DEBT (Debt) (Details) - USD ($) $ in Millions		9 Months Ended
		Sep. 30, 2023		Mar. 31, 2023	Dec. 31, 2022		Sep. 30, 2022		Aug. 31, 2022	Sep. 30, 2021
Debt Instrument [Line Items]
Total short-term debt		$ 0.0			$ 100.0		$ 312.0
Total long-term debt - face value		3,941.6			3,941.9		3,941.9
Unamortized discounts and debt issuance costs		(64.7)			(66.2)		(67.2)
Fair value adjustments	[1]	(2.1)			0.0		0.0
Total long-term debt - book value		3,874.8			3,875.7		3,874.7
Less current maturities		(0.5)			(0.5)		(0.5)
Total long-term debt - reported value		3,874.3			3,875.2		3,874.2
Estimated fair value of long-term debt		3,597.6			3,671.9		3,620.1
Commercial Paper [Member]
Debt Instrument [Line Items]
Total short-term debt	[2]	$ 0.0			0.0		0.0
Maturity year	[2]	2027
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		$ 550.0	$ 1,100.0
Maturity year		2026
Notes [Member] | 4.50% Notes Due 2025 [Member]
Debt Instrument [Line Items]
Total long-term debt - face value		$ 400.0			400.0		400.0
Interest rate		4.50%
Maturity year		2025
Effective interest rate		4.65%
Notes [Member] | 5.80% Notes Due 2026 [Member]
Debt Instrument [Line Items]
Total long-term debt - face value		$ 550.0	[3]	$ 550.0	0.0	[3]	0.0	[3]
Interest rate	[3]	5.80%
Maturity year	[3]	2026
Effective interest rate	[3]	6.02%
Notes [Member] | 3.90% Notes Due 2027 [Member]
Debt Instrument [Line Items]
Total long-term debt - face value		$ 400.0			400.0		400.0
Interest rate		3.90%
Maturity year		2027
Effective interest rate		4.00%
Notes [Member] | 3.50% Notes Due 2030 [Member]
Debt Instrument [Line Items]
Total long-term debt - face value		$ 750.0			750.0		750.0
Interest rate		3.50%
Maturity year		2030
Effective interest rate		3.94%
Notes [Member] | 7.15% Notes Due 2037 [Member]
Debt Instrument [Line Items]
Total long-term debt - face value		$ 129.2			129.2		129.2
Interest rate		7.15%
Maturity year		2037
Effective interest rate		8.05%
Notes [Member] | 4.50% Notes Due 2047 [Member]
Debt Instrument [Line Items]
Total long-term debt - face value		$ 700.0			700.0		700.0
Interest rate		4.50%
Maturity year		2047
Effective interest rate		4.59%
Notes [Member] | 4.70% Notes Due 2048 [Member]
Debt Instrument [Line Items]
Total long-term debt - face value		$ 460.9			460.9		460.9
Interest rate		4.70%
Maturity year		2048
Effective interest rate		5.42%
Other Notes [Member]
Debt Instrument [Line Items]
Total long-term debt - face value		$ 1.5			1.8		1.8
Effective interest rate		0.39%
Line Of Credit [Member] | Bank Line Of Credit Due 2027 [Member]
Debt Instrument [Line Items]
Total short-term debt	[2]	$ 0.0			100.0		312.0
Maturity year	[2]	2027
Line Of Credit [Member] | Bank Line Of Credit Due 2027 [Member]
Debt Instrument [Line Items]
Total long-term debt - face value	[2]	$ 0.0			$ 0.0		$ 0.0
Maturity year	[2]	2027

[1] See Note 6 for additional information on our fair value hedging strategy.

[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.

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