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Derivative Instruments and Hedging Activities (Narrative) (Details) € in Millions | 3 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Jun. 30, 2016 USD ($) | Dec. 31, 2017 USD ($) country | Dec. 31, 2016 USD ($) | Dec. 31, 2015 USD ($) | Dec. 31, 2017 EUR (€)
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |  |
Number of countries where products sold (over) | country |  | 150 |  |  |
Net losses reclassified from accumulated other comprehensive loss into income |  | $ 2,000,000 | $ 1,000,000 | $ 2,700,000 |
Designated as Hedging Instrument | Cash Flow Hedging |  |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |  |
Net losses reclassified from accumulated other comprehensive loss into income |  | 2,000,000 | 1,000,000 | 2,700,000 |
Notional amount of foreign currency derivatives |  | 1,798,200,000 |  |  |
Designated as Hedging Instrument | Net Investment Hedging |  |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |  |
Notional amount of foreign currency derivatives |  | 374,200,000 | 329,200,000 |  | € 312.0
Foreign currency gains included in cumulative translation adjustment |  | (45,000,000) | 12,700,000 |  |
Interest Rate Swap | Designated as Hedging Instrument | Cash Flow Hedging |  |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |  |
Notional amount of foreign currency derivatives |  | $ 374,200,000 |  |  | € 312.0
Derivative, fixed interest rate |  | 0.3315% |  |  | 0.3315%
Interest Rate Swap | Designated as Hedging Instrument | Fair Value Hedging |  |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |  |
Notional amount of foreign currency derivatives |  | $ 300,000,000.0 |  |  |
Derivative, basis spread on variable rate |  | 4.14% |  |  | 4.14%
Deferred gain on hedge termination | $ 7,300,000 |  |  |  |
Foreign Exchange Contract | Designated as Hedging Instrument | Cash Flow Hedging |  |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |  |
Notional amount of foreign currency derivatives |  | $ 96,800,000 | 111,200,000 |  |
Foreign Exchange Contract | Not Designated as Hedging Instrument |  |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |  |
Notional amount of foreign currency derivatives |  | 1,701,400,000 | 1,550,200,000 |  |
Other Nonoperating Income (Expense) | Foreign Exchange Contract | Not Designated as Hedging Instrument |  |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |  |
Gain (loss) on derivative instruments |  | $ 38,300,000 | $ (5,700,000) | $ (67,300,000) |

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