DEBT (Credit Facilities) (Details) $ in Millions	3 Months Ended
	Jun. 30, 2020 USD ($) Rate	Dec. 31, 2019 USD ($)	Jun. 30, 2019 USD ($)	Jun. 03, 2019 USD ($)	Dec. 31, 2018 USD ($)
Line of Credit Facility [Line Items]
2019 Term Loan	$ 375.0	$ 0.0		$ 850.0
Line of Credit Facility, Remaining Borrowing Capacity	997.0
Senior Notes Became Due During Quarter	412.2
Cash and cash equivalents	557.0	337.5	$ 265.4		$ 426.8
Long-term Debt, Excluding Current Maturities	5,416.6	5,789.8
Line of Credit Facility, Fair Value of Amount Outstanding		375.0
Revolving Credit Facility, maximum borrowing capacity	1,000.0
Notes Payable	2.2	2.2
Debt, Current	790.8	415.2
Credit Facility Option to Increase	350.0
Credit Facility, Maximum Swing Line Borrowings	100.0
Notes Payable	6.4	7.0
Senior notes due 2027 [Member]
Line of Credit Facility [Line Items]
Long-term Debt, Excluding Current Maturities	600.0	600.0
Senior notes due 2024 [Member] [Member]
Line of Credit Facility [Line Items]
Long-term Debt, Excluding Current Maturities	$ 600.0	600.0
Senior notes due 2020 [Member]
Line of Credit Facility [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	4.625%
Senior notes due 2045 [Member]
Line of Credit Facility [Line Items]
Long-term Debt, Excluding Current Maturities	$ 900.0	900.0
Senior notes due 2022 [Member]
Line of Credit Facility [Line Items]
Senior Notes, Noncurrent	500.0	500.0
Long-term Debt, Excluding Current Maturities	$ 500.0	$ 500.0
Term Loan and Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Debt to EBITDA (Leverage) Ratio Quarter Ending 1 Year From Present	4.5
Debt to EBITDA (Leverage) Ratio Quarter Ending Thereafter March 31, 2021	4.0
2019 Term Loan [Member]
Line of Credit Facility [Line Items]
Term Loan Accrue Interest per Annum at Libor Plus Margin Percentage | Rate	1.175%
Term Loan Accrue Interest Per Annum Base Rate Plus Percentage | Rate	0.175%
Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Credit Facility, Maximum Letters of Credit	$ 150.0
Line of Credit Facility, Interest Rate at Period End | Rate	1.14%
Revolving Credit Facility Accrue Interest per Annum at Libor Plus Margin Percentage | Rate	1.25%
Revolving Credit Facility Accrue Interest Per Annum Base Rate Plus Percentage | Rate	0.25%
Revolving Credit Facility Fee Percentage Required to Pay on Outstanding Commitments | Rate	0.25%
Maximum [Member] | Term Loan and Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Debt to EBITDA (Leverage) Ratio Next Three Quarters	5.0
Prime Rate [Member] | 2019 Term Loan [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Interest Rate Description	0.0% to 0.175%
Prime Rate [Member] | Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Interest Rate Description	0.00% to 0.25%
London Interbank Offered Rate (LIBOR) [Member] | 2019 Term Loan [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Interest Rate Description	0.55% to 1.175%