Financial Instruments - Assets and Liabilities Measured at Fair Value (Details) - Recurring - USD ($) $ in Millions	Jun. 30, 2020	Dec. 31, 2019
Asset Category
Total	$ 49.2	$ 19.9
Liability Category
Total	61.0	27.8
Level 2 \| Other current assets \| Foreign exchange and metals contracts not designated as hedging instruments \| Not Designated as Hedging Instrument
Asset Category
Derivative asset	1.4	1.2
Level 2 \| Other current assets \| Cross currency swaps designated as net investment hedge \| Designated as Hedging Instrument
Asset Category
Derivative asset	18.5	18.4
Level 2 \| Other assets \| Cross currency swaps designated as net investment hedge \| Designated as Hedging Instrument
Asset Category
Derivative asset	29.3	0.0
Level 2 \| Accrued expenses and other current liabilities \| Foreign exchange and metals contracts not designated as hedging instruments \| Not Designated as Hedging Instrument
Liability Category
Derivative liability	2.3	0.9
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
Level 2 \| Other liabilities \| Cross currency swaps designated as net investment hedge \| Designated as Hedging Instrument
Liability Category
Derivative liability	0.0	0.3
Level 2 \| Other liabilities \| Interest rate swaps designated as cash flow hedging instruments \| Designated as Hedging Instrument
Liability Category
Derivative liability	41.2	19.7
Level 1 \| Other assets
Asset Category
Available for sale equity securities	$ 0.0	$ 0.3

Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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Fair value of financial and nonfinancial obligations.

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