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Historical Cost and Redemption Values for Non-Controlling Interests (Detail) (HOST HOTELS & RESORTS L.P., USD $)
In Millions, except Share data
Sep. 09, 2011
Dec. 31, 2010
HOST HOTELS & RESORTS L.P.
  
Financial Instruments Subject to Mandatory Redemption by Settlement Terms [Line Items]  
OP units outstanding (millions)10,600,00010,500,000
Market price per Host Inc. common share$ 10.69$ 17.87
Shares issuable upon conversion of one OP unit1.0214941.021494
Redemption value (millions)$ 115$ 191
Historical cost (millions)104101
Book value (millions)$ 115[1]$ 191[1]
[1]The book value recorded is equal to the greater of the redemption value or the historical cost.