SCHEDULE II (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Jan. 31, 2012	Jan. 31, 2011	Jan. 31, 2010
Allowance for Doubtful Accounts
Balance at the Beginning of Year	$ 4.2	$ 4.6	$ 8.6
Valuation Allowances and Reserves, Charged to Cost and Expense	2.4	(0.3)	1.7
Deductions and Write-Offs	1.1	0.1	5.7
Balance at End of Year	5.5	4.2	4.6
Allowance for Sales Returns
Balance at the Beginning of Year	10.6	11.8	12.5
Valuation Allowances and Reserves, Charged to Cost and Expense	32.7	38.9	42.9
Deductions and Write-Offs	37.5	40.1	43.6
Balance at End of Year	5.8	10.6	11.8
Business Restructuring Reserves
Balance at the Beginning of Year	8.6	19.4	43.9
Valuation Allowances and Reserves, Charged to Cost and Expense	0	13.7	48.9
Deductions and Write-Offs	6.2	24.5	73.4
Balance at End of Year	$ 2.4	$ 8.6	$ 19.4