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Derivatives And Hedging Activities (Narrative) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Mar. 31, 2014	Mar. 31, 2012 Interest Rate Swap [Member]	Mar. 31, 2014 Foreign Exchange Forward [Member]	Mar. 31, 2012 Settled On Maturity [Member] Interest Rate Swap [Member]	Mar. 31, 2012 Settled Prior To Maturity [Member] Interest Rate Swap [Member]	Mar. 31, 2011 Fair Value Hedging [Member] Interest Rate Swap [Member]	Mar. 31, 2014 Cash Flow Hedges [Member] Interest Rate Swap [Member]
Derivative [Line Items]
Derivative, Notional Amount			$ 189.5	$ 50.0	$ 195.0	$ 245.0	$ 81.3
Aggregate gain on the termination of interest rate swap agreements		13
Net unrealized loss on foreign currency derivatives designated as cash flow hedges	$ 1.4

X

- 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

+ Details

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X

- Definition

Amount as of the balance sheet date of the unamortized adjustment to the carrying value of an interest-bearing hedged item made under an effective fair value hedge that is amortized upon discontinuation of the fair value hedge.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 25

-Section 35

-Paragraph 9

-URI http://asc.fasb.org/extlink&oid=6439857&loc=d3e75592-113984

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- Details

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X

- Definition

Amount of unrealized loss recorded in accumulated other comprehensive income pertaining to the decrease in fair value of foreign currency exchange rate derivatives designated as cash flow hedging instruments to the extent that a cash flow hedge is determined to be effective.

+ 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 (b)

-URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5624171-113959

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