Supplemental Schedule of Noncash Investing and Financing Activities (HOST HOTELS & RESORTS, L.P.) - Additional Information (Detail) - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Other Significant Noncash Transactions [Line Items]
Redemptions of limited partner interests for common stock	$ 15	$ 6	$ 10
Redemptions of limited partner interests for common stock (shares)	0.7	0.3	0.6
HOST HOTELS & RESORTS L.P.
Other Significant Noncash Transactions [Line Items]
Redemptions of limited partner interests for common stock	$ 15	$ 6	$ 10
Redemptions of limited partner interests for common stock (shares)	0.7	0.3	0.6