Income Taxes (NOL and Tax Credit Valuation Allowances) (Details) - USD ($) $ in Millions |
12 Months Ended | ||
---|---|---|---|
Jul. 31, 2025 |
Jul. 31, 2024 |
Jul. 31, 2023 |
|
Valuation Allowance, Deferred Tax Asset | |||
Balance as of beginning of year | $ (9.1) | ||
Balance as of end of year | (30.0) | $ (9.1) | |
Net Operating Loss And Tax Credit | |||
Valuation Allowance, Deferred Tax Asset | |||
Balance as of beginning of year | (9.1) | (6.4) | $ (3.4) |
Additions charged to costs and expenses | (14.0) | (3.6) | (3.0) |
Deductions from reserves | 0.4 | 0.9 | 0.0 |
Balance as of end of year | $ (22.7) | $ (9.1) | $ (6.4) |