Financial Instruments - Assets and Liabilities Measured at Fair Value (Details) - Recurring - USD ($) $ in Millions	Jun. 30, 2021	Dec. 31, 2020
Asset Category
Total	$ 22.2	$ 16.9
Liability Category
Total	71.2	96.7
Level 2 \| Other current assets \| Commodities Investment \| Not Designated as Hedging Instrument
Asset Category
Derivative asset	1.5	0.4
Level 2 \| Other current assets \| Foreign exchange contracts not designated as hedging instruments \| Not Designated as Hedging Instrument
Asset Category
Derivative asset	0.0	0.2
Level 2 \| Other current assets \| Cross currency swaps designated as net investment hedge \| Designated as Hedging Instrument
Asset Category
Derivative asset	17.0	16.3
Level 2 \| Other current assets \| Forward starting swaps not designated as hedging instruments \| Not Designated as Hedging Instrument
Asset Category
Derivative asset	2.6	0.0
Level 2 \| Other assets \| Not Designated as Hedging Instrument
Asset Category
Derivative asset	1.1	0.0
Level 2 \| Accrued expenses and other current liabilities \| Commodities Investment \| Not Designated as Hedging Instrument
Liability Category
Derivative liability	1.1	1.6
Level 2 \| Accrued expenses and other current liabilities \| Foreign exchange contracts not designated as hedging instruments \| Not Designated as Hedging Instrument
Liability Category
Derivative liability	0.7	0.7
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	17.6
Level 2 \| Accrued expenses and other current liabilities \| Forward starting swaps not designated as hedging instruments \| Not Designated as Hedging Instrument
Liability Category
Derivative liability	1.2	0.0
Level 2 \| Other liabilities \| Interest rate swaps designated as cash flow hedging instruments \| Designated as Hedging Instrument
Liability Category
Derivative liability	20.9	33.5
Level 2 \| Other liabilities \| Cross currency swaps designated as net investment hedge \| Designated as Hedging Instrument
Liability Category
Derivative liability	25.5	43.3
Level 2 \| Other liabilities \| Forward starting swaps not designated as hedging instruments \| Not Designated as Hedging Instrument
Liability Category
Derivative liability	$ 4.3	$ 0.0

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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