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Historical Cost and Redemption Values for Non-Controlling Interests (Detail)
$ / shares in Units, shares in Millions, $ in Millions
Jun. 30, 2022
USD ($)
$ / shares
shares
Mar. 31, 2022
Dec. 31, 2021
USD ($)
$ / shares
shares
Shares Subject To Mandatory Redemption By Settlement Terms [Line Items]      
Book value (millions) $ 163   $ 126
HOST HOTELS & RESORTS L.P.      
Shares Subject To Mandatory Redemption By Settlement Terms [Line Items]      
Common OP units outstanding (millions) | shares 10.2   7.1
Market price per Host Inc. common share | $ / shares $ 15.68   $ 17.39
Shares issuable upon conversion of one common OP unit 1.021494 1.021494 1.021494
Redemption value (millions) $ 163   $ 126
Historical cost (millions) 100   66
Book value (millions) [1] $ 163   $ 126
[1] The book value recorded is equal to the greater of redemption value or historical cost.