DEBT (Narrative) (Details) - USD ($) $ in Millions		1 Months Ended	3 Months Ended
		Mar. 31, 2023	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022	Aug. 31, 2022	Sep. 30, 2021	Jun. 30, 2021
Debt Instrument [Line Items]
Discounts and debt issuance costs			$ 2.5	$ 1.3
Total long-term debt - face value		$ 3,941.6	3,941.6	3,947.2	$ 3,941.9
Financing costs		67.2	67.2	68.8	66.2
Commercial Paper						$ 1,600.0
Net proceeds		546.6
Repayment of long-term debt			550.4	2.3
Short-term debt		0.0	0.0	100.0	100.0
Supported By Line Of Credit [Member]
Debt Instrument [Line Items]
Outstanding standby letters of credit		83.2	83.2
Line Of Credit [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity		1,600.0	$ 1,600.0
Commitment fee			0.10%
Available borrowing capacity		1,516.8	$ 1,516.8
Borrowings		0.0	$ 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		1,600.0	$ 1,600.0			1,000.0
Standby Letters of Credit [Member]
Debt Instrument [Line Items]
Outstanding standby letters of credit		83.2	$ 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	$ 0.0	1,100.0	550.0	$ 550.0	$ 1,100.0
Maturity year			2026
Notes [Member] | Delayed Draw Term Loan Due 2026 [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity								$ 1,600.0
Notes [Member] | 5.80% Notes Due 2026 [Member]
Debt Instrument [Line Items]
Total long-term debt - face value	[1]	$ 550.0	$ 550.0	0.0	0.0
Maturity year			2026
Interest rate		5.80%	5.80%
Commercial Paper [Member]
Debt Instrument [Line Items]
Total long-term debt - face value	[2]	$ 550.0	$ 550.0	$ 0.0	$ 550.0

[1] The effective interest rate excludes the impact of the interest rate swap described in Note 6.

[2] Borrowings on the bank line of credit and commercial paper are classified as short-term if we intend to repay within twelve months and as long-term if we have the intent and ability to extend payment beyond twelve months.