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Summary of Significant Accounting Policies - Additional Information (Detail)
shares in Millions, $ in Millions
 12 Months Ended
Dec. 31, 2023
USD ($)
hotel
Segment
partnership
shares
Dec. 31, 2022
USD ($)
shares
Dec. 31, 2021
USD ($)
Significant Accounting Policies [Line Items]      
Number of variable interest entity partnerships | partnership 4    
Total assets of VIE $ 12,243 $ 12,269  
Liabilities of VIE 5,417 5,390  
Advances to and investments in affiliates $ 126 132  
Percentage of property revenue allocated for renewal and replacement capital expenditures 5.00%    
Number of properties evaluated for impairment | hotel 1    
Impairment charges $ 0   $ 92
Net income (loss) $ 11 $ 9 $ (1)
Percentage greater than threshold of income tax examination minimum likelihood of tax benefits being realized upon settlement 50.00%    
Number of majority-owned partnerships that have third-party, non-controlling ownership interests that have been consolidated | partnership 1    
Number of reportable segments | Segment 1    
Philadelphia Marriott Downtown      
Significant Accounting Policies [Line Items]      
Ownership Interests 11.00% 11.00%  
RSU Awards | Vesting over one-year period      
Significant Accounting Policies [Line Items]      
Equity award vesting period 1 year    
RSU Awards | Vesting over two-year period      
Significant Accounting Policies [Line Items]      
Equity award vesting period 2 years    
RSU Awards | Vesting over three-year period      
Significant Accounting Policies [Line Items]      
Equity award vesting period 3 years    
Property, Plant and Equipment, Other Types      
Significant Accounting Policies [Line Items]      
Estimated useful lives 3 years    
Variable Interest Entities, Not Primary Beneficiary      
Significant Accounting Policies [Line Items]      
Number of variable interest entity partnerships | partnership 2    
Advances to and investments in affiliates $ 23    
Variable Interest Entities, Not Primary Beneficiary | Noble JV      
Significant Accounting Policies [Line Items]      
VIE ownership percentage 21.15%    
HOST HOTELS & RESORTS L.P.      
Significant Accounting Policies [Line Items]      
Total assets of VIE $ 12,243 $ 12,269  
Liabilities of VIE 5,417 5,390  
Advances to and investments in affiliates $ 126 $ 132  
Shares issuable upon conversion of one common OP unit (in shares) 1.021494 1.021494  
Common OP units outstanding (millions) (in shares) | shares 698.3 708.4  
HOST HOTELS & RESORTS L.P. | Redeemable Non Controlling Interests      
Significant Accounting Policies [Line Items]      
Common OP units outstanding (millions) (in shares) | shares 9.5 10.0  
Number of common shares if converted (in shares) | shares 9.7    
Houston Airport Marriott at George Bush Intercontinental | Variable Interest Entities      
Significant Accounting Policies [Line Items]      
Total assets of VIE $ 50    
Liabilities of VIE $ 27    
Houston Airport Marriott at George Bush Intercontinental | General Partner      
Significant Accounting Policies [Line Items]      
VIE ownership percentage 85.00%    
Minimum      
Significant Accounting Policies [Line Items]      
Percentage of property revenue allocated for renewal and replacement capital expenditures 4.00%    
Minimum | Noble JV      
Significant Accounting Policies [Line Items]      
Ownership Interests 21.15% 19.00%  
Minimum | Variable Interest Entities, Not Primary Beneficiary      
Significant Accounting Policies [Line Items]      
VIE ownership percentage 11.00%    
Maximum      
Significant Accounting Policies [Line Items]      
Percentage of property revenue allocated for renewal and replacement capital expenditures 5.00%    
Maximum | Noble JV      
Significant Accounting Policies [Line Items]      
Ownership Interests 49.00% 49.00%  
Maximum | Variable Interest Entities, Not Primary Beneficiary      
Significant Accounting Policies [Line Items]      
VIE ownership percentage 21.00%    
Host L.P.      
Significant Accounting Policies [Line Items]      
Investment ownership percentage 99.00%