Investments (Equity Method Investments, Statement of Financial Position) (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Schedule of Equity Method Investments [Line Items]
TOTAL ASSETS	$ 213,309,041	$ 193,473,118
Total liabilities	208,787,616	188,436,923
Equity, Attributable to Parent	4,491,231	5,036,195
TOTAL LIABILITIES AND EQUITY	213,309,041	193,473,118
LP/LLC Interests
Schedule of Equity Method Investments [Line Items]
Total liabilities and partners’ capital included above	979,271	815,783
Equity in LP/LLC interests not included above	216,205	214,442
Carrying value	1,195,476	1,030,225
Equity Method Investment
Schedule of Equity Method Investments [Line Items]
TOTAL ASSETS	44,591,082	67,721,613
Total liabilities	2,802,022	12,174,133
Equity, Attributable to Parent	41,789,060	55,547,480
TOTAL LIABILITIES AND EQUITY	$ 44,591,082	$ 67,721,613