CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Oct. 31, 2021	Oct. 31, 2020	Oct. 31, 2021	Oct. 31, 2020
Net revenue:
Total net revenue	$ 1,125.8	$ 952.4	$ 3,174.8	$ 2,751.2
Cost of revenue:
Amortization of developed technologies	14.6	7.6	38.4	22.4
Total cost of revenue	107.1	83.7	305.3	246.5
Gross profit	1,018.7	868.7	2,869.5	2,504.7
Operating expenses:
Marketing and sales	419.4	359.3	1,195.3	1,051.5
Research and development	282.1	233.0	824.5	682.9
General and administrative	112.8	98.8	344.1	296.8
Amortization of purchased intangibles	11.1	9.6	30.4	28.8
Total operating expenses	825.4	700.7	2,394.3	2,060.0
Income from operations	193.3	168.0	475.2	444.7
Interest and other expense, net	(5.9)	(11.9)	(17.6)	(69.1)
Income before income taxes	187.4	156.1	457.6	375.6
Provision for income taxes	(50.7)	(23.9)	(49.7)	(78.7)
Net income	$ 136.7	$ 132.2	$ 407.9	$ 296.9
Basic net income per share (in usd per share)	$ 0.62	$ 0.60	$ 1.86	$ 1.35
Diluted net income per share (in usd per share)	$ 0.61	$ 0.59	$ 1.83	$ 1.34
Weighted average shares used in computing basic net income per share (in shares)	220.0	219.6	219.8	219.4
Weighted average shares used in computing diluted net income per share (in shares)	222.5	222.3	222.3	222.1
Subscription and Maintenance
Net revenue:
Total net revenue	$ 1,088.3	$ 924.2	$ 3,088.5	$ 2,681.7
Cost of revenue:
Cost of revenue	74.8	60.7	219.3	176.6
Subscription
Net revenue:
Total net revenue	1,070.7	884.4	3,034.9	2,528.6
Maintenance
Net revenue:
Total net revenue	17.6	39.8	53.6	153.1
Other
Net revenue:
Total net revenue	37.5	28.2	86.3	69.5
Cost of revenue:
Cost of revenue	$ 17.7	$ 15.4	$ 47.6	$ 47.5