FINANCING - Equity Units (Details) - USD ($) shares in Millions, $ in Millions		1 Months Ended	12 Months Ended
	Aug. 01, 2022	Aug. 31, 2022	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	May 31, 2022
Debt Instrument [Line Items]
Proceeds from issuance of common stock			$ 36.0	$ 1,808.0	$ 73.0
Series 2019A Remarketable Junior Subordinated Notes | Junior subordinated notes
Debt Instrument [Line Items]
Remarketed principal amount						$ 862.5
Quarterly interest rate						4.475%
Series 2019B Remarketable Junior Subordinated Notes | Junior subordinated notes
Debt Instrument [Line Items]
Remarketed principal amount						$ 862.5
Quarterly interest rate						5.113%
2019 Series A Equity Units | Junior subordinated notes
Debt Instrument [Line Items]
Common stock issued to settle purchase contracts (in shares)		25.2
Proceeds from issuance of common stock	$ 1,725.0