Commitments and Contingencies (Details) - USD ($) $ in Millions |
3 Months Ended | |
|---|---|---|
Apr. 30, 2018 |
Jan. 31, 2018 |
|
| Financial Guarantee | ||
| Loss Contingencies | ||
| Guarantor Obligations, Maximum Exposure, Undiscounted | $ 2.8 | $ 3.3 |
| Brazil | ||
| Loss Contingencies | ||
| Loss Contingency, Estimate of Possible Loss | 21.8 | |
| SPAIN | ||
| Loss Contingencies | ||
| Loss Contingency Accrual | $ 10.7 | |
| Europe | SPAIN | Interest Expense | ||
| Loss Contingencies | ||
| Loss Contingency Accrual, Period Increase (Decrease) | $ (0.9) |