| **Segment Results (Details) $ in Millions**    | 3 Months Ended |
|------------------------------------------------|----------------|
||
| **Segment Reporting [Abstract]**               |           |   |
| Number of reporting segments | segment         | 2              |   |
| **Segment Reporting Information [Line Items]** |           |   |
| Net sales                                      | $ 977.7        | $ 769.0 |
| Segment earnings                               | 176.5          | 142.2 |
| Corporate expense                              | (3.7)          | 5.0 |
| Interest expense                               | (1.5)          | (1.0) |
| Earnings before income taxes                   | 156.6          | 126.1 |
| Provision for income taxes                     | 36.8           | 28.4 |
| Net Earnings                                   | 119.8          | 97.7 |
| Pension Plan                                   |           |   |
| **Segment Reporting Information [Line Items]** |           |   |
| Pension expense (income)                       | 3.6            | (2.9) |
| Inter-segment                                  |           |   |
| **Segment Reporting Information [Line Items]** |           |   |
| Net sales                                      | (8.4)          | (6.2) |
| Segment earnings                               | (0.1)          | 0.0 |
| Corporate                                      |           |   |
| **Segment Reporting Information [Line Items]** |           |   |
| Corporate expense                              | (18.4)         | (15.1) |
| Corporate | Pension Plan                       |           |   |
| **Segment Reporting Information [Line Items]** |           |   |
| Pension expense (income)                       | 0.3            | (0.6) |
| North America | Pension Plan                   |           |   |
| **Segment Reporting Information [Line Items]** |           |   |
| Pension expense (income)                       | 2.6            | (2.6) |
| North America | Operating Segments             |           |   |
| **Segment Reporting Information [Line Items]** |           |   |
| Net sales                                      | 730.1          | 552.9 |
| Segment earnings                               | 151.8          | 130.4 |
| Rest of World | Operating Segments             |           |   |
| **Segment Reporting Information [Line Items]** |           |   |
| Net sales                                      | 256.0          | 222.3 |
| Segment earnings                               | $ 24.8         | $ 11.8 |

| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |
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| - Definition
Amount of net periodic benefit cost (credit) for defined benefit plan.
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Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest.
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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.
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Amount of the cost of borrowed funds accounted for as interest expense.
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The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.
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The net result for the period of deducting operating expenses from operating revenues.
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