Business Segment Information - Schedule of Total Assets by Consolidated Hotels, Reconciled to Total Assets (Detail) - USD ($) $ in Millions	Mar. 31, 2022	Dec. 31, 2021
Segment Reporting Asset Reconciling Item [Line Items]
Total assets	$ 9,703	$ 9,743
Consolidated Hotels [Member]
Segment Reporting Asset Reconciling Item [Line Items]
Total assets	9,683	9,724
All Other [Member]
Segment Reporting Asset Reconciling Item [Line Items]
Total assets	$ 20	$ 19

Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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+ Details