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Interest and Other Expense, net | 12 Months Ended
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Jan. 31, 2018
Interest and Other Income, net [Abstract] |
Interest and Other Expense, net | Interest and Other Expense, net Interest and other expense, net, consists of the following:
| Fiscal Year Ended January 31,
| 2018 |  | 2017 |  | 2016
Interest and investment expense, net | $ | (34.5 | ) |  | $ | (29.7 | ) |  | $ | (33.9 | )
Loss on foreign currency | (3.3 | ) |  | (3.3 | ) |  | — |
(Loss) gain on strategic investments | (16.4 | ) |  | 0.3 |  |  | 3.8 |
Other income | 6.0 |  |  | 8.5 |  |  | 8.5 |
Interest and other expense, net | $ | (48.2 | ) |  | $ | (24.2 | ) |  | $ | (21.6 | )

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- Definition The entire disclosure for other income or other expense items (both operating and nonoperating). Sources of nonoperating income or nonoperating expense that may be disclosed, include amounts earned from dividends, interest on securities, profits (losses) on securities, net and miscellaneous other income or income deductions. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 720 -URI http://asc.fasb.org/topic&trid=2122503 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 610 -URI http://asc.fasb.org/topic&trid=49130413 + Details
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