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INVESTMENTS - Deconsolidation Impacts on Financial Statements (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2023 | Sep. 30, 2022
Debt and Equity Securities, FV-NI [Line Items] |  |  |  |
Gains recognized upon deconsolidation | $ 2.8 | $ (82.8) | $ 244.4 | $ (561.2)
Reclassification out of accumulated other comprehensive income | Currency translation adjustments |  |  |  |
Debt and Equity Securities, FV-NI [Line Items] |  |  |  |
Gains recognized upon deconsolidation | 0.7 | 0.0 | 0.7 | 6.9
Assets |  |  |  |
Debt and Equity Securities, FV-NI [Line Items] |  |  |  |
Net decrease in assets, liabilities and redeemable noncontrolling interests | (568.7) | 24.2 | (650.1) | (289.6)
Liability |  |  |  |
Debt and Equity Securities, FV-NI [Line Items] |  |  |  |
Net decrease in assets, liabilities and redeemable noncontrolling interests | (10.4) | 0.0 | (43.5) | (15.0)
Redeemable Noncontrolling Interest |  |  |  |
Debt and Equity Securities, FV-NI [Line Items] |  |  |  |
Net decrease in assets, liabilities and redeemable noncontrolling interests | $ (466.1) | $ 42.9 | $ (460.2) | $ (175.2)

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