Leases - Additional Information (Detail) $ in Millions	12 Months Ended
Dec. 31, 2020 USD ($) GroundLease Contract	Dec. 31, 2019 USD ($)
Lessee Lease Description [Line Items]
Number of hotels subject to ground leases \| GroundLease	22
Operating leases information	leases and subleases contain one or more renewal options
Aggregate contingent liabilities relating to our former restaurant business	$ 3	$ 5
Minimum payments from restaurants and the Sub lessee payable to us under non-cancelable subleases	4
Maximum [Member]
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	96.00%
Ground Leases \| Lower Limit
Lessee Lease Description [Line Items]
Discount rates	4.30%
Ground Leases \| Lower Limit \| IBR
Lessee Lease Description [Line Items]
LIBOR swap rates, terms used to calculate IBR	1 year
Ground Leases \| Maximum [Member]
Lessee Lease Description [Line Items]
Discount rates	5.70%
Ground Leases \| Maximum [Member] \| 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
Office Leases \| San Diego
Lessee Lease Description [Line Items]
Lease expiration date	2021
Restaurant Sublease \| Lower Limit
Lessee Lease Description [Line Items]
Number of renewal options \| Contract	1
Minimum additional renewal option period	5 years
Restaurant Sublease \| Maximum [Member]
Lessee Lease Description [Line Items]
Minimum additional renewal option period	10 years

Lease expiration year.

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- Definition

London Interbank Offered Rate swap rates terms used to calculate incremental borrowing rate.

+ References

No definition available.

+ Details

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- Definition

Number of renewal options.

+ References

No definition available.

+ Details

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- Definition

Operating leases, contingent liability.

+ References

No definition available.

+ Details

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- Definition

Percentage of current fiscal year minimum lease payments.

+ References

No definition available.

+ Details

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- Definition

Percentage of future minimum lease payments.

+ References

No definition available.

+ Details

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- Definition

A general description of the nature of the existing leasing arrangements of a lessee for all operating leases including, but not limited to: (1) rental escalation clauses; (2) renewal or purchase options; (3) guarantees or indemnities, if any, (4) restrictions imposed by lease arrangements; (5) unusual provisions or conditions; (6) contingent rentals, if any; and (7) lease expiration dates.

+ References

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- Definition

Present value of lessee's discounted obligation for lease payments from finance lease.

+ References

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+ Details

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Balance Type:	credit
Period Type:	instant

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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- Definition

Discount rate used by lessee to determine present value of operating lease payments.

+ References

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+ Details

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- Definition

Term of lessee's operating lease renewal, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

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- Definition

Number of separate real estate development properties located on land subject to ground leases.

+ References

No definition available.

+ Details

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Balance Type:	na
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- Definition

Contractually required future rental payments receivable on noncancelable subleasing arrangements.

+ References

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+ Details

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- Details

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- Details

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- Details

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- Details

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