Commitments and Contingencies	9 Months Ended
Commitments and Contingencies	Sep. 30, 2021
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies From time to time, the Company and its Affiliates may be subject to claims, legal proceedings, and other contingencies in the ordinary course of their business activities. Any such matters are subject to various uncertainties, and it is possible that some of these matters may be resolved in a manner unfavorable to the Company or its Affiliates. The Company and its Affiliates establish accruals, as necessary, for matters for which the outcome is probable and the amount of the liability can be reasonably estimated. The Company has committed to co-invest in certain Affiliate sponsored investment products. As of September 30, 2021, these unfunded commitments were $114.1 million and may be called in future periods. As of September 30, 2021, the Company was contingently liable to make payments of $188.0 million related to the achievement of specified financial targets by certain of its Affiliates accounted for under the equity method, of which $40.5 million may become payable in 2022 and $147.5 million may become payable from 2023 through 2029. As of September 30, 2021, the Company expected to make payments of approximately $15 million. In the event certain financial targets are not met at one of the Company’s Affiliates, the Company may receive payments of up to $12.5 million and also has the option to reduce its ownership interest and receive an incremental payment of $25.0 million. Affiliate equity interests provide holders at consolidated Affiliates with a conditional right to put their interests to the Company over time. See Note 15. In connection with one of the Company’s investments in an Affiliate accounted for under the equity method, a minority owner has the right to elect to sell a portion of its ownership interest in the Affiliate to the Company annually. If the minority owner sells its interest to the Company, the Company will continue to account for the Affiliate under the equity method. In the fourth quarter of 2020, the Company was notified by the minority owner that it may elect to sell a 5% interest in the Affiliate to the Company. In the first quarter of 2021, with the consent of the Company, the minority owner rescinded this notice. As of September 30, 2021, the minority owner maintained a 14% ownership interest in the Affiliate. The Company and certain of its consolidated Affiliates operate under regulatory authorities that require the maintenance of minimum financial or capital requirements. The Company’s management is not aware of any significant violations of such requirements. On July 2, 2021, the Company entered into a definitive agreement to acquire a majority equity interest in Parnassus Investments, an ESG-dedicated fund manager. On October 1, 2021, the Company completed its investment for upfront cash consideration of $300.4 million, deferred consideration of $150.2 million which is payable in the fourth quarter of 2022, and a contingent payment obligation related to the achievement of specified financial targets of up to $75.1 million which may become payable from 2024 through 2026. This transaction was financed with available cash. On September 27, 2021, the Company entered into a definitive agreement to acquire a majority equity interest in Abacus Capital Group LLC (“Abacus”), a real estate investment manager focused on the U.S. multifamily sector. Following the close of the transaction, Abacus partners will continue to hold a substantial portion of the equity of the business and direct its day-to-day operations. The transaction, which is expected to close during the fourth quarter of 2021, is subject to customary closing conditions and regulatory approvals.