DEBT (Narrative) (Details) - USD ($) $ in Millions	1 Months Ended	12 Months Ended
	Mar. 31, 2023	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Aug. 31, 2022	Sep. 30, 2021	Jun. 30, 2021
Debt Instrument [Line Items]
Discounts and debt issuance costs		$ 6.2	$ 6.1
Total long-term debt - face value		3,941.5	3,941.9
Commercial Paper					$ 1,600.0
Net proceeds	$ 546.6
Repayment of long-term debt		550.5	557.7	$ 1,451.7
Short-term debt		0.0	100.0
Delayed Draw Term Loan Due 2026 [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity							$ 1,600.0
Supported By Line Of Credit [Member]
Debt Instrument [Line Items]
Outstanding standby letters of credit		83.2
Line Of Credit [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity		$ 1,600.0
Commitment fee		0.10%
Available borrowing capacity		$ 1,516.8
Borrowings		$ 0.0
Line Of Credit [Member] | Base Rate [Member]
Debt Instrument [Line Items]
Applicable margin on borrowing rate		0.125%
Line Of Credit [Member] | SOFR [Member]
Debt Instrument [Line Items]
Applicable margin on borrowing rate		1.125%
Line Of Credit [Member] | Unsecured Line Of Credit, Maturity Of September 2026 [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity					1,000.0
Line Of Credit [Member] | Unsecured Line Of Credit, Maturity Of August 2027 [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity		$ 1,600.0
Standby Letters of Credit [Member]
Debt Instrument [Line Items]
Outstanding standby letters of credit		$ 83.2
Period of standby letters of credit		1 year
Standby Letters of Credit [Member] | SOFR [Member]
Debt Instrument [Line Items]
Applicable margin on borrowing rate		0.175%
Maximum [Member] | Line Of Credit [Member]
Debt Instrument [Line Items]
Commitment fee		0.225%
Maximum [Member] | Line Of Credit [Member] | Base Rate [Member]
Debt Instrument [Line Items]
Applicable margin on borrowing rate		0.625%
Maximum [Member] | Line Of Credit [Member] | SOFR [Member]
Debt Instrument [Line Items]
Applicable margin on borrowing rate		1.625%
Minimum [Member] | Line Of Credit [Member]
Debt Instrument [Line Items]
Commitment fee		0.09%
Minimum [Member] | Line Of Credit [Member] | Base Rate [Member]
Debt Instrument [Line Items]
Applicable margin on borrowing rate		0.00%
Minimum [Member] | Line Of Credit [Member] | SOFR [Member]
Debt Instrument [Line Items]
Applicable margin on borrowing rate		1.00%
Term Loan Due [Member] | Delayed Draw Term Loan Due 2026 [Member]
Debt Instrument [Line Items]
Total long-term debt - face value		$ 0.0	550.0		$ 550.0	$ 1,100.0
Maturity year		2026
Notes [Member]
Debt Instrument [Line Items]
Total long-term debt - face value		$ 3,941.5
Notes [Member] | Delayed Draw Term Loan Due 2026 [Member]
Debt Instrument [Line Items]
Total long-term debt - face value		550.0
Notes [Member] | 5.80% Notes Due 2026 [Member]
Debt Instrument [Line Items]
Total long-term debt - face value	$ 550.0	$ 550.0	0.0
Maturity year		2026
Interest rate	5.80%	5.80%
Commercial Paper [Member]
Debt Instrument [Line Items]
Total long-term debt - face value		$ 550.0	$ 550.0
Maturity year		2027