Financial Instruments (Details Textual) (USD $) In Millions, unless otherwise specified	3 Months Ended	12 Months Ended
Jun. 30, 2011	Jun. 30, 2010	Mar. 31, 2011
Financial Instruments (Textuals) [Abstract]
Redemption of available-for-sale holdings by issuers of auction rate securities	$ 0.2	$ 10.8
Redemption of trading holdings by Issuers of auction rate securities		5.4
Total estimated fair value of auction rate securities	26.8		27.2
Guarantee by the federal government for bonds issued by public agencies	97.00%		97.00%
Value of securities exercised under put option agreement		11.2
Unrealized loss on available-for-sale auction rate securities	2.8
Foreign currency forward contracts that closed in a gain position	1.5		5.8
Foreign currency forward contracts that closed in a loss position	2.7		3.3
Net effect of foreign currency forward contracts after including gains and losses on foreign currency exposure	(1.0)	(2.2)
Trade finance receivables transferred to financial institutions on a non-recourse basis	11.1	109.0
Finance receivables	231.8
Special finance receivables fully reserved	0.3
Carrying value of the senior unsecured notes due 2018	298.8		298.7
Senior Notes [Member]
Financial Instruments (Additional) (Textuals) [Abstract]
Fair value of the senior unsecured notes due 2018	348.2		348.9
Forward Contracts [Member]
Financial Instruments (Additional) (Textuals) [Abstract]
Effect of foreign currency forward contracts	(3.7)	11.5
Auction Rate Securities [Member]
Financial Instruments (Additional) (Textuals) [Abstract]
Available-for-sale securities in auction rate securities held	29.6		29.8
Fair Value of Available-for-sale auction rate securities	26.8
Financial Instruments (Textuals) [Abstract]
Fair Value of Available-for-sale auction rate securities	$ 26.8

Auction rate securities estimated fair value.

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- Definition

Finance Receivables.

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- Definition

Financial Instruments Additional Textuals Abstract.

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- Definition

Guarantee for bonds issued by public agencies

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- Definition

Par value of available for sale auction rate securities.

+ Details

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- Definition

Redemption of Holdings By Issuers Of Auction Rate Securities.

+ Details

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- Definition

Redemption of trading holdings by issuers of auction rate securities.

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- Definition

Specific Finance Receivables Fully Reserved.

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- Definition

Trade finance receivables transferred to financial institutions, non-recourse basis.

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- Definition

Unrealized Loss Available For Sale Auction Rate Securities.

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- Definition

Value of securities exercised under put option agreement.

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- Definition

This element represents the portion of the balance sheet assertion valued at fair value by the entity 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. This item represents Available-for-sale Securities which consist of all investments in certain debt and equity securities neither classified as trading or held-to-maturity securities. A debt security represents a creditor relationship with an enterprise. Debt securities include, among other items, US Treasury securities, US government securities, municipal securities, corporate bonds, convertible debt, commercial paper, and all securitized debt instruments. An equity security represents an ownership interest in an enterprise or the right to acquire or dispose of an ownership interest in an enterprise at fixed or determinable prices. Equity securities include, among other things, common stock, certain preferred stock, warrant rights, call options, and put options, but do not include convertible debt. An entity may opt to provide the reader with additional narrative text to better understand the nature of investments in debt and equity securities which are categorized as Available-for-sale.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 115
-Paragraph 12
-Subparagraph b

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- Definition

The amount of net gains and losses recognized in income during the period on derivative instruments designated and qualifying as hedging instruments in fair value hedges and related hedged items designated and qualifying in fair value hedges, on derivative instruments designated and qualifying as hedging instruments in cash flow hedges, and on derivative instruments not designated as hedging instruments.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 133
-Paragraph 205G

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 133
-Paragraph 44C
-Subparagraph b

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The aggregate foreign currency transaction gain or loss (both realized and unrealized) included in determining net income for the reporting period. Excludes foreign currency transactions designated as hedges of net investment in a foreign entity and intercompany foreign currency transactions that are of a long-term nature, when the entities to the transaction are consolidated, combined, or accounted for by the equity method in the reporting enterprise's financial statements. For certain enterprises, primarily banks, that are dealers in foreign exchange, foreign currency transaction gains or losses may be disclosed as dealer gains or losses.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 52
-Paragraph 30

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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 19, 20, 22
-Article 5

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 129
-Paragraph 2, 4

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Carrying value as of the balance sheet date of Notes with the highest claim on the assets of the issuer in case of bankruptcy or liquidation (with maturities initially due after one year or beyond the operating cycle if longer), excluding current portion. Senior note holders are paid off in full before any payments are made to junior note holders.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 22
-Article 5

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