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Financial Instruments - Income Statement (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2018 | Sep. 30, 2018 | Jun. 30, 2018 | Mar. 31, 2018 | Dec. 31, 2017 | Sep. 30, 2017 | Jun. 30, 2017 | Mar. 31, 2017 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales | $ 2,572.8 | $ 2,478.5 | $ 2,694.0 | $ 2,784.3 | $ 2,586.4 | $ 2,416.2 | $ 2,389.7 | $ 2,407.0 | $ 10,529.6 | $ 9,799.3 | $ 9,071.0
Deferred gain (loss) in AOCI | (14.1) |  |  |  | (56.5) |  |  |  | (14.1) | (56.5) |
Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months |  |  |  |  |  |  |  |  | (0.2) |  |
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net [Abstract] |  |  |  |  |  |  |  |  |  |  |
Cost of Goods and Services Sold | 2,030.0 | 1,962.9 | 2,114.8 | 2,192.5 | 2,021.6 | 1,894.6 | 1,876.8 | 1,890.7 | 8,300.2 | 7,683.7 | 7,142.3
Selling, general and administrative expenses | 225.8 | $ 230.5 | $ 236.0 | $ 253.4 | 240.0 | $ 225.0 | $ 215.1 | $ 219.0 | 945.7 | 899.1 | 818.0
Other comprehensive income (loss) |  |  |  |  |  |  |  |  | (170.1) | 232.1 | (111.9)
Interest Rate Swap [Member] | Interest expense [Member] |  |  |  |  |  |  |  |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |  |  |  |  |  |  |  |
Gain (Loss) on Fair Value Hedges Recognized in Earnings |  |  |  |  |  |  |  |  | 0.0 | 0.0 | 8.5
Foreign currency contracts [Member] |  |  |  |  |  |  |  |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |  |  |  |  |  |  |  |
Deferred gain (loss) in AOCI | 0.1 |  |  |  | (2.3) |  |  |  | 0.1 | (2.3) |
Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months |  |  |  |  |  |  |  |  | 0.0 |  |
Commodity Contract [Member] |  |  |  |  |  |  |  |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |  |  |  |  |  |  |  |
Deferred gain (loss) in AOCI | (0.2) |  |  |  | 0.0 |  |  |  | (0.2) | 0.0 |
Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months |  |  |  |  |  |  |  |  | (0.2) |  |
Interest Rate Swap [Member] | Fixed rate debt swapped to floating [Member] |  |  |  |  |  |  |  |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |  |  |  |  |  |  |  |
Gain (Loss) on Fair Value Hedges Recognized in Earnings |  |  |  |  |  |  |  |  | 0.0 | 0.0 | (8.5)
Net investment hedge contracts [Member] | Foreign currency contracts [Member] |  |  |  |  |  |  |  |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |  |  |  |  |  |  |  |
Deferred gain (loss) in AOCI | 4.5 |  |  |  | 2.9 |  |  |  | 4.5 | 2.9 |
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net [Abstract] |  |  |  |  |  |  |  |  |  |  |
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, before Tax |  |  |  |  |  |  |  |  | 1.6 | (7.9) | 0.4
Net investment hedge contracts [Member] | Foreign currency contracts [Member] | Interest expense [Member] |  |  |  |  |  |  |  |  |  |  |
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net [Abstract] |  |  |  |  |  |  |  |  |  |  |
Gain (loss) recognized in income (ineffective portion) |  |  |  |  |  |  |  |  | 0.6 | 1.3 | 0.0
Net investment hedge contracts [Member] | Cross Currency Interest Rate Contract [Member] |  |  |  |  |  |  |  |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |  |  |  |  |  |  |  |
Deferred gain (loss) in AOCI | 11.9 |  |  |  | 0.0 |  |  |  | 11.9 | 0.0 |
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net [Abstract] |  |  |  |  |  |  |  |  |  |  |
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, before Tax |  |  |  |  |  |  |  |  | 11.9 | 0.0 | 0.0
Net investment hedge contracts [Member] | Cross Currency Interest Rate Contract [Member] | Interest expense [Member] |  |  |  |  |  |  |  |  |  |  |
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net [Abstract] |  |  |  |  |  |  |  |  |  |  |
Gain (loss) recognized in income (ineffective portion) |  |  |  |  |  |  |  |  | 8.7 | 0.0 | 0.0
Net investment hedge contracts [Member] | Foreign currency denominated debt designated as a net investment hedge [Member] |  |  |  |  |  |  |  |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |  |  |  |  |  |  |  |
Deferred gain (loss) in AOCI | $ (30.4) |  |  |  | $ (57.1) |  |  |  | (30.4) | (57.1) |
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net [Abstract] |  |  |  |  |  |  |  |  |  |  |
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, before Tax |  |  |  |  |  |  |  |  | 26.7 | (83.7) | 16.8
Cash Flow Hedging [Member] | Foreign currency contracts [Member] |  |  |  |  |  |  |  |  |  |  |
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net [Abstract] |  |  |  |  |  |  |  |  |  |  |
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, before Tax |  |  |  |  |  |  |  |  | (1.3) | (4.7) | 7.0
Cash Flow Hedging [Member] | Foreign currency contracts [Member] | Sales Revenue, Net [Member] |  |  |  |  |  |  |  |  |  |  |
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net [Abstract] |  |  |  |  |  |  |  |  |  |  |
Gain (loss) reclassified from AOCI to income (effective portion) |  |  |  |  |  |  |  |  | (2.3) | 3.4 | (0.1)
Gain (Loss) on Discontinuation of Cash Flow Hedge Due to Forecasted Transaction Probable of Not Occurring, Net |  |  |  |  |  |  |  |  | 0.0 | 0.0 | 0.0
Cash Flow Hedging [Member] | Foreign currency contracts [Member] | Selling general and administrative expenses [Member] |  |  |  |  |  |  |  |  |  |  |
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net [Abstract] |  |  |  |  |  |  |  |  |  |  |
Gain (loss) reclassified from AOCI to income (effective portion) |  |  |  |  |  |  |  |  | (0.3) | 0.0 | 0.0
Gain (Loss) on Discontinuation of Cash Flow Hedge Due to Forecasted Transaction Probable of Not Occurring, Net |  |  |  |  |  |  |  |  | 0.0 | (0.1) | 0.3
Cash Flow Hedging [Member] | Foreign currency contracts [Member] | Cost of goods sold [Member] |  |  |  |  |  |  |  |  |  |  |
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net [Abstract] |  |  |  |  |  |  |  |  |  |  |
Gain (loss) reclassified from AOCI to income (effective portion) |  |  |  |  |  |  |  |  | (1.1) | (0.1) | 1.4
Gain (Loss) on Discontinuation of Cash Flow Hedge Due to Forecasted Transaction Probable of Not Occurring, Net |  |  |  |  |  |  |  |  | 0.0 | 0.0 | 0.0
Cash Flow Hedging [Member] | Commodity Contract [Member] |  |  |  |  |  |  |  |  |  |  |
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net [Abstract] |  |  |  |  |  |  |  |  |  |  |
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, before Tax |  |  |  |  |  |  |  |  | (0.4) | 0.6 | 0.6
Cash Flow Hedging [Member] | Commodity Contract [Member] | Sales Revenue, Net [Member] |  |  |  |  |  |  |  |  |  |  |
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net [Abstract] |  |  |  |  |  |  |  |  |  |  |
Gain (loss) reclassified from AOCI to income (effective portion) |  |  |  |  |  |  |  |  | 0.0 | 0.0 | 0.0
Gain (Loss) on Discontinuation of Cash Flow Hedge Due to Forecasted Transaction Probable of Not Occurring, Net |  |  |  |  |  |  |  |  | 0.0 |  | 0.0
Cash Flow Hedging [Member] | Commodity Contract [Member] | Selling general and administrative expenses [Member] |  |  |  |  |  |  |  |  |  |  |
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net [Abstract] |  |  |  |  |  |  |  |  |  |  |
Gain (loss) reclassified from AOCI to income (effective portion) |  |  |  |  |  |  |  |  | 0.0 | 0.0 | 0.0
Gain (Loss) on Discontinuation of Cash Flow Hedge Due to Forecasted Transaction Probable of Not Occurring, Net |  |  |  |  |  |  |  |  | 0.0 |  | 0.0
Cash Flow Hedging [Member] | Commodity Contract [Member] | Cost of goods sold [Member] |  |  |  |  |  |  |  |  |  |  |
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net [Abstract] |  |  |  |  |  |  |  |  |  |  |
Gain (loss) reclassified from AOCI to income (effective portion) |  |  |  |  |  |  |  |  | (0.2) | $ 0.5 | (1.4)
Gain (Loss) on Discontinuation of Cash Flow Hedge Due to Forecasted Transaction Probable of Not Occurring, Net |  |  |  |  |  |  |  |  | $ 0.0 |  | $ (0.3)

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