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Amount of rent expense incurred for leased assets, including but not limited to, furniture and equipment, that is not directly or indirectly associated with the manufacture, sale or creation of a product or product line.

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Amount of lease cost recognized by lessee for lease contract.

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Amount of lessee's undiscounted obligation for lease payments for operating lease.

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Amount of lessee's undiscounted obligation for lease payments for operating lease, due after fifth fiscal year following latest fiscal year.

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Amount of lessee's undiscounted obligation for lease payments for operating lease, due in fifth fiscal year following latest fiscal year.

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Amount of lessee's undiscounted obligation for lease payments for operating lease, due in third fiscal year following latest fiscal year.

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Amount of lessee's undiscounted obligation for lease payments for operating lease, due in second fiscal year following latest fiscal year.

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Amount of lessee's undiscounted obligation for lease payments for operating lease having an initial or remaining lease term in excess of one year due in remainder of fiscal year following latest fiscal year.

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Amount of lessee's undiscounted obligation for lease payments in excess of discounted obligation for lease payments for operating lease.

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

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Amount of single lease cost, calculated by allocation of remaining cost of lease over remaining lease term. Includes, but is not limited to, single lease cost, after impairment of right-of-use asset, calculated by amortization of remaining right-of-use asset and accretion of lease liability.

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

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Weighted average discount rate for operating lease calculated at point in time.

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Weighted average remaining lease term for operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Amount of sublease income excluding finance and operating lease expense.

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Amount of variable lease cost, excluded from lease liability, recognized when obligation for payment is incurred for finance and operating leases.

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Commitments and Contingencies - Lease Commitments (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2019 USD ($) property	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)
Lease Commitments
Properties subject to ground leases \| property	23
Lease Cost
Fixed lease cost	$ 31,000
Variable lease cost	16,833
Sublease income	(694)
Total operating lease cost	47,139
Lease expense		$ 47,320	$ 45,345
Cash paid for amounts included in the measurement of lease liabilities
Operating cash flows from operating leases	$ 48,519
Weighted-average remaining lease term - operating leases	35 years 7 months 6 days
Weighted-average discount rate - operating leases	4.87%
Operating Lease Liabilities
2020	$ 32,438
2021	32,440
2022	32,451
2023	32,583
2024	32,717
Thereafter	908,701
Future minimum gross lease payments	1,071,330
Impact of discounting	(554,521)
Operating lease liabilities	$ 516,809