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Financial Instrument, Risk Management and Fair Value Measurements, Derivatives Gain (Loss) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Accumulated Other Comprehensive Income [Roll Forward] |  |  |
Derivatives qualifying as hedges, net of tax | $ (6.0) | $ 1.9 | $ (13.3)
Cash Flow Hedging |  |  |
Accumulated Other Comprehensive Income [Roll Forward] |  |  |
Accumulated other comprehensive income (loss), net of tax, beginning | 5.2 | 7.1 | (6.2)
Unrealized hedging gains (losses) and other, net of tax | 13.7 | (1.2) | 7.3
Accumulated other comprehensive income (loss), net of tax, ending | 11.2 | 5.2 | 7.1
Cash Flow Hedging | Interest Expense |  |  |
Accumulated Other Comprehensive Income [Roll Forward] |  |  |
Effective portion | (7.6) | (0.6) | 6.5
Ineffective portion | (0.1) | (0.1) | (0.5)
Derivatives qualifying as hedges, net of tax | 6.0 | (1.9) | 13.3
Cash Flow Hedging | Foreign currency contracts |  |  |
Accumulated Other Comprehensive Income [Roll Forward] |  |  |
Accumulated other comprehensive income (loss), net of tax, beginning | 4.4 | 4.6 | (6.1)
Unrealized hedging gains (losses) and other, net of tax | 14.2 | (0.4) | 6.1
Accumulated other comprehensive income (loss), net of tax, ending | 10.4 | 4.4 | 4.6
Cash Flow Hedging | Foreign currency contracts | Cost of Sales and Services |  |  |
Accumulated Other Comprehensive Income [Roll Forward] |  |  |
Effective portion | (8.1) | 0.3 | 5.1
Ineffective portion | (0.1) | (0.1) | (0.5)
Derivatives qualifying as hedges, net of tax | 6.0 | (0.2) | 10.7
Cash Flow Hedging | Energy contracts |  |  |
Accumulated Other Comprehensive Income [Roll Forward] |  |  |
Accumulated other comprehensive income (loss), net of tax, beginning | 0.0 | 1.4 | (1.3)
Unrealized hedging gains (losses) and other, net of tax | 0.0 | (0.8) | 1.2
Accumulated other comprehensive income (loss), net of tax, ending | 0.0 | 0.0 | 1.4
Cash Flow Hedging | Energy contracts | Cost of Sales and Services |  |  |
Accumulated Other Comprehensive Income [Roll Forward] |  |  |
Effective portion | 0.0 | (0.6) | 1.5
Ineffective portion | 0.0 | 0.0 | 0.0
Derivatives qualifying as hedges, net of tax | 0.0 | (1.4) | 2.7
Cash Flow Hedging | Other |  |  |
Accumulated Other Comprehensive Income [Roll Forward] |  |  |
Accumulated other comprehensive income (loss), net of tax, beginning | 0.8 | 1.1 | 1.2
Unrealized hedging gains (losses) and other, net of tax | (0.5) | 0.0 | 0.0
Accumulated other comprehensive income (loss), net of tax, ending | 0.8 | 0.8 | 1.1
Cash Flow Hedging | Other | Interest Expense |  |  |
Accumulated Other Comprehensive Income [Roll Forward] |  |  |
Effective portion | 0.5 | (0.3) | (0.1)
Ineffective portion | 0.0 | 0.0 | 0.0
Derivatives qualifying as hedges, net of tax | 0.0 | (0.3) | (0.1)
Derivatives Not Designated as Hedging Instruments |  |  |
Accumulated Other Comprehensive Income [Roll Forward] |  |  |
Amount of pre-tax gain or (loss) recognized in income on derivatives | (10.9) | (12.5) | (44.2)
Derivatives Not Designated as Hedging Instruments | Foreign currency contracts | Cost of Sales and Services |  |  |
Accumulated Other Comprehensive Income [Roll Forward] |  |  |
Amount of pre-tax gain or (loss) recognized in income on derivatives | $ (10.9) | $ (12.5) | $ (44.2)

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