Consolidated Company-Sponsored Investment Funds - Fair Value (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Recurring
Variable Interest Entity [Line Items]
Derivatives	$ 20,941	$ 14,518
Derivatives	14,944	18,180
Total liabilities measured at fair value	24,329	270,870
Level 1 | Recurring
Variable Interest Entity [Line Items]
Derivatives	2,835	1
Total assets measured at fair value	351,975	268,610
Derivatives	33	3,511
Total liabilities measured at fair value	33	3,511
Level 2 | Recurring
Variable Interest Entity [Line Items]
Derivatives	18,106	14,517
Total assets measured at fair value	523,272	914,300
Derivatives	14,911	14,669
Total liabilities measured at fair value	14,911	14,669
Level 3 | Recurring
Variable Interest Entity [Line Items]
Derivatives	0	0
Total assets measured at fair value	121	118
Derivatives	0	0
Total liabilities measured at fair value	9,385	252,690
Company-sponsored investment funds | Recurring
Variable Interest Entity [Line Items]
Total assets measured at fair value	152,376	410,851
Total liabilities measured at fair value	85	2,531
Company-sponsored investment funds | Level 1 | Recurring
Variable Interest Entity [Line Items]
Total assets measured at fair value	15,537	60,630
Total liabilities measured at fair value	72	944
Company-sponsored investment funds | Level 2 | Recurring
Variable Interest Entity [Line Items]
Total assets measured at fair value	136,839	350,221
Total liabilities measured at fair value	13	1,587
Company-sponsored investment funds | Level 3 | Recurring
Variable Interest Entity [Line Items]
Total assets measured at fair value	0	0
Total liabilities measured at fair value	0	0
VIEs
Variable Interest Entity [Line Items]
Derivatives	101	4,902
Derivatives	85	2,531
VIEs | Recurring
Variable Interest Entity [Line Items]
Investments	82,027	286,619
Derivatives	101	4,902
Derivatives	85	2,531
VIEs | Level 1 | Recurring
Variable Interest Entity [Line Items]
Investments	15,240	49,455
Derivatives	48	2,139
Derivatives	72	944
VIEs | Level 2 | Recurring
Variable Interest Entity [Line Items]
Investments	66,787	237,164
Derivatives	53	2,763
Derivatives	13	1,587
VIEs | Level 3 | Recurring
Variable Interest Entity [Line Items]
Investments	0	0
Derivatives	0	0
Derivatives	0	0
VOEs
Variable Interest Entity [Line Items]
Derivatives	11,483
VOEs | Recurring
Variable Interest Entity [Line Items]
Investments	58,765	110,555
Derivatives	11,483	8,775
VOEs | Level 1 | Recurring
Variable Interest Entity [Line Items]
Investments	249	9,036
Derivatives	0	0
VOEs | Level 2 | Recurring
Variable Interest Entity [Line Items]
Investments	58,516	101,519
Derivatives	11,483	8,775
VOEs | Level 3 | Recurring
Variable Interest Entity [Line Items]
Investments	0	0
Derivatives	$ 0	$ 0