Consolidated Statements of Comprehensive Income (Parenthetical) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Mar. 31, 2023 |
Mar. 31, 2022 |
Mar. 31, 2023 |
Mar. 31, 2022 |
|
| Statement of Comprehensive Income [Abstract] | ||||
| Pension and postretirement, tax | $ (1.3) | $ 0.7 | $ (1.5) | $ 1.4 |
| Change in net unrealized gain (loss) on derivative instruments, tax | $ (0.4) | $ 1.2 | $ 3.3 | $ 1.9 |
| X | ||||||||||
- Definition Net Unrealized Gain (Loss) on Derivative Instruments, Tax Effect No definition available.
|
| X | ||||||||||
- Definition Amount, after reclassification adjustment, of tax (expense) benefit for (increase) decrease in accumulated other comprehensive income of defined benefit plan. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- References No definition available.
|