XML 98 R82.htm IDEA: XBRL DOCUMENT v3.20.4
Hedging Activities and Fair Value Measurements, Liability Balance Sheet Offsetting (Details) - USD ($)
$ in Millions
Dec. 31, 2020
Dec. 31, 2019
Interest rate derivatives [Member]    
Offsetting Liabilities [Line Items]    
Gross Amounts of Recognized Liabilities $ 120.1 $ 13.5
Gross Amounts Offset in the Balance Sheet 0.0 0.0
Amounts of Liabilities Presented in the Balance Sheet 120.1 13.5
Financial Instruments 0.0 0.0
Cash Collateral Paid 0.0 0.0
Amounts That Would Have Been Presented On Net Basis 120.1 13.5
Commodity Derivatives [Member]    
Offsetting Liabilities [Line Items]    
Gross Amounts of Recognized Liabilities 246.3 116.2
Gross Amounts Offset in the Balance Sheet 0.0 0.0
Amounts of Liabilities Presented in the Balance Sheet 246.3 116.2
Financial Instruments (228.5) (115.3)
Cash Collateral Paid (17.3) 0.0
Amounts That Would Have Been Presented On Net Basis $ 0.5 $ 0.9