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INVESTMENTS - Deconsolidation Impacts on Financial Statements (Details) - USD ($) $ in Millions | 3 Months Ended
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Mar. 31, 2023 | Mar. 31, 2022
Debt and Equity Securities, FV-NI [Line Items] |  |
Gains recognized upon deconsolidation | $ 135.4 | $ (198.5)
Reclassification out of accumulated other comprehensive income | Currency translation adjustments |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Gains recognized upon deconsolidation | 0.0 | 1.6
Assets |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Net decrease in assets, liabilities and redeemable noncontrolling interests | (2.4) | (97.5)
Liability |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Net decrease in assets, liabilities and redeemable noncontrolling interests | (0.1) | (8.6)
Redeemable Noncontrolling Interest |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Net decrease in assets, liabilities and redeemable noncontrolling interests | $ 0.0 | $ (63.0)

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