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Derivative Instruments and Hedging Activities (Details) - Mar. 31, 2019 € in Millions, ¥ in Millions | EUR (€) instrument | CNY (¥) instrument
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Derivative [Line Items] |  |
Percentage of foreign exchange rate exposure hedged, minimum | 70.00% | 70.00%
Percentage of foreign exchange rate exposure hedged, maximum | 90.00% | 90.00%
Net Investment Hedging | Cross-currency interest rate swaps |  |
Derivative [Line Items] |  |
Number of instruments held | instrument | 2 | 2
Notional amount of derivative asset | € 160 |
Net Investment Hedging | Foreign currency exchange derivatives |  |
Derivative [Line Items] |  |
Notional amount of derivative asset | ¥ |  | ¥ 970
Long-term debt | Derivatives and Hedging Activities Designated as Hedging Instruments under ASC 815 |  |
Derivative [Line Items] |  |
Notional value of derivative liability | € 1,000 |
Interest rate (as percent) | 3.50% | 3.50%

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