Summary of significant accounting policies - Fiscal Quarter (Details) |
9 Months Ended | |
|---|---|---|
Nov. 03, 2018 |
Oct. 28, 2017 |
|
| Summary of significant accounting policies | ||
| Fiscal period | 91 days | 91 days |
| X | ||||||||||
- References No definition available.
|
| X | ||||||||||
- Definition Duration of a fiscal period, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Includes, but not limited to, weeks in a year or quarter. No definition available.
|