v3.20.1
Guarantees and Contingencies (Details) - Cadillac Project - USD ($)
$ in Millions
3 Months Ended 6 Months Ended 12 Months Ended
Mar. 31, 2020
Dec. 31, 2019
Sep. 30, 2019
Mar. 31, 2020
Dec. 31, 2019
Contingencies          
Estimate damages claimed for statutory misrepresentation $ 1.0     $ 1.0  
Business interruption loss period 45 days        
Business interruption expected revenue loss $ 1.4        
Impairment     $ 25.0    
Write-down of capital spares   $ 0.6 0.3    
Insurance receivable 6.1   24.2 6.1  
Insurance     $ 1.0    
Capital expenditures 9.7     14.8  
Insurance Recoveries 7.4     $ 18.6 $ 11.3
Gain on business interruption insurance recovery $ 3.2 $ 2.0