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Significant Event (Tables) | 12 Months Ended
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Jan. 31, 2018
Subsequent Events [Abstract] |
Schedule of dividends payable | For fiscal 2019, the annual dividend will be paid in four quarterly installments of $0.52 per share, according to the following record and payable dates:
Record Date |  | Payable Date
March 9, 2018 |  | April 2, 2018
May 11, 2018 |  | June 4, 2018
August 10, 2018 |  | September 4, 2018
December 7, 2018 |  | January 2, 2019

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- Definition Tabular disclosure of all or some of the information related to dividends declared, but not paid, as of the financial reporting date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=98513485&loc=d3e4304-108586 + Details
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