Leases - Additional Information (Detail) $ in Millions	12 Months Ended
	Dec. 31, 2021 USD ($) GroundLease Contract	Dec. 31, 2020 USD ($)
Lessee Lease Description [Line Items]
Number of hotels subject to ground leases | GroundLease	19
Operating leases information	leases and subleases contain one or more renewal options
Aggregate contingent liabilities relating to our former restaurant business	$ 2	$ 3
Finance Lease, Liability, Statement of Financial Position [Extensible Enumeration]	Other Borrowings
Minimum payments from restaurants and the Sub lessee payable to us under non-cancelable subleases	$ 4
Maximum
Lessee Lease Description [Line Items]
Financial leases	$ 1	$ 1
Ground Leases
Lessee Lease Description [Line Items]
Percentage of 2019 minimum lease payments	73.00%
Percentage of total future minimum lease payments	95.00%
Ground Leases | Lower Limit
Lessee Lease Description [Line Items]
Discount rates	4.30%
Ground Leases | Maximum
Lessee Lease Description [Line Items]
Discount rates	5.70%
Ground Leases | Maximum | IBR
Lessee Lease Description [Line Items]
LIBOR swap rates, terms used to calculate IBR	50 years
Office Leases | Bethesda
Lessee Lease Description [Line Items]
Lease expiration date	2036
Office Leases | Miami
Lessee Lease Description [Line Items]
Lease expiration date	2022
Restaurant Sublease | Lower Limit
Lessee Lease Description [Line Items]
Number of renewal options | Contract	1