Organization - Additional Information (Detail) $ in Millions	1 Months Ended		3 Months Ended	9 Months Ended
	Sep. 30, 2020 USD ($)	Apr. 30, 2020 Hotel	Sep. 30, 2020 USD ($)	Sep. 30, 2020 USD ($) Hotel
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items]
Draws on credit facility				$ 2,245
COVID - 19 [Member]
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items]
Number of hotels suspends operations | Hotel		35		9
Revolving Credit Facility [Member]
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items]
Draws on credit facility			$ 746
Revolving Credit Facility [Member] | COVID - 19 [Member]
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items]
Draws on credit facility	$ 746
Host L.P.
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items]
Percentage of the common OP units	99.00%		99.00%	99.00%