Variable Interest Entities (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Variable Interest Entity [Line Items]
Assets in partnership	$ 34,049,715	$ 26,604,254
Variable Interest Entity Not Primary Beneficiary [Member]
Variable Interest Entity [Line Items]
Assets in partnership	384,500
Investment Vehicle [Member] | Variable Interest Entity Not Primary Beneficiary [Member]
Variable Interest Entity [Line Items]
Assets in partnership	101,300
Debt and Equity [Member] | Variable Interest Entity Not Primary Beneficiary [Member]
Variable Interest Entity [Line Items]
Carrying amount of debt and equity investments	$ 77,100