Variable Interest Entities ("VIEs") (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Variable Interest Entities
Carrying amount of investments in partially owned entities	$ 2,682,672	$ 2,610,558
Other assets	388,431	333,801
Assets	16,083,101	16,187,665
Total liabilities	9,815,642	9,843,931
Unconsolidated VIEs
Variable Interest Entities
Carrying amount of investments in partially owned entities	244,934	109,220
Other assets	51,153
Guarantor obligations, maximum exposure, undiscounted	307,465	196,394
Consolidated VIEs
Variable Interest Entities
Assets	4,837,684	4,901,150
Total liabilities	$ 2,743,890	$ 2,735,826