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Business and Summary of Significant Accounting Policies - Schedule of Other Segments (Details) - USD ($) $ in Millions | 12 Months Ended
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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

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