Organization - Additional Information (Detail) $ in Millions	1 Months Ended	6 Months Ended		12 Months Ended
	Apr. 30, 2020 Hotel	Jun. 30, 2021 Hotel	Jun. 30, 2020 USD ($)	Dec. 31, 2020 USD ($)
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items]
Draws on credit facility			$ 1,500
COVID - 19 [Member]
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items]
Number of hotels suspends operations | Hotel	35	1
Revolving Credit Facility | COVID - 19 [Member]
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items]
Draws on credit facility				$ 1,500
Host L.P.
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items]
Percentage of the common OP units		99.00%