CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jul. 31, 2021	Jul. 31, 2020	Jul. 31, 2021	Jul. 31, 2020
Net revenue:
Total net revenue	$ 1,059.7	$ 913.1	$ 2,049.0	$ 1,798.8
Cost of revenue:
Amortization of developed technologies	13.6	7.4	23.8	14.8
Total cost of revenue	105.4	80.9	198.2	162.8
Gross profit	954.3	832.2	1,850.8	1,636.0
Operating expenses:
Marketing and sales	398.8	350.9	775.9	692.2
Research and development	276.9	232.5	542.4	449.9
General and administrative	119.4	93.2	231.3	198.0
Amortization of purchased intangibles	11.1	9.5	19.3	19.2
Total operating expenses	806.2	686.1	1,568.9	1,359.3
Income from operations	148.1	146.1	281.9	276.7
Interest and other expense, net	(9.3)	(17.1)	(11.7)	(57.2)
Income before income taxes	138.8	129.0	270.2	219.5
(Provision) benefit for income taxes	(23.2)	(30.8)	1.0	(54.8)
Net income	$ 115.6	$ 98.2	$ 271.2	$ 164.7
Basic net income per share (in usd per share)	$ 0.53	$ 0.45	$ 1.23	$ 0.75
Diluted net income per share (in usd per share)	$ 0.52	$ 0.44	$ 1.22	$ 0.74
Weighted average shares used in computing basic net income per share (in shares)	219.8	219.2	219.7	219.2
Weighted average shares used in computing diluted net income per share (in shares)	222.5	222.2	222.2	222.0
Subscription and Maintenance
Net revenue:
Total net revenue	$ 1,033.6	$ 892.4	$ 2,000.2	$ 1,757.5
Cost of revenue:
Cost of revenue	76.0	58.5	144.5	115.9
Subscription
Net revenue:
Total net revenue	1,016.7	841.2	1,964.2	1,644.2
Maintenance
Net revenue:
Total net revenue	16.9	51.2	36.0	113.3
Other
Net revenue:
Total net revenue	26.1	20.7	48.8	41.3
Cost of revenue:
Cost of revenue	$ 15.8	$ 15.0	$ 29.9	$ 32.1