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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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Expenditures for planning and executing the conception, pricing, promotion, and distribution of ideas, goods, and services. Costs of public relations and corporate promotions are typically considered to be marketing costs.

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