SCHEDULE II (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Jan. 31, 2013	Jan. 31, 2012	Jan. 31, 2011
Allowance for Doubtful Accounts
Balance at the Beginning of Year	$ 5.5	$ 4.2	$ 4.6
Valuation Allowances and Reserves, Charged to Cost and Expense	1.5	2.4	(0.3)
Deductions and Write-Offs	1.4	1.1	0.1
Balance at End of Year	5.6	5.5	4.2
Allowance for Sales Returns
Balance at the Beginning of Year	5.8	10.6	11.8
Valuation Allowances and Reserves, Charged to Cost and Expense	25.8	32.7	38.9
Deductions and Write-Offs	26.7	37.5	40.1
Balance at End of Year	4.9	5.8	10.6
Business Restructuring Reserves
Balance at the Beginning of Year	2.4	8.6	19.4
Valuation Allowances and Reserves, Charged to Cost and Expense	45.1	0	13.7
Deductions and Write-Offs	38.6	6.2	24.5
Balance at End of Year	$ 8.9	$ 2.4	$ 8.6