Goodwill and Intangible Assets, net - Narrative (Details) - USD ($)	3 Months Ended		9 Months Ended
	Oct. 31, 2022	Oct. 31, 2021	Oct. 31, 2022	Oct. 31, 2021	Jan. 31, 2022
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill	$ 5,400,275,000		$ 5,400,275,000		$ 5,401,343,000
Goodwill impairments	0	$ 0	0	$ 0
Intangible amortization expense	$ 23,300,000	$ 22,400,000	$ 69,200,000	$ 46,600,000