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INVESTMENTS - Deconsolidation Impacts on Financial Statements (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2023 | Jun. 30, 2022 | Jun. 30, 2023 | Jun. 30, 2022
Debt and Equity Securities, FV-NI [Line Items] |  |  |  |
Gains recognized upon deconsolidation | $ 106.2 | $ (279.9) | $ 241.6 | $ (478.4)
Reclassification out of accumulated other comprehensive income | Currency translation adjustments |  |  |  |
Debt and Equity Securities, FV-NI [Line Items] |  |  |  |
Gains recognized upon deconsolidation | 0.0 | 5.2 | 0.0 | 6.8
Assets |  |  |  |
Debt and Equity Securities, FV-NI [Line Items] |  |  |  |
Net decrease in assets, liabilities and redeemable noncontrolling interests | (79.0) | (216.3) | (81.4) | (313.8)
Liability |  |  |  |
Debt and Equity Securities, FV-NI [Line Items] |  |  |  |
Net decrease in assets, liabilities and redeemable noncontrolling interests | (33.0) | (6.4) | (33.1) | (15.0)
Redeemable Noncontrolling Interest |  |  |  |
Debt and Equity Securities, FV-NI [Line Items] |  |  |  |
Net decrease in assets, liabilities and redeemable noncontrolling interests | $ 5.9 | $ (155.0) | $ 5.9 | $ (218.1)

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