Variable Interest Entities - Consolidated Assets and Liabilities of VIEs (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021	Mar. 31, 2021	Dec. 31, 2020
ASSETS
Buildings and improvements	$ 12,368,124	$ 12,025,271
Development costs and construction in progress	739,451	877,423
Land	2,706,909	2,603,964
Accumulated depreciation and amortization	(2,975,337)	(2,839,229)
Net real estate	12,839,147	12,667,429
Accounts receivable, net	54,106	48,691
Cash and cash equivalents	89,066	158,287	$ 34,007	$ 44,226
Intangible assets, net	497,104	519,760
Assets held for sale and discontinued operations, net	33,812	37,190
Right-of-use asset, net	232,457	233,942
Other assets, net	676,543	674,615
Total assets	15,287,250	15,257,519
Liabilities
Mortgage debt	350,713	352,081
Intangible liabilities, net	175,355	177,232
Liabilities related to assets held for sale and discontinued operations, net	14,318	15,056
Lease liability	203,988	204,547
Accounts payable, accrued liabilities, and other liabilities	695,373	755,384
Deferred revenue	817,022	789,207
Total liabilities	8,241,638	8,111,415
Consolidated Lessees VIE
ASSETS
Buildings and improvements	2,303,407	2,303,920
Development costs and construction in progress	107,066	82,303
Land	509,678	548,168
Accumulated depreciation and amortization	(569,437)	(551,097)
Net real estate	2,350,714	2,383,294
Accounts receivable, net	4,854	5,455
Cash and cash equivalents	37,080	22,295
Restricted cash	162	114
Intangible assets, net	109,993	117,180
Assets held for sale and discontinued operations, net	288	754
Right-of-use asset, net	106,600	107,993
Other assets, net	65,201	62,886
Total assets	2,674,892	2,699,971
Liabilities
Mortgage debt	144,425	144,350
Intangible liabilities, net	27,549	23,909
Liabilities related to assets held for sale and discontinued operations, net	1,677	1,677
Lease liability	98,474	99,213
Accounts payable, accrued liabilities, and other liabilities	56,712	58,440
Deferred revenue	24,405	21,546
Total liabilities	353,242	349,135
Consolidated Lessees VIE | Discontinued Operations
ASSETS
Accounts receivable, net	62	62
Cash and cash equivalents	225	59
Other assets, net	1	633
Total assets	288	754
Liabilities
Liabilities related to assets held for sale and discontinued operations, net	1,677	1,677
Total liabilities	$ 1,677	$ 1,677