CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Apr. 30, 2017	Apr. 30, 2016
Net revenue:
Maintenance	$ 263.6	$ 284.4
Subscription	173.4	85.5
Total maintenance and subscription revenue	437.0	369.9
License and other	48.7	142.0
Total net revenue	485.7	511.9
Cost of revenue:
Cost of maintenance and subscription revenue	54.9	46.6
Cost of license and other revenue	18.6	34.9
Amortization of developed technology	4.7	10.9
Total cost of revenue	78.2	92.4
Gross profit	407.5	419.5
Operating expenses:
Marketing and sales	255.7	240.8
Research and development	187.7	193.5
General and administrative	78.3	74.7
Amortization of purchased intangibles	5.7	7.9
Restructuring (benefits) charges and other facility exit costs, net	(0.3)	52.3
Total operating expenses	527.1	569.2
Loss from operations	(119.6)	(149.7)
Interest and other expense, net	(1.8)	(3.6)
Loss before income taxes	(121.4)	(153.3)
Provision for income taxes	(8.2)	(14.4)
Net loss	$ (129.6)	$ (167.7)
Basic net loss per share (in usd per share)	$ (0.59)	$ (0.75)
Diluted net loss per share (in usd per share)	$ (0.59)	$ (0.75)
Weighted average shares used in computing basic net loss per share (shares)	219.9	224.4
Weighted average shares used in computing diluted net loss per share (shares)	219.9	224.4