Investments - Summary of Owned Real Estate Activity (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023 USD ($) Property	Sep. 30, 2022 USD ($)	Sep. 30, 2023 USD ($) Property	Sep. 30, 2022 USD ($)
Real Estate Activity
Impairments	$ 19,258	$ 1,571	$ 36,052	$ 11,096
Ending balance	9,400,000		9,400,000
Net balance	$ 7,819,878		$ 7,819,878
Held in Use
Number of Properties
Beginning balance (in properties) | Property			2,098
Acquisitions/improvements (in properties) | Property			30
Dispositions of real estate (in properties) | Property			(63)
Transfers to Held for Sale (in properties) | Property			(69)
Transfers from Held for Sale (in properties) | Property			2
Impairments (in properties) | Property			0
Reset of gross balances (in properties) | Property			0
Ending balance (in properties) | Property	1,998		1,998
Real Estate Activity
Beginning balance			$ 9,122,163
Acquisitions			497,876
Dispositions			(138,326)
Transfers to Held for Sale			(146,491)
Transfers from Held for Sale			3,675
Impairments			(10,738)
Reset of gross balances			(21,595)
Ending balance	$ 9,306,564		9,306,564
Accumulated depreciation and amortization	(1,548,231)		(1,548,231)
Net balance	$ 7,758,333		$ 7,758,333
Held for Sale
Number of Properties
Beginning balance (in properties) | Property			17
Acquisitions/improvements (in properties) | Property			0
Dispositions of real estate (in properties) | Property			(45)
Transfers to Held for Sale (in properties) | Property			69
Transfers from Held for Sale (in properties) | Property			(2)
Impairments (in properties) | Property			0
Reset of gross balances (in properties) | Property			0
Ending balance (in properties) | Property	39		39
Real Estate Activity
Beginning balance			$ 61,581
Acquisitions			0
Dispositions			(112,526)
Transfers to Held for Sale			146,491
Transfers from Held for Sale			(3,675)
Impairments			(8,593)
Reset of gross balances			(4,748)
Ending balance	$ 78,530		78,530
Accumulated depreciation and amortization	(16,985)		(16,985)
Net balance	$ 61,545		$ 61,545
Total
Number of Properties
Beginning balance (in properties) | Property			2,115
Acquisitions/improvements (in properties) | Property			30
Dispositions of real estate (in properties) | Property			(108)
Transfers to Held for Sale (in properties) | Property			0
Transfers from Held for Sale (in properties) | Property			0
Impairments (in properties) | Property			0
Reset of gross balances (in properties) | Property			0
Ending balance (in properties) | Property	2,037		2,037
Real Estate Activity
Beginning balance			$ 9,183,744
Acquisitions			497,876
Dispositions			(250,852)
Transfers to Held for Sale			0
Transfers from Held for Sale			0
Impairments			(19,331)
Reset of gross balances			(26,343)
Ending balance	$ 9,385,094		9,385,094
Accumulated depreciation and amortization	(1,565,216)		(1,565,216)
Net balance	$ 7,819,878		$ 7,819,878