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

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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- Definition

Aggregate commodity forward contracts for natural gas in amounts expressed in nonmonetary units.

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- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
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- Definition

Amount of the hedged item as of the balance sheet date related to the derivative. For example, the hedged balance on a debt instrument.

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No definition available.

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- Definition

The average percentage points added to the reference rate to compute the variable rate on the group of interest rate derivatives.

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- Definition

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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- Definition

Amount of gain (loss) recognized in earnings in the period from the increase (decrease) in fair value of foreign currency derivatives not designated as hedging instruments.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4C
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Amount of unrealized gain (loss) arising from the change in fair value of price risk derivatives designated as cash flow hedging instruments recorded in accumulated other comprehensive income in the period, before taxes, to the extent that the cash flow hedge is determined to be effective.

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Derivative Instruments - Narrative (Details) € in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017 USD ($)	Sep. 30, 2016 USD ($) MMBTU	Sep. 30, 2017 USD ($)	Sep. 30, 2016 USD ($) MMBTU	Sep. 30, 2017 EUR (€) MMBTU	Sep. 30, 2017 USD ($) MMBTU	Mar. 31, 2017	Dec. 31, 2016 USD ($)	Nov. 30, 2016
Derivatives and Hedges
Derivative, Amount of Hedged Item \| €					€ 400
Debt Instrument, Interest Rate, Stated Percentage					3.125%	3.125%
Senior Notes 3.125%, due 2024 (725 million EUR at June 30, 2017 and 500 million EUR at December 31, 2016)
Derivatives and Hedges
Debt Instrument, Interest Rate, Stated Percentage					3.125%	3.125%	3.125%	3.125%	3.125%
Derivative, Average Basis Spread on Variable Rate					2.50%	2.50%
Commodity futures contracts \| Cash Flow Hedges
Derivatives and Hedges
Coverage of commodity forward contracts (in MM BTUs) \| MMBTU		12,400,000		12,400,000	9,300,000	9,300,000
Commodity forward contracts gain (loss) recognized in OCI	$ (1)	$ (1)	$ 3	$ 2
Commodity forwards contracts \| Cash Flow Hedges
Derivatives and Hedges
Unrecognized gain (loss) included in Accumulated OCI		2		2		$ (1)		$ 6
Foreign exchange contracts \| Derivatives not designated as hedging instruments \| Other expense
Derivatives and Hedges
Foreign exchange contracts gain (loss) recognized in income	$ (2)	4	$ 4	6
Forward exchange contracts \| Derivatives not designated as hedging instruments
Derivatives and Hedges
Notional amount		$ 580		$ 580		320
Cross-currency interest rate swap \| Cash Flow Hedges
Derivatives and Hedges
Notional amount					€ 81	$ 90
Interest rate swaps \| Derivatives designated as hedging instruments
Derivatives and Hedges
Notional amount \| €					€ 400