DEBT (Debt) (Details) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2023	Dec. 31, 2022	Aug. 31, 2022	Mar. 31, 2022	Sep. 30, 2021
Debt Instrument [Line Items]
Total short-term debt		$ 0.0	$ 100.0		$ 100.0
Total long-term debt - face value		3,941.6	3,941.9		3,947.2
Unamortized discounts and debt issuance costs		(67.2)	(66.2)		(68.8)
Fair value adjustments	[1]	3.0	0.0		0.0
Total long-term debt - book value		3,877.4	3,875.7		3,878.4
Less current maturities		0.5	0.5		3.9
Total long-term debt - reported value		3,876.9	3,875.2		3,874.5
Estimated fair value of long-term debt		3,770.2	3,671.9		4,090.3
Line Of Credit [Member] | Bank Line Of Credit Due 2027 [Member]
Debt Instrument [Line Items]
Total short-term debt	[2]	$ 0.0	100.0		100.0
Maturity year	[2]	2027
Commercial Paper [Member]
Debt Instrument [Line Items]
Total short-term debt	[2]	$ 0.0	0.0		0.0
Maturity year		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
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	$ 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	[3]	$ 550.0	0.0		0.0
Interest rate		5.80%
Maturity year		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		7.1
Effective interest rate		0.46%
Commercial Paper [Member]
Debt Instrument [Line Items]
Total long-term debt - face value	[2]	$ 550.0	$ 550.0		$ 0.0

[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.