|
Income Taxes Unrecognized Tax Benefits Reconciliation, Table (Details) (USD $)
In Millions, unless otherwise specified |
12 Months Ended | ||
|---|---|---|---|
|
Jan. 31, 2014
|
Jan. 31, 2013
|
Jan. 31, 2012
|
|
| Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward] | |||
| Gross unrecognized tax benefits at the beginning of the fiscal year | $ 212.7 | $ 201.1 | $ 188.4 |
| Increases for tax positions of prior years | 1.8 | 0.4 | 0.4 |
| Decreases for tax positions of prior years | (0.3) | (0.4) | (0.4) |
| Increases for tax positions related to the current year | 15.3 | 17.8 | 14.3 |
| Decreases for lapse of statute of limitations/audit settlements | (7.4) | (6.2) | (1.6) |
| Gross unrecognized tax benefits at the end of the fiscal year | $ 222.1 | $ 212.7 | $ 201.1 |