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Financial Instruments (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
FX forward contracts and FX embedded derivatives
Derivative disclosures
Net gain (loss) recorded related to derivatives	$ 0.5	$ (0.2)	$ (37.0)
FX forward contracts
Derivative disclosures
Aggregate notional amount	191.3	107.3
Unrealized gain (loss), net of tax, recorded in AOCI related to commodity and FX forward contracts	(1.0)	(3.4)
Percentage of strength of U.S. Dollar against GBP from inception of agreement	4.00%
Cash payment resulting from settlement of contracts			34.6
FX embedded derivatives
Derivative disclosures
Aggregate notional amount	145.8	96.3
Derivative contracts maturities in 2014	88.7
Derivative contracts maturities in 2015	44.8
Derivative contracts maturities in 2016	11.0
Derivative contracts maturities thereafter	1.3
Commodity contracts
Derivative disclosures
Unrealized gain (loss), net of tax, recorded in AOCI related to commodity and FX forward contracts	0.2	0.1
Notional amount of commodity contracts (in pounds of copper)	3,400,000	3,300,000
Fair value of derivative contract	$ 0.4	$ 0.2

X

- Definition

Represents the amount of derivative contracts maturing within the next twelve months, following the date of the latest balance sheet presented in the financial statements.

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- Definition

Represents the amount of derivative contracts maturing in year three, following the date of the latest balance sheet presented in the financial statements.

+ References

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- Definition

Represents the amount of derivative contracts maturing in year two, following the date of the latest balance sheet presented in the financial statements.

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- Definition

Represents the amount of derivative contracts maturing after the third fiscal year following the date of the latest balance sheet presented in the financial statements.

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- Definition

Represents the aggregate notional amount of price risk derivatives for instruments with notional amounts expressed in nonmonetary units.

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- Definition

Represents the amount by which the U.S. Dollar strengthened against the British Pound from the date of entering into the Clyde Union purchase agreement and the date the FX forward contracts were settled.

+ References

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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

The difference between the book value and the sale price of options, swaps, futures, forward contracts, and other derivative instruments. This element refers to the gain (loss) included in earnings.

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-Number 95

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Aggregate notional amount of foreign currency exchange rate derivatives. Notional amount refers to the number of currency units specified in the foreign currency derivative contract.

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-Glossary Notional Amount

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- Definition

The cash outflow for a financial contract that meets the hedge criteria as either cash flow hedge, fair value hedge or hedge of net investment in foreign operations.

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 95

-Paragraph 14

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Fair value as of the balance sheet date of all price risk derivative assets designated as cash flow hedging instruments.

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