CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Apr. 30, 2019	Apr. 30, 2018
Net revenue:
Total net revenue	$ 735.5	$ 559.9
Cost of revenue:
Amortization of developed technology	9.2	3.6
Total cost of revenue	82.7	66.8
Gross profit	652.8	493.1
Operating expenses:
Marketing and sales	313.3	276.4
Research and development	205.6	172.8
General and administrative	99.1	72.9
Amortization of purchased intangibles	9.8	3.8
Restructuring and other exit costs, net	0.2	22.5
Total operating expenses	628.0	548.4
Income (loss) from operations	24.8	(55.3)
Interest and other expense, net	(16.2)	(8.5)
Income (loss) before income taxes	8.6	(63.8)
Provision for income taxes	(32.8)	(18.6)
Net loss	$ (24.2)	$ (82.4)
Basic net loss per share (in usd per share)	$ (0.11)	$ (0.38)
Diluted net loss per share (in usd per share)	$ (0.11)	$ (0.38)
Weighted average shares used in computing basic net loss per share (shares)	219.6	218.6
Weighted average shares used in computing diluted net loss per share (shares)	219.6	218.6
Subscription and Maintenance
Net revenue:
Total net revenue	$ 707.8	$ 531.6
Cost of revenue:
Cost of revenue	59.7	50.4
Subscription
Net revenue:
Total net revenue	595.8	350.4
Maintenance
Net revenue:
Total net revenue	112.0	181.2
Other
Net revenue:
Total net revenue	27.7	28.3
Cost of revenue:
Cost of revenue	$ 13.8	$ 12.8