Variable Interest Entities - Narrative (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Variable Interest Entity [Line Items]
Assets	$ 69,052,566		$ 34,915,599
Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Liabilities assumed	123,400	$ 10,600
Other Investments | Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Assets	124,300		61,500
Unfunded Loan Commitment | Other Non-Marketable Investments | Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Maximum exposure to loss	$ 219,100		$ 95,900