Relationship with Major Customer - Additional Information (Detail) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2015 USD ($) location	Sep. 30, 2015 USD ($)	Jun. 30, 2015 USD ($)	Mar. 31, 2015 USD ($)	Dec. 31, 2014 USD ($) location	Sep. 30, 2014 USD ($)	Jun. 30, 2014 USD ($)	Mar. 31, 2014 USD ($)	Dec. 31, 2015 USD ($) location segment	Dec. 31, 2014 USD ($) location	Dec. 31, 2013 USD ($) location
Revenue, Major Customer [Line Items]
Revenues	$ 3,706	$ 3,578	$ 3,689	$ 3,513	$ 3,559	$ 3,460	$ 3,484	$ 3,293	$ 14,486	$ 13,796	$ 12,784
Number of business segments | segment									3
Host Partnerships
Revenue, Major Customer [Line Items]
Number of lodging properties operated under long-term agreements of affiliated unconsolidated partnerships | location	9				9				9	9	10
Revenues									$ 103	$ 106	$ 87
Host Hotels & Resorts Inc
Revenue, Major Customer [Line Items]
Number of lodging properties operated under long-term agreements of affiliated unconsolidated partnerships | location	58				61				58	61	66
Revenues									$ 1,888	$ 1,927	$ 2,016