CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jul. 31, 2020	Jul. 31, 2019	Jul. 31, 2020	Jul. 31, 2019
Net revenue:
Total net revenue	$ 913.1	$ 796.8	$ 1,798.8	$ 1,532.3
Cost of revenue:
Amortization of developed technology	7.4	8.6	14.8	17.8
Total cost of revenue	80.9	79.5	162.8	162.2
Gross profit	832.2	717.3	1,636.0	1,370.1
Operating expenses:
Marketing and sales	350.9	316.8	692.2	630.1
Research and development	232.5	215.4	449.9	421.0
General and administrative	93.2	101.4	198.0	200.5
Amortization of purchased intangibles	9.5	9.7	19.2	19.5
Restructuring and other exit costs, net	0.0	0.2	0.0	0.4
Total operating expenses	686.1	643.5	1,359.3	1,271.5
Income from operations	146.1	73.8	276.7	98.6
Interest and other expense, net	(17.1)	(7.3)	(57.2)	(23.5)
Income before income taxes	129.0	66.5	219.5	75.1
Provision for income taxes	(30.8)	(26.3)	(54.8)	(59.1)
Net income	$ 98.2	$ 40.2	$ 164.7	$ 16.0
Basic net income (loss) per share (in usd per share)	$ 0.45	$ 0.18	$ 0.75	$ 0.07
Diluted net income (loss) per share (in usd per share)	$ 0.44	$ 0.18	$ 0.74	$ 0.07
Weighted average shares used in computing basic net income (loss) per share (in shares)	219.2	219.6	219.2	219.6
Weighted average shares used in computing diluted net income (loss) per share (in shares)	222.2	222.4	222.0	222.3
Subscription and Maintenance
Net revenue:
Total net revenue	$ 892.4	$ 767.2	$ 1,757.5	$ 1,475.0
Cost of revenue:
Cost of revenue	58.5	53.0	115.9	112.7
Subscription
Net revenue:
Total net revenue	841.2	663.7	1,644.2	1,259.5
Maintenance
Net revenue:
Total net revenue	51.2	103.5	113.3	215.5
Other
Net revenue:
Total net revenue	20.7	29.6	41.3	57.3
Cost of revenue:
Cost of revenue	$ 15.0	$ 17.9	$ 32.1	$ 31.7