Acquisition BUSINESS COMBINATIONS (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Dec. 31, 2019	Apr. 30, 2019
Business Acquisition [Line Items]
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares	39,000,000
Conversion of Stock, Shares Issued	0.158
Business Acquisition, Transaction Costs		$ 7.3
Line of Credit Facility, Initial Borrowing Base	$ 2,100.0	1,600.0
Revolving Credit Facility Elected Commitment Amount		$ 1,300.0
Debt Conversion, Original Debt, Interest Rate of Debt	101.00%
Stock Repurchase Program, Authorized Amount	$ 525.0		$ 200.0
Subsequent Event [Member]
Business Acquisition [Line Items]
Payments to Acquire Businesses, Gross	1,700.0
Revolving Credit Facility Elected Commitment Amount	1,700.0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Long-term Debt	165.0
Debt Instrument, Repurchased Face Amount	447.7
Debt Instrument, Repurchase Amount	452.2
Interest Costs Incurred	$ 6.2