Leases Lessee (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2021 USD ($) property	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)
Lessee, Lease, Description [Line Items]
Ground and Operating Lease Obligation Due	$ 953,300
Operating lease right-of-use asset	$ 474,300
Operating lease discount rate	4.57%
Number of Properties Subject to Ground Leases | property	39
Net book value for the exclusion of one ground lease related to one operating property	$ 6,900
Operating Lease Obligation Remaining Lease Term	14 years
Operating lease costs - cash rents	$ 24,700	$ 20,800	$ 17,700
Operating Lease Liabilities, Payment Due
2022	48,499
2023	22,245
2024	22,478
2025	22,500
2026	22,501
Thereafter	815,064
Total future payments under our operating leases in which we are the lessee	953,287
Effect of discounting	(518,542)
Lessee operating costs
Gross operating lease costs	28,598	23,518	19,740
Capitalized lease costs	(3,167)	(3,529)	(1,452)
Expenses for operating leases in which we are lessee	25,431	19,989	$ 18,288
Accounts Payable and Accrued Liabilities
Lessee, Lease, Description [Line Items]
Operating lease liability	434,745	345,750
Operating Lease Liabilities, Payment Due
Operating lease liability	$ 434,745	$ 345,750
Minimum
Lessee, Lease, Description [Line Items]
Remaining lease term for ground lease obligation	32 years
Maximum
Lessee, Lease, Description [Line Items]
Remaining lease term for ground lease obligation	93 years
Ground and Operating Leases
Lessee, Lease, Description [Line Items]
Weighted average remaining lease term	42 years