Significant Accounting Policies Recent Accounting Pronouncements (Details) (ASU 2013-11, USD $)
In Millions, unless otherwise specified |
12 Months Ended | |
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Mar. 31, 2014
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Mar. 31, 2013
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ASU 2013-11
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Item Effected [Line Items] | ||
Increase in noncurrent deferred income tax liability and reduction in unrecognized tax benefits (within other liabilities) | $ 7.0 | $ 6.3 |