DEBT (Debt) (Details) - USD ($) $ in Millions		1 Months Ended	12 Months Ended
		May 31, 2020	Dec. 31, 2021	Dec. 31, 2020	Jun. 30, 2021	Sep. 30, 2020
Debt Instrument [Line Items]
Total short-term debt			$ 0.0	$ 0.0
Total long-term debt - face value			3,949.6	3,357.8
Unamortized discounts and debt issuance costs			(69.6)	(70.2)
Total long-term debt - book value			3,880.0	3,287.6
Less current maturities			5.2	515.4
Total long-term debt - reported value			3,874.8	2,772.2
Estimated fair value of long-term debt			4,418.5	3,443.2
Delayed Draw Term Loan Expires 2024 [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity					$ 1,600.0
Line of Credit [Member] | Bank Line Of Credit Due 2025 [Member]
Debt Instrument [Line Items]
Total short-term debt	[1]		$ 0.0	0.0
Maturity year			2025
Line of Credit [Member] | Bank Line Of Credit Due 2025 [Member]
Debt Instrument [Line Items]
Total long-term debt - face value	[1]		$ 0.0	0.0
Term Loan Due [Member] | Delayed Draw Term Loan Expires 2024 [Member]
Debt Instrument [Line Items]
Total long-term debt - face value			$ 1,100.0	$ 0.0
Maturity year			2024	2024
Effective interest rate			1.22%
Notes [Member]
Debt Instrument [Line Items]
Total long-term debt - face value			$ 3,949.6
Notes [Member] | Bank Line Of Credit Due 2025 [Member]
Debt Instrument [Line Items]
Maturity year			2025
Notes [Member] | Delayed Draw Term Loan Expires 2024 [Member]
Debt Instrument [Line Items]
Total long-term debt - face value			$ 1,100.0
Notes [Member] | Floating-Rate Notes Due 2021 [Member]
Debt Instrument [Line Items]
Total long-term debt - face value			$ 0.0	$ 500.0
Maturity year			2021
Notes [Member] | 8.85% notes due 2021 [Member]
Debt Instrument [Line Items]
Total long-term debt - face value			$ 0.0	6.0
Interest rate			8.85%
Maturity year			2021
Notes [Member] | 4.50% notes due 2025 [Member]
Debt Instrument [Line Items]
Total long-term debt - face value			$ 400.0	400.0
Interest rate			4.50%
Maturity year			2025
Effective interest rate			4.65%
Notes [Member] | 3.90% notes due 2027 [Member]
Debt Instrument [Line Items]
Total long-term debt - face value			$ 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%	3.50%
Maturity year		2030	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
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
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
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			$ 9.5	$ 11.7
Effective interest rate			2.35%
Line of Credit [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity			$ 1,000.0			$ 1,000.0

[1] Borrowings on the bank line of credit 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.