Quarterly report pursuant to Section 13 or 15(d)

Financial Instruments - Assets and Liabilities Measured at Fair Value (Details)

v3.20.2
Financial Instruments - Assets and Liabilities Measured at Fair Value (Details) - USD ($)
$ in Millions
Sep. 30, 2020
Dec. 31, 2019
Metals contracts not designated as hedging instruments    
Liability Category    
Derivative liability $ 0.7 $ 0.4
Recurring    
Asset Category    
Total 22.5 19.9
Liability Category    
Total 67.8 27.8
Recurring | Level 2 | Other current assets | Metals contracts not designated as hedging instruments | Not Designated as Hedging Instrument    
Asset Category    
Derivative asset 1.9 0.3
Recurring | Level 2 | Other current assets | Foreign exchange not designated as hedging instruments | Not Designated as Hedging Instrument    
Asset Category    
Derivative asset 3.1 0.9
Recurring | Level 2 | Other current assets | Cross currency swaps designated as net investment hedge | Designated as Hedging Instrument    
Asset Category    
Derivative asset 17.5 18.4
Recurring | Level 2 | Accrued expenses and other current liabilities | Metals contracts not designated as hedging instruments | Not Designated as Hedging Instrument    
Liability Category    
Derivative liability 1.2 0.7
Recurring | Level 2 | Accrued expenses and other current liabilities | Foreign exchange not designated as hedging instruments | Not Designated as Hedging Instrument    
Liability Category    
Derivative liability 4.0 0.2
Recurring | Level 2 | Accrued expenses and other current liabilities | Interest rate swaps designated as cash flow hedging instruments | Designated as Hedging Instrument    
Liability Category    
Derivative liability 17.5 6.9
Recurring | Level 2 | Other liabilities | Interest rate swaps designated as cash flow hedging instruments | Designated as Hedging Instrument    
Liability Category    
Derivative liability 38.3 19.7
Recurring | Level 2 | Other liabilities | Cross currency swaps designated as net investment hedge    
Liability Category    
Derivative liability 6.8 0.3
Recurring | Level 1 | Other assets    
Asset Category    
Available for sale equity securities $ 0.0 $ 0.3