DEBT (Debt) (Details) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2022	Dec. 31, 2021	Mar. 31, 2021
Debt Instrument [Line Items]
Total short-term debt		$ 100.0	$ 0.0	$ 0.0
Total long-term debt - face value		3,947.2	3,949.6	2,857.4
Unamortized discounts and debt issuance costs		(68.8)	(69.6)	(69.1)
Total long-term debt - book value		3,878.4	3,880.0	2,788.3
Less current maturities		3.9	5.2	15.4
Total long-term debt - reported value		3,874.5	3,874.8	2,772.9
Estimated fair value of long-term debt		4,090.3	4,418.5	3,219.8
Line of Credit [Member] | Bank Line Of Credit Due 2026 [Member]
Debt Instrument [Line Items]
Total short-term debt	[1]	$ 100.0	0.0	0.0
Maturity year	[1]	2026
Effective interest rate	[1]	1.125%
Line of Credit [Member] | Bank Line Of Credit Due 2026 [Member]
Debt Instrument [Line Items]
Total long-term debt - face value	[1]	$ 0.0	0.0	0.0
Maturity year		2026
Term Loan Due [Member] | Delayed Draw Term Loan Expires 2026 [Member]
Debt Instrument [Line Items]
Total long-term debt - face value		$ 1,100.0	1,100.0	0.0
Maturity year	[1]	2026
Effective interest rate		1.38%
Notes [Member]
Debt Instrument [Line Items]
Total long-term debt - face value		$ 3,947.2
Notes [Member] | 8.85% notes due 2021 [Member]
Debt Instrument [Line Items]
Total long-term debt - face value		$ 0.0	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	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	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		$ 7.1	$ 9.5	$ 11.3
Effective interest rate		2.33%
Line of Credit [Member]
Debt Instrument [Line Items]
Total short-term debt		$ 100.0

[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.