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FAIR VALUE OF FINANCIAL INSTRUMENTS (Details) - USD ($)
$ in Millions
Dec. 31, 2020
Dec. 31, 2019
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Derivative, Notional Amount $ 111.9  
Senior Notes [Member]    
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]    
Long-term debt 3,730.1 $ 850.0
Long-term Debt, Fair Value $ 4,084.7 $ 866.2