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Segments - Schedule of Segment Reporting Information, by Segment (Details) - USD ($) | 3 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017
Segment Reporting Information [Line Items] |  |
Net sales | $ 571,900,000 | $ 573,300,000
Segment Profit | 275,500,000 | 278,300,000
Research and development expense | (5,500,000) | (5,300,000)
Amortization of intangible assets | (3,200,000) | (2,800,000)
Acquisition and integration costs | 51,300,000 |
Other items, net | 2,100,000 | (1,300,000)
Earnings before income taxes | 90,000,000 | 119,000,000
Operating Segments |  |
Segment Reporting Information [Line Items] |  |
Segment Profit | 170,700,000 | 172,300,000
Segment Reconciling Items |  |
Segment Reporting Information [Line Items] |  |
General corporate and other expenses | (18,700,000) | (21,600,000)
Global marketing expense | (3,100,000) | (3,200,000)
Research and development expense | (5,500,000) | (5,300,000)
Amortization of intangible assets | (3,200,000) | (2,800,000)
Acquisition and integration costs | 36,500,000 | 5,700,000
Interest and other financing items | (15,800,000) | (13,400,000)
Americas |  |
Segment Reporting Information [Line Items] |  |
Net sales | 373,500,000 | 373,100,000
Americas | Operating Segments |  |
Segment Reporting Information [Line Items] |  |
Net sales | 373,500,000 | 373,100,000
Segment Profit | 116,100,000 | 123,100,000
International |  |
Segment Reporting Information [Line Items] |  |
Net sales | 198,400,000 | 200,200,000
International | Operating Segments |  |
Segment Reporting Information [Line Items] |  |
Net sales | 198,400,000 | 200,200,000
Segment Profit | 54,600,000 | 49,200,000
Selling, General and Administrative Expenses |  |
Segment Reporting Information [Line Items] |  |
Global marketing expense | 0 | 0
Acquisition and integration costs | 18,900,000 | 5,700,000
Advertising and Sales Promotion Expense |  |
Segment Reporting Information [Line Items] |  |
Global marketing expense | 0 | $ 0
Interest Expense |  |
Segment Reporting Information [Line Items] |  |
Interest and other financing items | 32,400,000 |
Acquisition-related Costs |  |
Segment Reporting Information [Line Items] |  |
Acquisition and integration costs | 0 |
Other items, net | $ 14.8 |

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