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Derivative Instruments (Narrative) (Details)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2019 USD ($) instrument	Sep. 30, 2018 USD ($)	Sep. 30, 2019 USD ($) instrument	Sep. 30, 2018 USD ($)	Dec. 31, 2018 USD ($)
Derivative
Effective interest rate	5.10%		5.10%
Derivative Instruments in Hedges, Net Investment in Foreign Operations, Assets, Fair Value, Net	$ 9,000,000		$ 9,000,000		$ 9,500,000
Loss on ineffective hedge	$ (700,000.0)	$ 400,000	(500,000.0)	$ 1,900,000
Amount of derivaitve cash flow hedge to be repcognized in the next 12 months			$ 7,300,000	$ 5,400,000
Interest rate swap contract
Derivative
Interest rate swap contract (instrument) | instrument	4		4
Derivative, notional amount	$ 500,000,000		$ 500,000,000
Contract remaining term	2 years
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification and Tax	$ 700,000
Interest rate swap contract 2
Derivative
Derivative, notional amount	$ 500,000,000		500,000,000
Contract remaining term	5 years
Foreign currency derivatives
Derivative
Derivative, notional amount	$ 75,100,000		75,100,000		19,600,000
Commodity derivative contracts
Derivative
Derivative, notional amount	$ 111,000,000		111,000,000		142,100,000
Unrealized (loss) gain in other comprehensive income			$ 17,200,000		$ 10,700,000
Scenario, Plan
Derivative
Effective interest rate	4.85%		4.85%

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- Definition

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

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-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
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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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Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

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Amount of gain (loss) from the ineffectiveness of the hedge.

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The number of derivative instruments of a particular group held by the entity.

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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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Net fair value of all derivatives designated as hedges of net investment in foreign operations.

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Amount, before tax and reclassification, of gain (loss) from derivative instrument designated and qualifying cash flow hedge included in assessment of hedge effectiveness.

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Amount after tax of increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss).

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