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Indebtedness (Details) (USD $) In Millions, unless otherwise specified			3 Months Ended
	Jun. 30, 2013	Mar. 31, 2013	Jun. 30, 2013 Domestic Revolving Credit Facility [Member]	Jun. 30, 2013 Foreign Credit Facility [Member]	Jun. 30, 2013 Letters of Credit [Member]	Jun. 30, 2013 6.8% Senior Notes [Member]
Debt Instrument [Line Items]
Long-term debt						$ 125.0
Stated interest rate (in hundredths)						6.80%
Short-term debt	33.2	30.6
Long-term debt, fair value	137.0	139.0
Line of Credit Facility [Line Items]
Amount outstanding			0
Maximum borrowing capacity			145.0
Letters of credit outstanding					7.0
Expiration date			Aug. 31, 2014
Available for future borrowings	$ 190.0		$ 138.0	$ 52.0

X

- Definition

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

+ References

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-Publisher SEC

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- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

+ References

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- Definition

Amount borrowed under the credit facility as of the balance sheet date.

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- Definition

Date the credit facility terminates, in CCYY-MM-DD format.

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- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

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Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

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Reflects the total carrying amount as of the balance sheet date of debt having initial terms less than one year or the normal operating cycle, if longer.

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