Host Inc. Earnings (Loss) Per Common Share (Parenthetical) (Detail) (HOST HOTELS & RESORTS, INC.) In Millions	3 Months Ended	9 Months Ended
Sep. 09, 2011	Sep. 10, 2010	Sep. 09, 2011	Sep. 10, 2010
HOST HOTELS & RESORTS, INC.
Schedule of Earnings Per Share, Basic and Diluted, by Common Class [Line Items]
Anti-dilutive shares which were not included in the computation of diluted EPS	42	52	48	52

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

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+ Details