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Income Taxes - Additional Information (Detail) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Income Taxes [Line Items]      
Number of subsequent years we may not able to qualify as REIT if failed to qualify for taxation as a REIT in any taxable year 4 years    
Valuation allowance as a percentage 100.00%    
Valuation allowance $ 18 $ 18  
Net increase or decrease in valuation allowance 0    
Total deferred tax assets, net of valuation allowance $ 222 250  
Proceeds from income tax refunds   $ (19) $ (34)
Statutory federal income tax rate 21.00% 21.00%  
Recognized material interest or penalties $ 0 $ 0 0
Income tax provision 36 26 $ (91)
Cash paid for income taxes, net of refunds received 12    
Unrecognized tax benefits 1 $ 1  
U.S. Federal | AOCI Foreign Exchange Net Loss      
Income Taxes [Line Items]      
Valuation allowance 5    
U.S. Federal | Capital loss      
Income Taxes [Line Items]      
Valuation allowance 8    
Foreign Tax Authority | Net Operating Loss and Capital Loss Carryover      
Income Taxes [Line Items]      
Valuation allowance $ 5    
Lower Limit      
Income Taxes [Line Items]      
Percentage of annual taxable income Host Inc is required to distribute 90.00%