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Fair Value Measurements (Details) - USD ($)
$ in Millions
Mar. 31, 2020
Dec. 31, 2019
Carrying Amount    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Long-term notes receivable $ 11.2 $ 15.7
Company's debt 819.6 704.6
Fair Value    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Company's debt $ 809.1 $ 727.3