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Equity of Host Inc. and Capital of Host L.P. - Additional Information (Detail)
3 Months Ended
Feb. 19, 2019
$ / shares
Mar. 31, 2019
$ / shares
Dec. 31, 2018
Host L.P.      
Stockholders Equity Note [Line Items]      
Percentage of the common OP units   99.00%  
HOST HOTELS & RESORTS L.P.      
Stockholders Equity Note [Line Items]      
Shares issuable upon conversion of one common OP unit   1.021494 1.021494
Common OP units, distribution paid   $ 0.2042988  
HOST HOTELS & RESORTS, INC.      
Stockholders Equity Note [Line Items]      
Dividend declaration date Feb. 19, 2019    
Dividend per share, declared $ 0.20    
Dividend paid date Apr. 15, 2019    
Dividend record date Mar. 29, 2019