Leases - Lessor (Details) $ in Thousands, ft² in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021 USD ($) ft²	Sep. 30, 2020 USD ($)	Sep. 30, 2021 USD ($) ft²	Sep. 30, 2020 USD ($)	Dec. 31, 2020 USD ($)	Jan. 01, 2020 USD ($)
Operating Lease
Lessee option to purchase underlying asset			30
Rent commence date			Oct. 01, 2017
Land parcel subject to lease agreement that contains a purchase option	2		2
Operating Leases, Future Minimum Payments Receivable
2021	$ 361,351		$ 361,351
2022	1,508,991		1,508,991
2023	1,542,593		1,542,593
2024	1,481,732		1,481,732
2025	1,383,973		1,383,973
Thereafter	8,987,517		8,987,517
Total	15,266,157		15,266,157
Direct Financing and Sales-Type Lease
Net investment in direct financing and sales-type leases	38,400		$ 38,400
Direct financing lease, remaining lease term			71 years 2 months 12 days
Lessee option to purchase underlying asset			30
Net investment in sales-type lease	32,000		$ 32,000
Sales-type lease, remaining lease term			88 years 2 months 12 days
Direct financing lease, allowance for credit loss	2,800		$ 2,800			$ 2,200
Sales-type lease, allowance for credit loss	0		0
Direct Financing Lease, Net Investment in Leases
Gross investment in direct financing and sales-type leases	404,143		404,143		$ 258,751
Add: estimated unguaranteed residual value of the underlying assets	31,839		31,839		0
Less: unearned income on direct financing lease	(216,190)		(216,190)		(218,072)
Less: effect of discounting on sales-type leases	(146,557)		(146,557)		0
Less: allowance for credit losses	(2,839)		(2,839)		(2,839)
Net investment in direct financing and sales-type leases	70,396		70,396		37,840
Direct Financing and Sales-Type Leases, Future Minimum Payments Receivable
2021	755		755
2022	3,066		3,066
2023	3,120		3,120
2024	3,176		3,176
2025	3,371		3,371
Thereafter	390,655		390,655
Total	404,143		404,143		$ 258,751
Income from rentals
Operating leases	538,880	$ 539,001	1,515,396	$ 1,398,084
Direct financing and sales-type leases	1,012	619	2,473	1,847
Revenues subject to the lease accounting standard	539,892	539,620	1,517,869	1,399,931
Income from rentals	$ 547,759	545,042	$ 1,537,227	1,421,917
Minimum
Operating Lease
Lessee option to purchase underlying asset			15
Direct Financing and Sales-Type Lease
Lessee option to purchase underlying asset			15
Maximum
Operating Lease
Lessee option to purchase underlying asset			74.5
Direct Financing and Sales-Type Lease
Lessee option to purchase underlying asset			74.5
Land parcels subject to lease agreement that contains a purchase option
Operating Lease
Remaining lease term			71 years 2 months 12 days
North America
Lessor, Lease, Description [Line Items]
Number of real estate properties	407		407
Area of real estate property | ft²	38.7		38.7
Income from rentals
Income from rentals
Income from rentals	$ 546,527	543,412	$ 1,533,593	1,416,873
Income from rentals | Cumulative Effect, Period of Adoption, Adjustment
Income from rentals
Revenues subject to the revenue recognition accounting standard	$ 6,635	$ 3,792	$ 15,724	$ 16,942