Number of consolidated hotel portfolio properties sold.

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- Definition

Reclassification of currency translation adjustment from accumulated other comprehensive loss to earnings on disposition of unconsolidated equity method investments.

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- Definition

The capitalized costs incurred during the period (excluded from amortization) to purchase, lease or otherwise acquire an unproved property, including costs of lease bonuses and options to purchase or lease properties, the portion of costs applicable to minerals when land including mineral rights is purchased in fee, brokers' fees, recording fees, legal costs, and other costs incurred in acquiring properties.

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This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities.

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- Definition

Amount before tax of gain (loss) recognized on the sale or disposal of a disposal group. Excludes discontinued operations.

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Amount of gain (loss) from the difference between the sale price or salvage price and the book value of an asset that was sold or retired, and gain (loss) from the write down of assets from their carrying value to fair value.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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The cash inflow associated with the amount received from the sale of a portion of the company's business, for example a segment, division, branch or other business, during the period.

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The cash outflow during the period from the repayment of aggregate short-term and long-term debt. Excludes payment of capital lease obligations.

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Amount of cash outflow for payment of an obligation from a lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements.

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Dispositions and Acquisitions - Additional Information (Detail) $ in Millions		1 Months Ended	3 Months Ended		9 Months Ended
	Jun. 30, 2021 USD ($)	Feb. 29, 2020 USD ($)	Sep. 30, 2021 USD ($) Hotel	Sep. 30, 2020 USD ($)	Sep. 30, 2021 USD ($) Hotel	Sep. 30, 2020 USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of hotel portfolio properties sold \| Hotel			5		5
Gross proceeds on sale of hotel portfolio properties					$ 477
Repayments of Lines of Credit					1,193	$ 1,099
Repayments Of Debt					18	4
Net gain (loss) on selling cost of hotel portfolio properties					(5)
Acquisition costs			$ 0	$ 9	0	10
Acquisition costs			$ 0	9	0	$ 10
Gain (loss) on sale of assets and asset impairment charges					(5)
Chesapeake Lodging Trust [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Acquisition costs				$ 9
Hilton Sao Paulo Morumbi [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Reclassification of currency translation adjustment from accumulated other comprehensive loss to earnings on disposition of hotel portfolio properties		$ 7
Hotel Adagio, Autograph Collection [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gain (loss) on sale of assets and asset impairment charges	$ (5)
Embassy Suites Washington DC Georgetown [Member] \| Hilton Sao Paulo Morumbi [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gross proceeds on sale of hotel portfolio properties		208
Net gain (loss) on selling cost of hotel portfolio properties		$ 64
Revolving Credit Facility [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Repayments of Lines of Credit					37
2019 Term Facility [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Repayments Of Debt					$ 419