| **CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE EARNINGS - USD ($) $ in Millions**                                                        | 3 Months Ended |
|------------------------------------------------------------------------------------------------------------------------------------------------|----------------|
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| **Statement of Comprehensive Income [Abstract]**                                                                                               |           |   |
| Net earnings                                                                                                                                   | $ 147.6        | $ 126.9 |
| **Other comprehensive earnings (loss)**                                                                                                        |           |   |
| Foreign currency translation adjustments                                                                                                       | (4.8)          | 2.5 |
| Unrealized gains (losses) on cash flow derivative instruments, less related income tax (provision) benefit of $(0.3) in 2024, and $0.0 in 2023 | 1.0            | (0.1) |
| Adjustment to pension liability, less related income tax provision of $0.0 in 2024, and $0.0 in 2023                                           | 0.1            | 0.0 |
| Comprehensive Earnings                                                                                                                         | $ 143.9        | $ 129.3 |

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| - Definition
Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.
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| - Definition
The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.
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Amount, after tax and reclassification, of gain (loss) from derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness.
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Amount, after tax and reclassification adjustment, of (increase) decrease in accumulated other comprehensive income for defined benefit plan.
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