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Restructuring charges and other facility exit costs, net (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended |  |  |
--- | --- | --- | --- | --- | ---
Oct. 31, 2016 | Oct. 31, 2015 | Oct. 31, 2016 | Oct. 31, 2015 | Oct. 31, 2016 | Feb. 29, 2016 | Jan. 31, 2016
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |
Restructuring costs expected completion date |  |  |  | 2017 |  |  |  |
Restructuring Reserve [Roll Forward] |  |  |  |  |  |  |  |
Beginning Balance |  |  |  | $ 0.0 |  |  |  |
Additions |  | $ 3.2 | $ 0.0 | 71.5 | $ 0.0 |  |  |
Payments |  |  |  | (57.5) |  |  |  |
Adjustments | [1] |  |  | (5.4) |  |  |  |
Ending Balance |  | 8.6 |  | 8.6 |  |  |  |
Current portion | [2] |  |  |  |  | $ 7.0 |  | $ 0.0
Non-current portion | [2] |  |  |  |  | 1.6 |  | 0.0
Total Restructuring Reserve |  | 8.6 |  | 0.0 |  | 8.6 |  | 0.0
Lease termination and other exit costs |  |  |  |  |  |  |  |
Restructuring Reserve [Roll Forward] |  |  |  |  |  |  |  |
Additions |  |  |  | 7.4 |  |  |  |
Payments |  |  |  | (1.0) |  |  |  |
Adjustments | [1] |  |  | (3.5) |  |  |  |
Ending Balance |  | 2.9 |  | 2.9 |  |  |  |
Total Restructuring Reserve |  | 2.9 |  | 2.9 |  | 2.9 |  |
Fiscal 2017 Plan | Employee termination costs |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |
Expected cost |  |  |  |  |  |  | $ 65.0 |
Restructuring Reserve [Roll Forward] |  |  |  |  |  |  |  |
Beginning Balance |  |  |  | 0.0 |  |  |  |
Additions |  | 2.8 |  | 58.5 |  |  |  |
Payments |  |  |  | (54.0) |  |  |  |
Adjustments | [1] |  |  | 0.0 |  |  |  |
Ending Balance |  | 4.5 |  | 4.5 |  |  |  |
Total Restructuring Reserve |  | 4.5 |  | 0.0 |  | 4.5 |  | 0.0
Fiscal 2017 Plan | Lease termination and other exit costs |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |
Expected cost |  |  |  |  |  |  | $ 7.0 |
Restructuring Reserve [Roll Forward] |  |  |  |  |  |  |  |
Beginning Balance |  |  |  | 0.0 |  |  |  |
Additions |  | 0.4 |  | 5.6 |  |  |  |
Payments |  |  |  | (2.5) |  |  |  |
Adjustments | [1] |  |  | (1.9) |  |  |  |
Ending Balance |  | 1.2 |  | 1.2 |  |  |  |
Total Restructuring Reserve |  | $ 1.2 |  | $ 0.0 |  | $ 1.2 |  | $ 0.0
[1] | Adjustments include the impact of computer equipment, software, furniture, straight-line rent and leasehold improvement write-offs, and foreign currency translation.
[2] | The current and non-current portions of the reserve are recorded in the Condensed Consolidated Balance Sheets under “Other accrued liabilities” and “Other liabilities,” respectively.

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