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Financial Instruments and Derivatives - Net Positions of Foreign Contracts (Details) - Mar. 31, 2019 - Cash Flow Hedging ₽ in Thousands, ₺ in Thousands, € in Thousands, £ in Thousands, zł in Thousands, kr in Thousands, Kč in Thousands, $ in Thousands, $ in Thousands, $ in Thousands	GBP (£)	SEK (kr)	COP ($)	CZK (Kč)	MXN ($)	CAD ($)	TRY (₺)	EUR (€)	PLN (zł)	RUB (₽)
purchase
Derivative [Line Items]
Net position, purchase (sell)	£ 1,133		$ 12,928,059	Kč 34,652	$ 341,547	$ 46,690	₺ 4,917		zł 50,222
sell
Derivative [Line Items]
Net position, purchase (sell)		kr 2,180						€ 13,542		₽ 83,981

X

- Definition

Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Article 12
-Section 13
-Sentence Column B

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+ References

No definition available.

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