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INVESTMENTS - Deconsolidation Impacts on Financial Statements (Details) - USD ($) $ in Millions	3 Months Ended
	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)

X

- Definition

Represents the carrying value of the assets (liabilities or redeemable noncontrolling interest) deconsolidated during the period as valued on the date that the parent no longer had a controlling financial interest in the subsidiary.

+ References

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- Definition

The aggregate amount of income or expense from ancillary business-related activities (that is to say, excluding major activities considered part of the normal operations of the business).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.7)
-URI https://asc.fasb.org/extlink&oid=126953954&loc=SL114868664-224227

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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