Financial Instruments - Notional Principal Amounts of Outstanding Derivative Instruments (Parenthetical) (Details) - Contract	Jun. 30, 2019	Dec. 31, 2018
Not Designated as Hedging Instrument \| Foreign Exchange-forward Contracts
Derivatives Fair Value [Line Items]
Number of outstanding derivatives contracts	2	2

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

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Balance Type:	na
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