Income Taxes (Narrative) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
Jan. 31, 2012	Jan. 31, 2011	Jan. 31, 2010
Income Tax Contingency [Line Items]
Increase (decrease) in valuation allowance on deferred tax assets	$ (28.0)	$ 0.7	$ 10.2
Foreign net operating loss carryforwards	641.0	686.4
Cumulative undistributed earnings of foreign subsidiaries	207.3
Unrecognized tax benefits that, if recognized, would impact the effective tax rate	2.5	5.1	3.1
Unrecognized tax benefits that have a reasonable possibility of significantly decreasing within the 12 months	2.5
Europe [Member]
Income Tax Contingency [Line Items]
Increase (decrease) in valuation allowance on deferred tax assets	13.6		5.4
Triade Holding B.V. [Member]
Income Tax Contingency [Line Items]
Long-term deferred income tax liability	$ 9.2

The cumulative amount for all deferred tax liabilities as of the balance sheet date arising from temporary differences between accounting income in accordance with generally accepted accounting principles and tax-basis income that will result in future taxable income exceeding future accounting income.

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The tax effect as of the balance sheet date of the amount of excess of tax deductions over gross income in a year which cannot be used on the tax return of a country outside the country of domicile in the current year but can be carried forward to reduce taxable income or income taxes payable in a future year, for which there must be sufficient tax-basis income to utilize a portion or all of the carryforward amount to realize the deferred tax asset.

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- Definition

The amount of the change in the period in the valuation allowance for a specified deferred tax asset.

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