Variable Interest Entities - Narrative (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021
Variable Interest Entity [Line Items]
Assets	$ 67,595,021		$ 34,915,599
Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Liabilities assumed	76,700	$ 10,600
Other Investments | Other Non-Marketable Investments | Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Assets	122,200		61,500
Unfunded Loan Commitment | Other Non-Marketable Investments | Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Maximum exposure to loss	$ 171,700		$ 95,900