ABL Credit Facility (Details) |
Oct. 31, 2018
USD ($)
|
|---|---|
| Letter of Credit | |
| Line of Credit Facility [Line Items] | |
| Letters of credit collateralized by the credit facility | $ 61,700,000 |
| Revolving Credit Facility | |
| Line of Credit Facility [Line Items] | |
| Current borrowing capacity | 250,000,000 |
| Line of credit outstanding | $ 0 |