Acquired Intangible Assets and Liabilities - Summary of Acquired Intangible Assets and Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Customer Relationship Value
Finite-Lived Intangible Assets [Line Items]
Gross amount	$ 2,930,218	$ 2,993,093
Accumulated amortization	(697,471)	(570,886)
Total	2,232,747	2,422,207
Acquired in-place lease value
Finite-Lived Intangible Assets [Line Items]
Gross amount	1,338,554	1,382,563
Accumulated amortization	(1,025,673)	(1,004,421)
Total	312,881	378,142
Other
Finite-Lived Intangible Assets [Line Items]
Gross amount	76,432	57,370
Accumulated amortization	(12,904)	(7,107)
Total	63,528	50,263
Acquired above-market leases
Finite-Lived Intangible Assets [Line Items]
Gross amount	274,365	280,216
Accumulated amortization	(248,085)	(236,923)
Total	26,280	43,293
Acquired below-market leases
Finite-Lived Intangible Assets [Line Items]
Below-market lease, gross amount	(382,237)	(401,539)
Below-market lease, accumulated amortization	269,599	270,648
Total	(112,638)	$ (130,891)
Power grid rights
Finite-Lived Intangible Assets [Line Items]
Total	$ 51,800