Accumulated change, net of tax, in accumulated gains and losses from derivative instruments designated and qualifying as the effective portion of cash flow hedges. Includes an entity's share of an equity investee's Increase or Decrease in deferred hedging gains or losses.

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The estimated net amount of existing gains or losses on cash flow hedges at the reporting date expected to be reclassified to earnings within the next 12 months.

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Average contractual rate at which a foreign currency can be purchased or sold.

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Nominal or face amount used to calculate payments on the derivative liability.

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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.

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The aggregate fair value amounts of derivative instruments that contain credit-risk-related contingent features that are in a net liability position at the end of the reporting period. For nonderivative instruments that are designated and qualify as hedging instruments, the fair value amounts are the carrying value of the nonderivative hedging instrument, including the adjustment for the foreign currency transaction gain (loss) on that instrument.

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The percentage of expected requirements covered by the aggregate notional amount of derivative contracts expressed in nonmonetary units. For example, the number of barrels specified in a fuel oil forward purchase contract as a percentage of expected need.

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Period remaining until the derivative contract matures, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The amount of net gains or losses on foreign currency cash flow hedges reclassified during the period to earnings from accumulated other comprehensive income upon the hedged transaction affecting earnings.

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The net gain (loss) during the reporting period due to ineffectiveness in foreign currency cash flow hedges. Recognized in earnings.

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Derivative Financial Instruments and Related Hedging Programs, Narrative (Details)	3 Months Ended	9 Months Ended
	Sep. 30, 2016 USD ($)	Sep. 30, 2016 USD ($)	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Sep. 30, 2016 EUR (€)	Dec. 31, 2015 USD ($)	Dec. 31, 2015 EUR (€)
Derivative [Line Items]
Foreign Currency Cash Flow Hedge Gain (Loss) Reclassified to Earnings, Net	$ 0
Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months		$ 0
Accumulated other comprehensive loss related to cash flow hedges	(100,000)	(100,000)
Gain (Loss) on Foreign Currency Cash Flow Hedge Ineffectiveness	0
Derivative Financial Instruments and Related Hedging Programs (Narrative) [Abstract]
Aggregate fair value of derivative instruments that contain credit-risk-related contingency features that were in a net liability position	$ 1,700,000	$ 1,700,000						$ 14,600,000
Foreign Currency \| Designated as Hedging Instrument \| Purchase
Derivative [Line Items]
Derivative Liability, Notional Amount \| €							€ 1,593,700		€ 4,700,000
Derivative, Average Forward Exchange Rate	1.13	1.13					1.13	1.15	1.15
Minimum \| Foreign Currency \| Designated as Hedging Instrument \| Purchase
Derivative [Line Items]
Derivative, Remaining Maturity		3 months
Maximum \| Foreign Currency \| Designated as Hedging Instrument \| Purchase
Derivative [Line Items]
Derivative, Remaining Maturity		11 months
Scenario, Forecast [Member] \| Natural Gas Member
Derivative Financial Instruments and Related Hedging Programs (Narrative) [Abstract]
Derivative, Nonmonetary Notional Amount, Percent of Required Need, Coverage			33.00%	73.00%	74.00%	80.00%