CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Jan. 31, 2016	Jan. 31, 2015	Jan. 31, 2014
Net revenue:
License and other	$ 1,226.9	$ 1,341.4	$ 1,254.9
Subscription	1,277.2	1,170.8	1,019.0
Total net revenue	2,504.1	2,512.2	2,273.9
Cost of revenue:
Cost of license and other revenue	214.6	208.5	178.7
Cost of subscription revenue	156.1	133.6	95.6
Total cost of revenue	370.7	342.1	274.3
Gross profit	2,133.4	2,170.1	1,999.6
Operating expenses:
Marketing and sales	1,015.5	998.0	842.6
Research and development	790.0	725.2	611.1
General and administrative	293.4	283.3	211.8
Amortization of purchased intangibles	33.2	39.8	36.5
Restructuring charges, net	0.0	3.1	12.8
Total operating expenses	2,132.1	2,049.4	1,714.8
Income from operations	1.3	120.7	284.8
Interest and other expense, net	(21.6)	(37.7)	(4.9)
(Loss) income before income taxes	(20.3)	83.0	279.9
Provision for income taxes	(310.2)	(1.2)	(51.1)
Net (loss) income	$ (330.5)	$ 81.8	$ 228.8
Basic net (loss) income per share (usd per share)	$ (1.46)	$ 0.36	$ 1.02
Diluted net (loss) income per share (usd per share)	$ (1.46)	$ 0.35	$ 1.00
Weighted average shares used in computing basic net (loss) income per share	226.0	227.1	224.0
Weighted average shares used in computing diluted net (loss) income per share	226.0	232.4	229.6