Business and Summary of Significant Accounting Policies - Schedule of Other Segments (Details) - USD ($) $ in Millions	12 Months Ended
	Jan. 31, 2025	Jan. 31, 2024	Jan. 31, 2023
Accounting Policies [Abstract]
Interest income	$ 85.0	$ 91.0	$ 21.0
Interest expense	71.0	71.0	83.0
Depreciation, amortization, and accretion	180.0	139.0	150.0
Amortization of costs to obtain a contract with a customer	$ 212.0	$ 140.0	$ 138.0