Variable Interest Entities ("VIEs") (Details) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Variable Interest Entities
Carrying amount of investments in partially owned entities	$ 2,421,283	$ 2,691,478
Other assets	369,182	373,454
Assets	15,599,232	15,998,608
Total liabilities	9,371,039	9,826,739
Unconsolidated VIEs
Variable Interest Entities
Carrying amount of investments in partially owned entities	263,988	261,443
Other assets	54,708	52,530
Guarantor obligations, maximum exposure, undiscounted	321,696	316,973
Consolidated VIEs
Variable Interest Entities
Assets	4,807,906	4,804,481
Total liabilities	$ 2,751,906	$ 2,738,539