Fair Value Measurements - Impairment of Assets Measured on a Non-Recurring Basis (Details) - Fair Value, Measurements, Nonrecurring - Level 3 - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Impairment Disclosure
Impairment Charges	$ 86,411	$ 68,453	$ 31,076
Real estate and intangibles
Impairment Disclosure
Fair Value Measurements	1,182,551	32,497	29,494
Impairment Charges	86,411	39,119	24,246
Investment Management goodwill
Impairment Disclosure
Fair Value Measurements	0	0	0
Impairment Charges	0	29,334	0
Equity method investments
Impairment Disclosure
Fair Value Measurements	0	0	8,175
Impairment Charges	$ 0	$ 0	$ 6,830