Leases ASC 842 (Details) $ in Thousands, ft² in Millions	12 Months Ended
	Dec. 31, 2023 USD ($) ft²	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)
Lessor Disclosure [Abstract]
Operating Lease, Lease Income, Statement of Income or Comprehensive Income [Extensible Enumeration]	Rental and other revenues	Rental and other revenues	Rental and other revenues
Rental and other revenues related to operating lease payments	$ 819,900	$ 816,300	$ 754,900
Variable lease payments	72,900	69,800	57,300
Operating leases, scheduled future minimum payments receivable [Abstract]
2024	707,439
2025	643,857
2026	588,955
2027	527,229
2028	448,428
Thereafter	1,677,371
Operating leases, total future minimum payments receivable due	$ 4,593,279
Lessee Disclosure [Abstract]
Rentable square feet subject to ground leases (in square feet) | ft²	2.8
Weighted average remaining term of ground leases (in years)	49 years
Operating lease liability upon initial adoption	$ 35,300
Operating Lease, Liability, Statement of Financial Position [Extensible List]	Accounts Payable and Accrued Liabilities
Right of use asset upon initial adoption	$ 29,700
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	Prepaid expenses and other assets
Operating lease discount rate (in hundredths)	4.50%
Operating ground lease expense	$ 2,600	2,600	2,600
Operating ground lease payments	2,400	$ 2,400	$ 2,300
Operating ground lease liabilities, scheduled future minimum payments [Abstract]
2024	2,258
2025	2,306
2026	2,355
2027	2,407
2028	2,461
Thereafter	75,341
Operating ground lease liability, total future minimum payments	87,128
Operating lease liability discount	(54,617)
Operating lease liability	$ 32,511
Finance Lease, Liability, Statement of Financial Position [Extensible Enumeration]		Accounts Payable and Accrued Liabilities
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]		Prepaid expenses and other assets
Finance lease liability		$ 5,300
Finance lease right of use asset		$ 5,300
Finance lease discount rate (in hundredths)		2.60%
Additional right of use asset		$ 3,100