CONSOLIDATED STATEMENTS OF EARNINGS AND COMPREHENSIVE INCOME - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2017
Income Statement [Abstract]
Net sales	$ 2,494.5	$ 1,797.7	$ 1,755.7
Cost of products sold	1,490.7	966.8	944.4
Gross profit	1,003.8	830.9	811.3
Selling, general and administrative expense	515.7	421.7	361.3
Advertising and sales promotion expense	127.3	112.9	116.1
Research and development expense	32.8	22.4	22.0
Amortization of intangible assets	43.2	11.5	11.2
Spin restructuring	0.0	0.0	(3.8)
Gain on sale of real estate	0.0	(4.6)	(16.9)
Interest expense	226.0	98.4	53.1
Other items, net	(14.3)	(6.6)	(5.0)
Earnings before income taxes	73.1	175.2	273.3
Income tax provision	8.4	81.7	71.8
Net earnings from continuing operations	64.7	93.5	201.5
Net loss from discontinued operations, net of income tax expense of $4.0	(13.6)	0.0	0.0
Net earnings	51.1	93.5	201.5
Mandatory preferred stock dividends	(12.0)	0.0	0.0
Net earnings attributable to common shareholders	$ 39.1	$ 93.5	$ 201.5
Earnings Per Share
Basic net earnings per common share - continuing operations (in dollars per share)	$ 0.79	$ 1.56	$ 3.27
Basic net loss per common share - discontinued operations (in dollars per share)	(0.20)	0	0
Basic net earnings per common share (in dollars per share)	0.59	1.56	3.27
Diluted net earnings per common share - continuing operations (in dollars per share)	0.78	1.52	3.22
Diluted net loss per common share - discontinued operations (in dollars per share)	(0.20)	0	0
Diluted net earnings per common share (in dollars per share)	$ 0.58	$ 1.52	$ 3.22
Weighted average shares of common stock - Basic (in shares)	66.4	59.8	61.7
Weighted average shares of common stock- Diluted (in shares)	67.3	61.4	62.6
Dividend Per Common Share (in dollars per share)	$ 1.20	$ 1.16	$ 1.10
Statement of Comprehensive Income
Net earnings from continuing operations	$ 51.1	$ 93.5	$ 201.5
Other comprehensive (loss)/income, net of tax (benefit)/expense
Foreign currency translation adjustments	(10.4)	(20.5)	6.3
Pension activity, net of tax of ($12.1) in 2019, $6.3 in 2018, and $9.0 in 2017	(36.9)	22.9	20.5
Deferred (loss)/gain on hedging activity, net of tax of ($3.1) in 2019, $4.4 in 2018, and $1.7 in 2017	(9.2)	15.0	0.5
Total comprehensive (loss)/income	$ (5.4)	$ 110.9	$ 228.8