Income Taxes (Details) (Scenario, Forecast [Member], USD $) In Millions, unless otherwise specified	9 Months Ended
Dec. 31, 2012	Dec. 31, 2011	Mar. 31, 2012
Scenario, Forecast [Member]
Income Tax Contingency [Line Items]
Effective tax rate	274.60%	7283.50%
Full valuation allowances recorded	$ 86.7
Unrecognized tax benefits decreased more than value	41.5
Unrecognized tax benefits decreased less than value	41.0
Recognized amount affect company effective tax rate	36.0
Accrued interest and penalties on unrecognized tax benefits	2.4		3.0
Uncertain tax benefit would affect effective tax rate	$ 0.3

The domestic federal statutory tax rate applicable under enacted tax laws to the Company's pretax income from continuing operations for the period. The "statutory" tax rate is the regular tax rate if there are alternative tax systems.

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The portion of the deferred tax asset arising from some other tax carryforward for which it is more likely than not that a tax benefit will not be realized.

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- Definition

This element represents the total of accruals as of the date of the statement of financial position for interest recognized for an underpayment of income taxes computed by applying the applicable statutory rate of interest to the difference between a tax position recognized for financial reporting purposes and the amount previously taken or expected to be taken in a tax return of the entity and the amount of statutory penalties for a tax position claimed or expected to be claimed by the entity, in its tax return, that does not meet the minimum statutory threshold to avoid payment of penalties.

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