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Fair Value Measurements - Fair Value Option on Consolidated VIEs and Equity Method Investments (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Real Estate Ventures    
Fair Value Option, Quantitative Disclosures    
Pre-tax gain (loss) due to change in fair value of assets and liabilities for which the fair value option was elected $ 12.5 $ 5.3