COMBINED STATEMENTS OF EARNINGS AND COMPREHENSIVE INCOME (Condensed) (Unaudited) - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Income Statement [Abstract]
Net sales	$ 721.8	$ 658.0	$ 2,255.5	$ 1,981.8
Cost of products sold	448.5	394.8	1,373.8	1,181.7
Gross profit	273.3	263.2	881.7	800.1
Selling, general and administrative expense	117.5	112.8	365.4	351.0
Advertising and sales promotion expense	44.1	37.3	120.8	106.9
Research and development expense	8.2	8.4	24.8	25.6
Amortization of intangible assets	15.2	14.3	46.0	42.3
Interest expense	38.6	50.8	125.0	144.8
Loss on extinguishment of debt	27.6	0.0	103.3	4.2
Total Other items, net	(1.5)	0.7	(0.8)	5.8
Loss / (earnings) before income taxes	23.6	38.9	97.2	119.5
Income tax provision	2.8	9.9	19.5	31.0
Net earnings from continuing operations		29.0	77.7	88.5
Net earnings/(loss) from discontinued operations, net of income tax benefit of $0.4 and $6.6 for the quarter and nine months ended June 30, 2020		0.8	0.0	(130.3)
Net earnings/(loss)	20.8	29.8	77.7	(41.8)
Mandatory preferred stock dividends	(4.0)	(4.0)	(12.1)	(12.1)
Net earnings/(loss) attributable to common shareholders	$ 16.8	$ 25.8	$ 65.6	$ (53.9)
Basic net (loss)/earnings per common share- continuing operations (in dollars per share)	$ 0.25	$ 0.37	$ 0.96	$ 1.11
Basic net loss per common share- discontinued operations (in dollars per share)	0	0.01	0	(1.89)
Basic net (loss)/earnings per common share (in dollars per share)	0.25	0.38	0.96	(0.78)
Diluted net (loss)/earnings per common share- continuing operations (in dollars per share)	0.24	0.37	0.95	1.10
Diluted net loss per common share- discontinued operations (in dollars per share)	0	0.01	0	(1.88)
Diluted net (loss)/earnings per common share (in dollars per share)	$ 0.24	$ 0.38	$ 0.95	$ (0.78)
Weighted average shares of common stock - Basic (shares)	68.4	68.5	68.4	68.9
Weighted average shares of common stock - Diluted (shares)	68.6	68.7	68.7	69.4
Statements of Comprehensive Income:
Net earnings/(loss)	$ 20.8	$ 29.8	$ 77.7	$ (41.8)
Other comprehensive income/(loss), net of tax expense/(benefit)
Foreign currency translation adjustments	(1.4)	2.0	24.8	(3.2)
Pension activity, net of tax of $0 and $1.3 for the quarter and nine months ended June 30, 2021, respectively, and $0.5 and $2.2 for the quarter and nine months ended June 30, 2020, respectively.	1.4	1.1	3.4	6.3
Deferred (loss)/gain on hedging activity, net of tax of ($1.1) and $4.7 for the quarter and nine months ended June 30, 2021, respectively and ($0.6) and ($2.8) for the quarter and nine months ended June 30, 2020, respectively.	(3.6)	(1.3)	15.2	(10.1)
Total comprehensive income/(loss)	$ 17.2	$ 31.6	$ 121.1	$ (48.8)