Revenue - Costs Capitalized to Obtain Contracts with Customers (Details) - USD ($)	12 Months Ended
	Jan. 31, 2026	Jan. 31, 2025	Jan. 31, 2024
Revenue from Contract with Customer [Abstract]
Capitalized contract costs	$ 373,200,000	$ 363,400,000
Noncurrent capitalized contract cost	241,700,000	250,700,000
Capitalized contract cost, amortization	136,800,000	112,600,000	$ 99,500,000
Impairment loss for capitalized costs	$ 0	$ 0	$ 0