276
	2014	January 1, 2014 - December 31, 2014	365
	2013	December 29, 2012 - December 31, 2013	368

ShareBased_Compensation_Tables

Share-Based Compensation (Tables)	9 Months Ended
	Sep. 30, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]	'
Assumptions for Stock Options and SARs	'
	We used the following assumptions to determine the fair value of the SARs and stock options we granted during the 2014 first three quarters:
	Expected volatility	29-30%
	Dividend yield	1.14%
	Risk-free rate	2.2-2.8%
	Expected term (in years)	10-Jun

Fair_Value_of_Financial_Instru1

Fair Value of Financial Instruments (Tables)	9 Months Ended
	Sep. 30, 2014
Fair Value Disclosures [Abstract]	'
Carrying Values and Fair Values of Non-Current Financial Assets and Liabilities	'
	We show the carrying values and the fair values of noncurrent financial assets and liabilities that qualify as financial instruments, determined under current guidance for disclosures on the fair value of financial instruments, in the following table:
		At September 30, 2014						At December 31, 2013
	($ in millions)	Carrying			Fair Value			Carrying			Fair Value
		Amount						Amount
	Senior, mezzanine, and other loans	$	215		$	216		$	142		$	145
	Marketable securities and other debt securities	44			44			111			111
	Total long-term financial assets	$	259		$	260		$	253		$	256
	Senior Notes	$	(2,188	)	$	(2,292	)	$	(2,185	)	$	(2,302	)
	Commercial paper	(1,211		)	(1,211		)	(834		)	(834		)
	Other long-term debt	(117		)	(122		)	(123		)	(124		)
	Other long-term liabilities	(57		)	(57		)	(50		)	(50		)
	Total long-term financial liabilities	$	(3,573	)	$	(3,682	)	$	(3,192	)	$	(3,310	)

Earnings_Per_Share_Tables

Earnings Per Share (Tables)	9 Months Ended
	Sep. 30, 2014
Earnings Per Share [Abstract]	'
Reconciliation of the Earnings (Losses) and Number of Shares Used in Calculations of Basic and Diluted Earnings Per Share	'
	The table below illustrates the reconciliation of the earnings and number of shares used in our calculations of basic and diluted earnings per share:
		Three Months Ended				Nine Months Ended
		September 30, 2014		September 30, 2013		September 30, 2014		September 30, 2013
	(in millions, except per share amounts)
	Computation of Basic Earnings Per Share
	Net income	$	192	$	160	$	556	$	475
	Weighted average shares outstanding	288.9		301.9		292.5		306.8
	Basic earnings per share	$	0.66	$	0.53	$	1.9	$	1.55
	Computation of Diluted Earnings Per Share
	Net income	$	192	$	160	$	556	$	475
	Weighted average shares outstanding	288.9		301.9		292.5		306.8
	Effect of dilutive securities
	Employee stock option and SARs plans	2.9		3.8		3.2		4.1
	Deferred stock incentive plans	0.7		0.8		0.7		0.8
	Restricted stock units	2.9		3		3		3.1
	Shares for diluted earnings per share	295.4		309.5		299.4		314.8
	Diluted earnings per share	$	0.65	$	0.52	$	1.86	$	1.51

Property_and_Equipment_Tables

Property and Equipment (Tables)	9 Months Ended
	Sep. 30, 2014
Property, Plant and Equipment [Abstract]	'
Composition of our Property and Equipment Balances	'
	The following table shows the composition of our property and equipment balances at the end of the 2014 third quarter and year-end 2013:
		At Period End
	($ in millions)	September 30,			December 31,
		2014			2013
	Land	$	541		$	535
	Buildings and leasehold improvements	771			786
	Furniture and equipment	774			789
	Construction in progress	566			338
		2,652			2,448
	Accumulated depreciation	(916		)	(905		)
		$	1,736		$	1,543

Notes_Receivable_Tables

Notes Receivable (Tables)	9 Months Ended
	Sep. 30, 2014
Accounts, Notes, Loans and Financing Receivable [Line Items]	'
Notes Receivable Principal Payments (Net of Reserves and Unamortized Discounts) and Interest Rates	'
	The following table shows the expected future principal payments (net of reserves and unamortized discounts) as well as interest rates for our notes receivable as of the end of the 2014 third quarter:
	Notes Receivable Principal Payments (net of reserves and unamortized discounts) and Interest Rates ($ in millions)		Amount
	2014		$	7
	2015		88
	2016		2
	2017		2
	2018		3
	Thereafter		139
	Balance at September 30, 2014		$	241
	Weighted average interest rate at September 30, 2014		6.1		%
	Range of stated interest rates at September 30, 2014		0 - 9%
Notes Receivable Unamortized Discounts	'
	The following table shows the unamortized discounts for our notes receivable at the end of the 2014 third quarter and year-end 2013:
	Notes Receivable Unamortized Discounts ($ in millions)		Total
	Balance at year-end 2013		$	12
	Balance at September 30, 2014		$	26
Notes Receivable	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'
Composition of our Notes Receivable Balances (Net of Reserves and Unamortized Discounts)	'
	The following table shows the composition of our notes receivable balances (net of reserves and unamortized discounts) at the end of the 2014 third quarter and year-end 2013:
		At Period End
	($ in millions)	September 30,				December 31,
		2014				2013
	Senior, mezzanine, and other loans	$	241			$	178
	Less current portion	(26		)		(36		)
		$	215			$	142

Longterm_Debt_Tables

Long-term Debt (Tables)	9 Months Ended
	Sep. 30, 2014
Debt Disclosure [Abstract]	'
Long-Term Debt	'
	We provide detail on our long-term debt balances in the following table as of the end of the 2014 third quarter and year-end 2013:
		At Period End
	($ in millions)	September 30,			December 31,
		2014			2013
	Senior Notes:
	Series G, interest rate of 5.8%, face amount of $316, maturing November 10, 2015	$	313		$	312
	(effective interest rate of 6.6%)(1)
	Series H, interest rate of 6.2%, face amount of $289, maturing June 15, 2016	289			289
	(effective interest rate of 6.3%)(1)
	Series I, interest rate of 6.4%, face amount of $293, maturing June 15, 2017	293			292
	(effective interest rate of 6.5%)(1)
	Series K, interest rate of 3.0%, face amount of $600, maturing March 1, 2019	596			595
	(effective interest rate of 4.4%)(1)
	Series L, interest rate of 3.3%, face amount of $350, maturing September 15, 2022	349			349
	(effective interest rate of 3.4%)(1)
	Series M, interest rate of 3.4%, face amount of $350, maturing October 15, 2020	348			348
	(effective interest rate of 3.6%)(1)
	Commercial paper, average interest rate of 0.3% at September 30, 2014	1,211			834
	$2,000 Credit Facility	—			—
	Other	129			180
		3,528			3,199
	Less current portion classified in:
	Other current liabilities (liabilities held for sale)	—			(46		)
	Current portion of long-term debt	(7		)	(6		)
		$	3,521		$	3,147
	(1)	Face amount and effective interest rate are as of September 30, 2014.
Debt Principal Payments (Net of Unamortized Discounts)	'
	We show future principal payments for our debt as of the end of the 2014 third quarter in the following table:
	Debt Principal Payments ($ in millions)		Amount
	2014		$	2
	2015		321
	2016		297
	2017		301
	2018		1,220
	Thereafter		1,387
	Balance at September 30, 2014		$	3,528

Comprehensive_Income_and_Share1

Comprehensive Income and Shareholders' (Deficit) Equity (Tables)	9 Months Ended
	Sep. 30, 2014
Equity [Abstract]	'
Accumulated Other Comprehensive Income (Loss) Activity	'
	The following table details the accumulated other comprehensive (loss) income activity for the 2014 first three quarters:
	($ in millions)	Foreign Currency Translation Adjustments				Other Derivative Instrument Adjustments				Unrealized Gains on Available-For-Sale Securities			Accumulated Other Comprehensive (Loss) Income
	Balance at year-end 2013	$	(31	)		$	(19	)		$	6		$	(44	)
	Other comprehensive (loss) income before reclassifications (1)	(18		)		4				2			(12		)
	Amounts reclassified from accumulated other comprehensive loss	—				3				—			3
	Net other comprehensive (loss) income	(18		)		7				2			(9		)
	Balance at September 30, 2014	$	(49	)		$	(12	)		$	8		$	(53	)
	(1)	We present the portions of other comprehensive income before reclassifications for the 2014 first three quarters that relate to unrealized gains on available-for-sale securities net of $1 million of deferred taxes.
Changes in Shareholders' Deficit	'
	The following table details the changes in common shares outstanding and shareholders’ deficit for the 2014 first three quarters:
	(in millions, except per share amounts)
	Common				Total				Class A			Additional				Retained			Treasury Stock,			Accumulated
	Shares								Common			Paid-in-				Earnings			at Cost			Other
	Outstanding								Stock			Capital										Comprehensive
																						(Loss) Income
	298			Balance at year-end 2013	$	(1,415	)		$	5		$	2,716			$	3,837		$	(7,929	)	$	(44	)
	—			Net income	556				—			—				556			—			—
	—			Other comprehensive income	(9		)		—			—				—			—			(9		)
	—			Cash dividends ($0.5700 per share)	(167		)		—			—				(167		)	—			—
	5.4			Employee stock plan issuance	149				—			37				(70		)	182			—
	(16.5	)		Purchase of treasury stock	(956		)		—			—				—			(956		)	—
	286.9			Balance at September 30, 2014	$	(1,842	)		$	5		$	2,753			$	4,156		$	(8,703	)	$	(53	)

Contingencies_Tables

Contingencies (Tables)	9 Months Ended
	Sep. 30, 2014
Commitments and Contingencies Disclosure [Abstract]	'
Maximum Potential Amount of Future Fundings as the Primary Obligor for Guarantees and the Liability for Expected Future Fundings	'
	We show the maximum potential amount of our future guarantee fundings and the carrying amount of our liability for guarantees for which we are the primary obligor at September 30, 2014 in the following table:
	($ in millions)	Maximum Potential		Liability for  Guarantees
	Guarantee Type	Amount  of Future Fundings
	Debt service	$	51	$	14
	Operating profit	78		38
	Other	15		1
	Total guarantees where we are the primary obligor	$	144	$	53

Business_Segments_Tables

Business Segments (Tables)	9 Months Ended
	Sep. 30, 2014
Segment Reporting [Abstract]	'
Revenues	'
	Revenues
		Three Months Ended						Nine Months Ended
	($ in millions)	September 30, 2014			September 30, 2013			September 30, 2014			September 30, 2013
	North American Full-Service Segment	$	2,042		$	1,910		$	6,190		$	5,965
	North American Limited-Service Segment	806			690			2,223			1,957
	International Segment	546			491			1,634			1,444
	Total segment revenues	3,394			3,091			10,047			9,366
	Other unallocated corporate	66			69			190			199
		$	3,460		$	3,160		$	10,237		$	9,565
Net Income (Loss)	'
	Net Income
		Three Months Ended						Nine Months Ended
	($ in millions)	September 30, 2014			September 30, 2013			September 30, 2014			September 30, 2013
	North American Full-Service Segment	$	122		$	105		$	407		$	373
	North American Limited-Service Segment	177			131			443			372
	International Segment	62			53			201			158
	Total segment financial results	361			289			1,051			903
	Other unallocated corporate	(50		)	(43		)	(173		)	(141		)
	Interest expense and interest income	(21		)	(23		)	(72		)	(75		)
	Income taxes	(98		)	(63		)	(250		)	(212		)
		$	192		$	160		$	556		$	475
Goodwill	'
	Goodwill
	($ in millions)	North American			North American			International			Former Luxury			Total
		Full-Service			Limited-Service			Segment			Segment			Goodwill
		Segment			Segment
	Year-end 2013 balance:
	Goodwill	$	335		$	125		$	298		$	170		$	928
	Accumulated impairment losses	—			(54		)	—			—			(54		)
		$	335		$	71		$	298		$	170		$	874
	Segment reclassifications	$	57		$	—		$	113		$	(170	)	$	—
	Additions	—			—			20			—			20
	September 30, 2014 balance:
	Goodwill	$	392		$	125		$	431		$	—		$	948
	Accumulated impairment losses	—			(54		)	—			—			(54		)
		$	392		$	71		$	431		$	—		$	894

Basis_of_Presentation_Addition

Basis of Presentation - Additional Information (Detail)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013	Dec. 31, 2014
						Forecast
Significant Accounting Policies [Line Items]	'	'	'	'	'	'
Change in length of period from corresponding year-earlier period	'	'	'3 days	'	'	'3 days
Fiscal period duration	'92 days	'92 days	'273 days	'276 days	'368 days	'365 days

Income_Taxes_Additional_Inform

Income Taxes - Additional Information (Detail) (USD $)	3 Months Ended		9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Income Taxes [Line Items]	'	'	'	'
Effective income tax rate	28.10%	33.90%	30.80%	31.00%
Unrecognized tax benefits	$14	'	$14	'
Unrecognized tax benefits, period increase (decrease)	'	'	-20	'
Unrecognized tax benefits that, if recognized, would impact the effective tax rate	12	'	12	'
Net cash payments (receipts) for income tax (refunds)	'	'	105	51
US Federal Tax Issue	'	'	'	'
Income Taxes [Line Items]	'	'	'	'
Change in unrecognized tax benefits, amount of unrecorded benefit	$21	'	$21	'

ShareBased_Compensation_Additi

Share-Based Compensation - Additional Information (Detail) (USD $)	3 Months Ended		9 Months Ended
In Millions, except Per Share data, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'	'
Share-based compensation expense	$28	$28	$81	$89	'
Deferred compensation costs related to unvested awards	$137	'	$137	'	$108
Shares reserved under the Stock Plan	27	'	27	'	'
RSUs and Performance-based RSUs	'	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'	'
Stock awards, weighted average grant-date fair value (in USD per share)	'	'	$51	'	'
Restricted Stock Units	'	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'	'
Stock awards, granted to certain officers, key employees and, for SARS, directors (in shares)	'	'	1.9	'	'
Stock awards, vesting period	'	'	'4 years	'	'
Stock awards, percentage of award vesting and becoming exercisable annually	'	'	25.00%	'	'
Performance-based RSUs	'	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'	'
Stock awards, granted to certain officers, key employees and, for SARS, directors (in shares)	'	'	0.2	'	'
Stock awards, vesting period	'	'	'3 years	'	'
Employee stock option and SARs plans	'	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'	'
Stock awards, vesting period	'	'	'4 years	'	'
Stock awards, expiration	'	'	'10 years	'	'
Shares reserved under the Stock Plan	7	'	7	'	'
Stock Appreciation Rights	'	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'	'
Stock awards, granted to certain officers, key employees and, for SARS, directors (in shares)	'	'	0.3	'	'
Stock awards, percentage of award vesting and becoming exercisable annually	'	'	25.00%	'	'
Stock awards, weighted average grant-date fair value (in USD per share)	'	'	$17	'	'
Stock awards, weighted average exercise price (in USD per share)	'	'	$53	'	'
Employee Stock Option	'	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'	'
Stock awards, percentage of award vesting and becoming exercisable annually	'	'	25.00%	'	'
Stock awards, options granted to certain officers, key employees, and directors (in shares)	'	'	0.1	'	'
Stock awards, options, weighted average grant-date fair value (in USD per share)	'	'	$17	'	'
Stock awards, options, weighted average exercise price (in USD per share)	'	'	$53	'	'

Assumptions_for_SARs_and_Stock

Assumptions for SARs and Stock Options Granted (Detail) (Employee stock option and SARs plans)	9 Months Ended
	Sep. 30, 2014
Share based Compensation Arrangement by Share based Payment Award, Fair Value Assumptions, Method Used [Line Items]	'
Expected volatility, minimum	29.00%
Expected volatility, maximum	30.00%
Dividend yield	1.14%
Risk-free rate, minimum	2.20%
Risk-free rate, maximum	2.80%
Minimum	'
Share based Compensation Arrangement by Share based Payment Award, Fair Value Assumptions, Method Used [Line Items]	'
Expected term (in years)	'6 years
Maximum	'
Share based Compensation Arrangement by Share based Payment Award, Fair Value Assumptions, Method Used [Line Items]	'
Expected term (in years)	'10 years

Fair_Value_of_Financial_Instru2

Fair Value of Financial Instruments - Additional Information (Detail) (USD $)	6 Months Ended	9 Months Ended
In Millions, unless otherwise specified	Jun. 30, 2013	Sep. 30, 2014	Sep. 30, 2014
		Commercial Paper	Fair Value, Inputs, Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'
Carrying value of our marketable securities	'	'	$44
Proceeds from sale of investment	22	'	'
Amortized cost basis	14	'	'
Realized gain from sale of investment	$8	'	'
Commercial paper, maturity term (generally 30 days or less)	'	'30 days	'

Carrying_Values_and_Fair_Value

Carrying Values and Fair Values of Non-Current Financial Assets and Liabilities (Detail) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Senior, mezzanine, and other loans	$215	$142
Other long-term liabilities	-869	-912
Carrying Amount	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Senior, mezzanine, and other loans	215	142
Marketable securities and other debt securities	44	111
Total long-term financial assets	259	253
Senior Notes	-2,188	-2,185
Commercial paper	-1,211	-834
Other long-term debt	-117	-123
Other long-term liabilities	-57	-50
Total long-term financial liabilities	-3,573	-3,192
Fair Value	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Senior, mezzanine, and other loans	216	145
Marketable securities and other debt securities	44	111
Total long-term financial assets	260	256
Senior Notes	-2,292	-2,302
Commercial paper	-1,211	-834
Other long-term debt	-122	-124
Other long-term liabilities	-57	-50
Total long-term financial liabilities	($3,682)	($3,310)

Reconciliation_of_the_Earnings

Reconciliation of the Earnings (Losses) and Number of Shares Used in Calculations of Basic and Diluted Earnings Per Share (Detail) (USD $)	3 Months Ended		9 Months Ended
In Millions, except Per Share data, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Computation of Basic Earnings Per Share	'	'	'	'
Net income	$192	$160	$556	$475
Weighted average shares outstanding	288.9	301.9	292.5	306.8
Basic earnings per share (in USD per share)	$0.66	$0.53	$1.90	$1.55
Computation of Diluted Earnings Per Share	'	'	'	'
Net income	$192	$160	$556	$475
Weighted average shares outstanding	288.9	301.9	292.5	306.8
Effect of dilutive securities	'	'	'	'
Shares for diluted earnings per share	295.4	309.5	299.4	314.8
Diluted earnings per share (in USD per share)	$0.65	$0.52	$1.86	$1.51
Employee stock option and SARs plans	'	'	'	'
Effect of dilutive securities	'	'	'	'
Effect of dilutive securities	2.9	3.8	3.2	4.1
Deferred stock incentive plans	'	'	'	'
Effect of dilutive securities	'	'	'	'
Effect of dilutive securities	0.7	0.8	0.7	0.8
Restricted stock units	'	'	'	'
Effect of dilutive securities	'	'	'	'
Effect of dilutive securities	2.9	3	3	3.1

Earnings_Per_Share_Additional_

Earnings Per Share - Additional Information (Detail) (Employee stock option and SARs plans)	3 Months Ended		9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Employee stock option and SARs plans	'	'	'	'
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'	'	'	'
Securities not included in the calculation of diluted earnings per share (in shares)	0	0.4	0	0.4

Composition_of_our_Property_an

Composition of our Property and Equipment Balances (Detail) (USD $)

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Jun. 30, 2014

In Millions, unless otherwise specified

Land

Land

Buildings and leasehold improvements

Buildings and leasehold improvements

Furniture and equipment

Furniture and equipment

Construction in progress

Construction in progress

Other unallocated corporate

Other unallocated corporate

EDITION Hotels

EDITION Hotels

hotel

Depreciation and Amortization

Property, Plant and Equipment [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

Property and equipment, gross

$2,652

$2,448

$541

$535

$771

$786

$774

$789

$566

$338

'

'

Accumulated depreciation

-916

-905

'

'

'

'

'

'

'

'

'

'

Property and equipment, net

1,736

1,543

'

'

'

'

'

'

'

'

'

'

Impairment of long-lived assets

'

'

'

'

'

'

'

'

'

'

'

$25

Number of hotels

'

'

'

'

'

'

'

'

'

'

3

'

Composition_of_our_Notes_Recei

Composition of our Notes Receivable Balances (Net of Reserves) (Detail) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Receivables [Abstract]	'	'
Senior, mezzanine, and other loans	$241	$178
Less current portion	-26	-36
Notes receivable, noncurrent	$215	$142

Notes_Receivable_Principal_Pay

Notes Receivable Principal Payments (Net of Reserves and Unamortized Discounts) and Interest Rates (Detail) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Receivables [Abstract]	'	'
2014	$7	'
2015	88	'
2016	2	'
2017	2	'
2018	3	'
Thereafter	139	'
Senior, mezzanine, and other loans	$241	$178
Weighted average interest rate at September 30, 2014	6.10%	'
Range of stated interest rates at September 30, 2014, minimum	0.00%	'
Range of stated interest rates at September 30, 2014. maximum	9.00%	'

Notes_Receivable_Unamortized_D

Notes Receivable Unamortized Discounts (Detail) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Receivables [Abstract]	'	'
Notes receivable, unamortized discounts, balance	$26	$12

Notes_Receivable_Additional_In

Notes Receivable - Additional Information (Detail) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'	'	'	'
Notes receivable, past due	$0	'	$0	'	'
Notes receivable, unamortized discounts	26,000,000	'	26,000,000	'	12,000,000
Notes receivable reserve representing an allowance for credit losses	95,000,000	'	95,000,000	'	90,000,000
Investment in impaired loans	108,000,000	'	108,000,000	'	99,000,000
Investment in impaired loans with no related allowance for credit losses	13,000,000	'	13,000,000	'	9,000,000
Average investment in impaired loans	108,000,000	104,000,000	104,000,000	98,000,000	'
Mezzanine Loan	'	'	'	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'	'	'	'
Mezzanine loans	85,000,000	'	85,000,000	'	'
Notes receivable, unamortized discounts	$15,000,000	'	$15,000,000	'	'

LongTerm_Debt_Detail

Long-Term Debt (Detail) (USD $)	Sep. 30, 2014		Dec. 31, 2013
Debt Instrument [Line Items]	'		'
$2,000 Credit Facility	$0		$0
Other	129,000,000		180,000,000
Long-term debt	3,528,000,000		3,199,000,000
Other current liabilities (liabilities held for sale)	0		-46,000,000
Current portion of long-term debt	-7,000,000		-6,000,000
Long-term debt, noncurrent	3,521,000,000		3,147,000,000
Multicurrency revolving credit agreement, aggregate effective borrowings	2,000,000,000		'
Series G, Senior Notes 5.8% Due November 10, 2015	'		'
Debt Instrument [Line Items]	'		'
Senior Notes	313,000,000	[1]	312,000,000	[1]
Debt instrument, stated interest rate	5.80%		'
Senior Notes, face amount	316,000,000		'
Senior Notes, effective interest rate	6.60%		'
Series H, Senior Notes 6.2% Due June 15, 2016	'		'
Debt Instrument [Line Items]	'		'
Senior Notes	289,000,000	[1]	289,000,000	[1]
Debt instrument, stated interest rate	6.20%		'
Senior Notes, face amount	289,000,000		'
Senior Notes, effective interest rate	6.30%		'
Series I, Senior Notes 6.4% Due June 15, 2017	'		'
Debt Instrument [Line Items]	'		'
Senior Notes	293,000,000	[1]	292,000,000	[1]
Debt instrument, stated interest rate	6.40%		'
Senior Notes, face amount	293,000,000		'
Senior Notes, effective interest rate	6.50%		'
Series K, Senior Notes 3.0% Due March 1, 2019	'		'
Debt Instrument [Line Items]	'		'
Senior Notes	596,000,000	[1]	595,000,000	[1]
Debt instrument, stated interest rate	3.00%		'
Senior Notes, face amount	600,000,000		'
Senior Notes, effective interest rate	4.40%		'
Series L, Senior Notes 3.3% Due September 15, 2022	'		'
Debt Instrument [Line Items]	'		'
Senior Notes	349,000,000	[1]	349,000,000	[1]
Debt instrument, stated interest rate	3.30%		'
Senior Notes, face amount	350,000,000		'
Senior Notes, effective interest rate	3.40%		'
Series M Senior Notes 3.4% Due October 15, 2020	'		'
Debt Instrument [Line Items]	'		'
Senior Notes	348,000,000	[1]	348,000,000	[1]
Debt instrument, stated interest rate	3.40%		'
Senior Notes, face amount	350,000,000		'
Senior Notes, effective interest rate	3.60%		'
Commercial Paper	'		'
Debt Instrument [Line Items]	'		'
Commercial paper, average interest rate of 0.3% at September 30, 2014	$1,211,000,000		$834,000,000
Long-term debt, average interest rate	0.30%		'
[1]	Face amount and effective interest rate are as of September 30, 2014.

Longterm_Debt_Additional_Infor

Long-term Debt - Additional Information (Detail) (USD $)	9 Months Ended		0 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Oct. 09, 2014	Oct. 09, 2014
			Series N Senior Notes 3.125% Due October 15, 2021	Series N Senior Notes 3.125% Due October 15, 2021
			Subsequent Event	Subsequent Event
Debt Instrument [Line Items]	'	'	'	'
Multicurrency revolving credit agreement, aggregate effective borrowings	$2,000,000,000	'	'	'
Cash paid for interest, net of amounts capitalized	49,000,000	58,000,000	'	'
Senior Notes, face amount	'	'	'	400,000,000
Debt instrument, stated interest rate	'	'	'	3.10%
Proceeds from issuance of senior long-term debt	'	'	$394,000,000	'

Debt_Principal_Payments_Net_of

Debt Principal Payments (Net of Unamortized Discounts) (Detail) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Debt Disclosure [Abstract]	'	'
2014	$2	'
2015	321	'
2016	297	'
2017	301	'
2018	1,220	'
Thereafter	1,387	'
Long-term debt	$3,528	$3,199

Comprehensive_Income_and_Share2

Comprehensive Income and Shareholders' (Deficit) Equity Accumulated Other Comprehensive Income Activity (Detail) (USD $)	9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]	'
Balance at year-end 2013	($44)
Other comprehensive (loss) income before reclassifications	-12	[1]
Amounts reclassified from accumulated other comprehensive loss	3
Net other comprehensive (loss) income	-9
Balance at September 30, 2014	-53
Other comprehensive income (loss), before reclassifications, unrealized gains on available-for-sale securities, deferred tax	1
Foreign Currency Translation Adjustments	'
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]	'
Balance at year-end 2013	-31
Other comprehensive (loss) income before reclassifications	-18	[1]
Amounts reclassified from accumulated other comprehensive loss	0
Net other comprehensive (loss) income	-18
Balance at September 30, 2014	-49
Other Derivative Instrument Adjustments	'
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]	'
Balance at year-end 2013	-19
Other comprehensive (loss) income before reclassifications	4	[1]
Amounts reclassified from accumulated other comprehensive loss	3
Net other comprehensive (loss) income	7
Balance at September 30, 2014	-12
Unrealized Gains on Available-For-Sale Securities	'
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]	'
Balance at year-end 2013	6
Other comprehensive (loss) income before reclassifications	2	[1]
Amounts reclassified from accumulated other comprehensive loss	0
Net other comprehensive (loss) income	2
Balance at September 30, 2014	$8
[1]	We present the portions of other comprehensive income before reclassifications for the 2014 first three quarters that relate to unrealized gains on available-for-sale securities net of $1 million of deferred taxes.

Changes_in_Shareholders_Defici

Changes in Shareholders' Deficit (Detail) (USD $)	3 Months Ended		9 Months Ended
In Millions, except Per Share data, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2014	Sep. 30, 2014	Sep. 30, 2014	Sep. 30, 2014	Dec. 31, 2013
					Additional Paid-in- Capital	Retained Earnings	Treasury Stock, at Cost	Accumulated Other Comprehensive (Loss) Income	Class A Common Stock	Class A Common Stock
(Increase) Decrease in Shareholders' Deficit [Roll Forward]	'	'	'	'	'	'	'	'	'	'
Balance at year-end 2013	'	'	($1,415)	'	$2,716	$3,837	($7,929)	($44)	$5	$5
Balance at year-end 2013, shares	'	'	298	'	'	'	'	'	'	'
Net income	192	160	556	475	'	556	'	'	'	'
Other comprehensive income	-14	5	-9	-5	'	'	'	-9	'	'
Cash dividends ($0.5700 per share)	'	'	-167	'	'	-167	'	'	'	'
Employee stock plan issuance	'	'	149	'	37	-70	182	'	'	'
Employee stock plan issuance, shares	'	'	5.4	'	'	'	'	'	'	'
Purchase of treasury stock	'	'	-956	'	'	0	-956	'	'	'
Purchase of treasury stock, shares	'	'	-16.5	'	'	'	'	'	'	'
Balance at September 30, 2014	($1,842)	'	($1,842)	'	$2,753	$4,156	($8,703)	($53)	$5	$5
Balance at September 30, 2014, shares	286.9	'	286.9	'	'	'	'	'	'	'
Cash dividends, per share (in USD per share)	'	'	$0.57	'	'	'	'	'	'	'

Contingencies_Guarantees_Detai

Contingencies - Guarantees (Details)

9 Months Ended

4 Months Ended

9 Months Ended

In Millions, unless otherwise specified

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Dec. 30, 2011

Sep. 30, 2014

Sep. 30, 2014

Dec. 30, 2011

Sep. 30, 2014

Sep. 30, 2014

Sep. 09, 2005

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Lease Obligations and Debt Securities Payable

Property Lease Guarantee

Primary Obligor

Primary Obligor

Primary Obligor

Primary Obligor

Primary Obligor

Primary Obligor

Primary Obligor

Secondarily Liable

Secondarily Liable

Secondarily Liable

Secondarily Liable

Secondarily Liable

Secondarily Liable

Secondarily Liable

Secondarily Liable

Secondarily Liable

Secondarily Liable

Secondarily Liable

Secondarily Liable

Secondarily Liable

Secondarily Liable

Secondarily Liable

Secondarily Liable

New York City EDITION Hotel

USD ($)

ExecuStay

USD ($)

Debt service

Operating profit

Other guarantees

Not Yet In Effect Condition

Not Yet In Effect Condition

Not Yet In Effect Condition

USD ($)

MVW Spin-off

MVW Spin-off

MVW Spin-off

MVW Spin-off

Property Lease Guarantee

Property Lease Guarantee

Property Lease Guarantee

Property Lease Guarantee

Property Lease Guarantee

Property Lease Guarantee

Property Lease Guarantee

Debt Securities Payable

Debt Securities Payable

Debt Securities Payable

Lease is Terminated by End of 2019

Primary Obligor

USD ($)

USD ($)

USD ($)

USD ($)

Debt service

Operating profit

Other guarantees

USD ($)

Expiration in 2017

Expiration in 2022

Expiration in 2022

Sunrise Senior Living Inc

Sunrise Senior Living Inc

Sunrise Senior Living Inc

Sunrise Senior Living Inc

Renaissance Hotel Group N.V.

Renaissance Hotel Group N.V.

Renaissance Hotel Group N.V.

USD ($)

Sunrise Senior Living Inc

CNL Retirement Properties Inc

Property Lease Guarantee

Other guarantees

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

SGD

USD ($)

USD ($)

Key Bank

Key Bank

USD ($)

EUR (€)

EUR (€)

USD ($)

USD ($)

ExecuStay

USD ($)

Letter of Credit

Letter of Credit

USD ($)

USD ($)

USD ($)

Commitments and Contingencies Disclosure [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Funding guarantees, minimum term

'4 years

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Funding guarantees, maximum term

'10 years

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Liability for guarantees

'

'

'

$53

$14

$38

$1

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Maximum potential amount of future fundings

'

'

'

144

51

78

15

13

17

1

87

13

3

10

12

'

64

'

'

'

'

'

23

4

19

6

315

Guarantor obligations, term

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'2 years

Guarantor obligations, extended term

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'3 years

Guarantee obligations, carrying value

'

3

1

'

'

'

'

'

'

'

'

1

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Length of operating lease extension

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'5 years

'

'

'

'

'

'

'

'

'

'

'

Cash collateralized for lease guarantee for period from 2014 until 2018

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1

'

'

'

'

'

'

'

'

'

'

'

Letter of credit provided by Sunrise, amount available for five years

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

85

'

'

'

'

'

'

'

'

Letter of credit provided by Sunrise, amount available at period end

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

75

'

'

'

'

'

'

'

'

'

Collateral for continuing lease obligation contingency, future minimum annual payments due from 2014 until 2018

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1

'

'

'

'

'

'

'

'

'

'

'

Annual rent payments, approximately

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

6

'

'

'

'

'

'

'

Remaining rent payments, approximately

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

28

'

'

'

'

'

'

'

Guarantee obligations, cash collateralized

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$4

€ 3

€ 35

'

'

'

'

'

Contingencies_Commitments_and_

Contingencies - Commitments and Letters of Credit (Detail)

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Dec. 30, 2011

Dec. 30, 2011

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

In Millions, unless otherwise specified

USD ($)

Real Estate Investment

Renovation of Leased Hotel

Investment in Other Joint Venture Commitment

Investment in Other Joint Venture Commitment

Investment in Other Joint Venture Commitment

Investment in Other Joint Venture Commitment

Information Technology Hardware, Software, Accounting, Finance, and Maintenance Services

Commitments

Lodging Property

Outside Effective Credit Facility

Full Service and Limited Service

Full Service and Limited Service

Limited Service

Limited Service

Debt Securities

Upper Limit

USD ($)

USD ($)

EUR (€)

USD ($)

EUR (€)

USD ($)

USD ($)

USD ($)

USD ($)

Equity Investment for Non Controlling Interest in Partnership Commitment

Equity Investment for Non Controlling Interest in Partnership Commitment

Equity Investment for Non Controlling Interest in Partnership Commitment

Equity Investment for Non Controlling Interest in Partnership Commitment

Mandatorily Redeemable Preferred Equity Ownership Interest

USD ($)

Entity

Entity

USD ($)

Upper Limit

USD ($)

Upper Limit

USD ($)

USD ($)

USD ($)

hotel

Commitments and Contingencies Disclosure [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Investment commitments

'

'

'

'

'

'

'

'

'

'

'

'

$8

'

$23

$10

Investment commitments expected to be funded in 2014

'

'

7

'

'

'

'

'

'

'

'

'

'

'

'

'

Investment commitments expected to be funded in 2015

'

11

'

'

'

'

'

'

'

'

'

2

'

3

'

'

Investment commitments expected to be funded in 2016

'

'

'

'

'

'

'

'

'

'

'

'

'

6

'

'

Investment commitments not expected to be funded

'

'

'

'

'

'

'

'

33

'

'

6

'

14

'

'

Number of new joint ventures

'

'

'

2

2

'

'

'

'

'

'

'

'

'

'

'

Contingent acquisition period

'

'

'

'7 years

'7 years

'

'

'

'

'

'

'

'

'

'

'

Deposits in conjunction with contingent obligation to acquire the interest in joint ventures

'

'

'

'

'

19

15

'

'

'

'

'

'

'

'

'

Deposits in conjunction with contingent obligation to acquire the interest in joint ventures, remaining amount

'

'

'

14

11

'

'

'

'

'

'

'

'

'

'

'

Purchase commitments

'

'

'

'

'

'

'

86

'

'

'

'

'

'

'

'

Purchase commitments expected to be funded in 2014

'

'

'

'

'

'

'

64

'

'

'

'

'

'

'

'

Purchase commitments expected to be funded in 2015

'

'

'

'

'

'

'

17

'

'

'

'

'

'

'

'

Purchase commitments expected to be funded in 2016

'

'

'

'

'

'

'

5

'

'

'

'

'

'

'

'

Number of hotels included in investment commitments

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

3

Loan commitment, amount

'

'

'

'

'

'

'

'

'

9

'

'

'

'

'

'

Letters of credit outstanding

'

'

'

'

'

'

'

'

'

'

77

'

'

'

'

'

Surety bonds issued

$143

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Contingencies_Legal_Proceeding

Contingencies - Legal Proceedings (Details) (Pricing Investigation by Korea Fair Trade Commission)	Mar. 31, 2012
	hotel
Pricing Investigation by Korea Fair Trade Commission	'
Loss Contingencies [Line Items]	'
Number of hotels included in pricing investigation, managed by Company	2

Business_Segments_Additional_I

Business Segments - Additional Information (Detail)	9 Months Ended
	Sep. 30, 2014
	segment
Segment Reporting [Abstract]	'
Number of operating segments	6
Number of operating segments related to reorganization	4
Number of business segments	3

Business_Segments_Revenues_Det

Business Segments - Revenues (Detail) (USD $)	3 Months Ended		9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Segment Reporting, Revenue Reconciling Item [Line Items]	'	'	'	'
Revenues	$3,460	$3,160	$10,237	$9,565
Total segment	'	'	'	'
Segment Reporting, Revenue Reconciling Item [Line Items]	'	'	'	'
Revenues	3,394	3,091	10,047	9,366
Other unallocated corporate	'	'	'	'
Segment Reporting, Revenue Reconciling Item [Line Items]	'	'	'	'
Revenues	66	69	190	199
North American Full-Service Segment | Total segment	'	'	'	'
Segment Reporting, Revenue Reconciling Item [Line Items]	'	'	'	'
Revenues	2,042	1,910	6,190	5,965
North American Limited-Service Segment | Total segment	'	'	'	'
Segment Reporting, Revenue Reconciling Item [Line Items]	'	'	'	'
Revenues	806	690	2,223	1,957
International Segment | Total segment	'	'	'	'
Segment Reporting, Revenue Reconciling Item [Line Items]	'	'	'	'
Revenues	$546	$491	$1,634	$1,444

Business_Segments_Net_Income_L

Business Segments - Net Income (Loss) (Detail) (USD $)	3 Months Ended		9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]	'	'	'	'
Interest expense and interest income	($21)	($23)	($72)	($75)
Provision for income taxes	-98	-63	-250	-212
Net income	192	160	556	475
Total segment	'	'	'	'
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]	'	'	'	'
Segment financial results	361	289	1,051	903
Other unallocated corporate	'	'	'	'
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]	'	'	'	'
Segment financial results	-50	-43	-173	-141
North American Full-Service Segment | Total segment	'	'	'	'
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]	'	'	'	'
Segment financial results	122	105	407	373
North American Limited-Service Segment | Total segment	'	'	'	'
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]	'	'	'	'
Segment financial results	177	131	443	372
International Segment | Total segment	'	'	'	'
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]	'	'	'	'
Segment financial results	$62	$53	$201	$158

Business_Segments_Goodwill_Det

Business Segments - Goodwill (Detail) (USD $)	9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Segment Reporting Information [Line Items]	'	'
Goodwill, gross	$948	$928
Accumulated impairment losses	-54	-54
Additions	20	'
Goodwill	894	874
Reclassifications	'	'
Segment Reporting Information [Line Items]	'	'
Goodwill	0	'
North American Full-Service Segment | Total segment	'	'
Segment Reporting Information [Line Items]	'	'
Goodwill, gross	392	335
Accumulated impairment losses	0	0
Goodwill	392	335
North American Full-Service Segment | Reclassifications	'	'
Segment Reporting Information [Line Items]	'	'
Goodwill	57	'
North American Limited-Service Segment | Total segment	'	'
Segment Reporting Information [Line Items]	'	'
Goodwill, gross	125	125
Accumulated impairment losses	-54	-54
Goodwill	71	71
North American Limited-Service Segment | Reclassifications	'	'
Segment Reporting Information [Line Items]	'	'
Goodwill	0	'
International Segment | Total segment	'	'
Segment Reporting Information [Line Items]	'	'
Goodwill, gross	431	298
Accumulated impairment losses	0	0
Additions	20	'
Goodwill	431	298
International Segment | Reclassifications	'	'
Segment Reporting Information [Line Items]	'	'
Goodwill	113	'
Former Luxury Segment | Total segment	'	'
Segment Reporting Information [Line Items]	'	'
Goodwill, gross	0	170
Accumulated impairment losses	0	0
Goodwill	0	170
Former Luxury Segment | Reclassifications	'	'
Segment Reporting Information [Line Items]	'	'
Goodwill	($170)	'

Acquisitions_and_Dispositions_

Acquisitions and Dispositions - Acquisitions (Detail)	Sep. 30, 2014	Dec. 31, 2013	Jun. 30, 2014	Jun. 30, 2014	Sep. 30, 2014
In Millions, unless otherwise specified	USD ($)	USD ($)	Protea Hospitality Holdings	Protea Hospitality Holdings	Protea Hospitality Holdings
			USD ($)	ZAR	country
			room
			brand
			hotel
Business Acquisition [Line Items]	'	'	'	'	'
Cash paid for acquisition	'	'	$193	2,046	'
Intangible assets including goodwill	'	'	184	1,943	'
Deferred contract acquisition costs	'	'	91	960	'
Brand intangible	'	'	73	772	'
Goodwill	894	874	20	211	'
Tangible assets	'	'	$9	103	'
Number of hotels acquired	'	'	113	113	'
Number of hotel rooms acquired	'	'	10,016	10,016	'
Number of hotel brands	'	'	3	3	'
Number of countries in which entity operates	'	'	'	'	6
Percent of hotel rooms managed	'	'	45.00%	45.00%	'
Percent of hotel rooms franchised	'	'	39.00%	39.00%	'
Percent of hotel rooms leased	'	'	16.00%	16.00%	'

Acquisitions_and_Dispositions_1

Acquisitions and Dispositions - Dispositions (Details)	9 Months Ended		3 Months Ended		9 Months Ended	3 Months Ended	18 Months Ended	6 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Mar. 31, 2014	Mar. 31, 2014	Sep. 30, 2014	Mar. 31, 2014	Jun. 30, 2015	Jun. 30, 2014
	USD ($)	USD ($)	International Segment	International Segment	Other unallocated corporate	Other unallocated corporate	Other unallocated corporate	Other unallocated corporate
			Right to Acquire Landlord's Interest in Real Estate Property and Attached Assets	Right to Acquire Landlord's Interest in Real Estate Property and Attached Assets	EDITION Hotels	London EDITION Hotel	Forecast	Depreciation and Amortization
			USD ($)	EUR (€)	hotel	USD ($)	EDITION Hotels	EDITION Hotels
							USD ($)	USD ($)
Significant Acquisitions and Disposals [Line Items]	'	'	'	'	'	'	'	'
Proceeds from sale of property	$292	$0	'	'	'	$230	'	'
Number of hotels	'	'	'	'	3	'	'	'
Expected proceeds from sale of property	'	'	'	'	'	'	816	'
Impairment of long-lived assets	'	'	'	'	'	'	'	25
Reallocation of impairment costs	'	'	'	'	'	'	'	15
Assets, sold	'	'	106	77	'	'	'	'
Liabilities, sold	'	'	48	35	'	'	'	'
Cash proceeds from sale of rights to acquire property and attached assets	'	'	62	45	'	'	'	'
Noncash proceeds from sale of rights to acquire property and attached assets	'	'	$45	€ 33	'	'	'	'