Annual report pursuant to Section 13 and 15(d)

Fair Value Measurements Narrative (Details)

v3.20.4
Fair Value Measurements Narrative (Details) - USD ($)
$ in Millions
3 Months Ended 12 Months Ended
Dec. 31, 2020
Mar. 31, 2020
Dec. 31, 2019
Sep. 30, 2018
Dec. 31, 2020
Jeffersonville [Member]          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Impairment charges $ 2.4   $ 37.6 $ 49.7  
Foxwoods [Member]          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Impairment charges $ 19.2 $ 45.7     $ 64.8