Derivative, Notional Amount, Contracts Entered During Period

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- Definition

Derivative, Notional Amount, Net Settled

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- Definition

Aggregate notional amount of price risk derivatives for instruments with notional amounts expressed in percentage of estimated annual domestic (U.S.) usage

+ References

No definition available.

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- Definition

Aggregate notional amount of price risk derivatives for instruments with notional amounts expressed in percentage of estimated annual domestic (U.S.) usage

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No definition available.

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- Definition

Aggregate notional amount of price risk derivatives for instruments with notional amounts expressed in percentage of estimated annual domestic (U.S.) usage

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No definition available.

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- Definition

Percentage Of Forecasted Natural Gas Usage Hedged for Year 4

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No definition available.

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- Definition

Aggregate notional amount of price risk derivatives for instruments with notional amounts expressed in percentage of annual estimated usage in production

+ References

No definition available.

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- 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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- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 30

-Section 50

-Paragraph 1

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=35736893&loc=d3e80748-113994

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- Definition

The amount of cash received during the period on settlement of a hedge.

+ References

No definition available.

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- Definition

Amount of increase (decrease) in the fair value of derivatives recognized in the income statement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 4A

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5618551-113959

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-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 4C

-Subparagraph (a),(c),(d),(e)

-URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5624171-113959

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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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No definition available.

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- Definition

The effective portion of net gain (loss) reclassified from accumulated other comprehensive income into income on derivative instruments designated and qualifying 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

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5624171-113959

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 4D

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5624177-113959

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- Definition

The portion of gains and losses (net) on derivative instruments designated and qualifying as hedging instruments representing (a) the amount of the hedge ineffectiveness and (b) the amount, if any, excluded from the assessment of hedge effectiveness.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 4C

-Subparagraph (d)

-URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5624171-113959

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 25

-Section 50

-Paragraph 1

-Subparagraph (a)(1),(2)

-URI http://asc.fasb.org/extlink&oid=6886632&loc=d3e76258-113986

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- Definition

The effective portion of gains and losses (net) on derivative instruments designated and qualifying as hedging instruments that was recognized in other comprehensive income during the current period.

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- Definition

Nominal mass used to calculate payments on a derivative instrument.

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Derivative Financial Instruments and Hedging (Details) € in Millions, lb in Millions, $ in Millions	3 Months Ended				9 Months Ended
	Sep. 30, 2015 USD ($)	Mar. 31, 2015 USD ($)	Mar. 31, 2015 EUR (€)	Sep. 30, 2014 USD ($)	Sep. 30, 2015 USD ($) lb	Sep. 30, 2015 EUR (€) lb	Sep. 30, 2014 USD ($)
Notional Disclosures [Abstract]
Percentage of estimated annual nickel requirements					25.00%	25.00%
Percentage of forecasted natural gas usage hedged for 2015					95.00%	95.00%
Percentage Of Forecasted Natural Gas Usage Hedged for 2016					90.00%	90.00%
Percentage Of Forecasted Natural Gas Usage Hedged for 2017					55.00%	55.00%
Percentage Of Forecasted Natural Gas Usage Hedged for 2018					15.00%	15.00%
Reclassification of Cash Flow Hedge Gain (Loss) [Abstract]
Cash Flow Hedge Gain (Loss) To Be Reclassified Within Twelve Months					$ (13.2)
Other Comprehensive Income \| Cash Flow Hedging
Derivative Instruments Gain Loss [Line Items]
Derivative Instruments Gain Loss Recognized In Other Comprehensive Income Effective Portion Net	$ (16.5)			$ 17.2	(11.5)		$ 30.8
Cost Of Sales \| Cash Flow Hedging
Derivative Instruments Gain Loss [Line Items]
Derivative Instruments Gain Loss Reclassified From Accumulated OCI Into Income Effective Portion Net	2.0			1.6	5.0		0.6
Selling And Administrative Expenses \| Cash Flow Hedging
Derivative Instruments Gain Loss [Line Items]
Derivative Instruments Gain Loss Recognized In Income Ineffective Portion And Amount Excluded From Effectiveness Testing Net	0.0			0.0	$ 0.0		0.0
Nickel
Derivative Instruments Gain Loss [Line Items]
Notional amount of nickel hedge (in pounds of nickel) \| lb					27	27
Nickel and other raw material contracts \| Other Comprehensive Income \| Cash Flow Hedging
Derivative Instruments Gain Loss [Line Items]
Derivative Instruments Gain Loss Recognized In Other Comprehensive Income Effective Portion Net	(13.5)			(4.7)	$ (26.6)		5.4
Nickel and other raw material contracts \| Cost Of Sales \| Cash Flow Hedging
Derivative Instruments Gain Loss [Line Items]
Derivative Instruments Gain Loss Reclassified From Accumulated OCI Into Income Effective Portion Net	(2.4)			1.3	(7.0)		0.5
Nickel and other raw material contracts \| Selling And Administrative Expenses \| Cash Flow Hedging
Derivative Instruments Gain Loss [Line Items]
Derivative Instruments Gain Loss Recognized In Income Ineffective Portion And Amount Excluded From Effectiveness Testing Net	0.0			0.0	0.0		0.0
Natural gas contracts \| Other Comprehensive Income \| Cash Flow Hedging
Derivative Instruments Gain Loss [Line Items]
Derivative Instruments Gain Loss Recognized In Other Comprehensive Income Effective Portion Net	(3.7)			(3.0)	(9.5)		(1.7)
Natural gas contracts \| Cost Of Sales \| Cash Flow Hedging
Derivative Instruments Gain Loss [Line Items]
Derivative Instruments Gain Loss Reclassified From Accumulated OCI Into Income Effective Portion Net	(1.6)			0.0	(6.4)		2.4
Natural gas contracts \| Selling And Administrative Expenses \| Cash Flow Hedging
Derivative Instruments Gain Loss [Line Items]
Derivative Instruments Gain Loss Recognized In Income Ineffective Portion And Amount Excluded From Effectiveness Testing Net	0.0			0.0	0.0		0.0
Electricity contracts \| Other Comprehensive Income \| Cash Flow Hedging
Derivative Instruments Gain Loss [Line Items]
Derivative Instruments Gain Loss Recognized In Other Comprehensive Income Effective Portion Net	0.0			(0.2)	0.0		0.6
Electricity contracts \| Cost Of Sales \| Cash Flow Hedging
Derivative Instruments Gain Loss [Line Items]
Derivative Instruments Gain Loss Reclassified From Accumulated OCI Into Income Effective Portion Net	0.0			(0.1)	(0.1)		0.4
Electricity contracts \| Selling And Administrative Expenses \| Cash Flow Hedging
Derivative Instruments Gain Loss [Line Items]
Derivative Instruments Gain Loss Recognized In Income Ineffective Portion And Amount Excluded From Effectiveness Testing Net	0.0			0.0	0.0		0.0
Foreign exchange contracts \| Other Comprehensive Income \| Cash Flow Hedging
Derivative Instruments Gain Loss [Line Items]
Derivative Instruments Gain Loss Recognized In Other Comprehensive Income Effective Portion Net	0.7			25.1	24.6		26.5
Foreign exchange contracts \| Cost Of Sales \| Cash Flow Hedging
Derivative Instruments Gain Loss [Line Items]
Derivative Instruments Gain Loss Reclassified From Accumulated OCI Into Income Effective Portion Net	6.0			0.4	18.5		(2.7)
Foreign exchange contracts \| Selling And Administrative Expenses \| Cash Flow Hedging
Derivative Instruments Gain Loss [Line Items]
Derivative Instruments Gain Loss Recognized In Income Ineffective Portion And Amount Excluded From Effectiveness Testing Net	0.0			0.0	0.0		0.0
Designated as Hedging Instrument \| Foreign exchange forward \| Cash Flow Hedging
Derivative Instruments Gain Loss [Line Items]
Notional amount of derivatives net settled \| €						€ 222.5
Cash proceeds from settlement of hedge					51.0
Designated as Hedging Instrument \| Foreign exchange forward \| Cost Of Sales \| Fair Value Hedging
Derivative Instruments Gain Loss [Line Items]
Derivative Instruments Gain Loss Recognized In Income Net	(1.8)				5.6
Designated as Hedging Instrument \| Foreign exchange forward \| Maturity dates Through 2018
Derivative Instruments Gain Loss [Line Items]
Notional amount of derivative \| €						257.0
Designated as Hedging Instrument \| Foreign exchange forward \| Maturity Dates Through 2015
Derivative Instruments Gain Loss [Line Items]
Notional amount of derivative \| €						54.0
Designated as Hedging Instrument \| Foreign exchange forward \| Maturity Dates Through 2016 \| Fair Value Hedging
Derivative Instruments Gain Loss [Line Items]
Notional amount of derivative \| €						130.5
Derivative, Notional Amount, Contract Entered During Period \| €						211.0
Not Designated as Hedging Instrument \| Foreign exchange forward
Derivative Instruments Gain Loss [Line Items]
Notional amount of derivatives net settled \| €			€ 40.3
Cash proceeds from settlement of hedge		$ 11.8
Not Designated as Hedging Instrument \| Foreign exchange forward \| Maturity Dates Through 2016
Derivative Instruments Gain Loss [Line Items]
Notional amount of derivative \| €			€ 33.0			€ 32.0
Not Designated as Hedging Instrument \| Foreign exchange contracts \| Cost Of Sales
Derivative Instruments Gain Loss [Line Items]
Derivative Instruments Gain Loss Recognized In Income Net	$ 0.0			$ 3.1	$ 3.0		$ 4.2