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- Definition

Pre-tax loss on settlement of Union VEBA

+ References

No definition available.

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- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 275

-SubTopic 10

-Section 50

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The total amount of net periodic benefit cost for defined benefit plans for the period. Periodic benefit costs include the following components: service cost, interest cost, expected return on plan assets, gain (loss), prior service cost or credit, transition asset or obligation, and gain (loss) due to settlements or curtailments.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

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-SubTopic 20

-Section 50

-Paragraph 1

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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 net change in the difference between the fair value and the carrying value, or in the comparative fair values, of derivative instruments, including options, swaps, futures, and forward contracts, held at each balance sheet date, that was included in earnings for the period.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

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-Section 45

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Segment Information, Textuals (Details) $ in Millions	3 Months Ended		9 Months Ended		12 Months Ended
Segment Information, Textuals (Details) $ in Millions	Sep. 30, 2015 USD ($)	Sep. 30, 2014 USD ($)	Sep. 30, 2015 USD ($) productionfacilities	Sep. 30, 2014 USD ($)	Dec. 31, 2014
Segment Reporting Information
Unrealized gains (losses) on derivatives			$ (7.7)	$ 3.6
Net periodic postretirement benefit cost relating to Salaried VEBA	$ 0.6	$ (6.0)	1.8	(17.7)
Fabricated Products
Segment Reporting Information
Unrealized gains (losses) on derivatives	$ (1.7)	$ (3.5)	$ (7.7)	$ 0.0
United States
Segment Reporting Information
Number of production facilities \| productionfacilities			11
Canada
Segment Reporting Information
Number of production facilities \| productionfacilities			1
Customer Concentration Risk \| Largest Customer \| Sales Revenue, Net \| Fabricated Products
Segment Reporting Information
Concentration Risk, Percentage	25.00%	25.00%	25.00%	26.00%
Customer Concentration Risk \| Largest Customer \| Accounts Receivable
Segment Reporting Information
Concentration Risk, Percentage			17.00%		10.00%
Customer Concentration Risk \| Second Largest Customer \| Accounts Receivable
Segment Reporting Information
Concentration Risk, Percentage					12.00%
VEBAs
Segment Reporting Information
Net periodic postretirement benefit cost relating to Salaried VEBA	$ 0.6	$ (6.0)	$ 1.8	$ (17.7)
Pre-tax loss on settlement of Union VEBA	$ (2.9)	$ 0.0	$ 490.9	$ 0.0