COMBINED STATEMENTS OF EARNINGS AND COMPREHENSIVE INCOME (Condensed) (Unaudited) - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2020	Mar. 31, 2019
Income Statement [Abstract]
Net sales	$ 587.0	$ 556.4	$ 1,323.8	$ 1,128.3
Cost of products sold	351.4	362.2	786.9	658.6
Gross profit	235.6	194.2	536.9	469.7
Selling, general and administrative expense	116.1	141.3	238.2	245.9
Advertising and sales promotion expense	22.8	24.7	69.6	65.6
Research and development expense	8.3	8.7	17.2	14.2
Amortization of intangible assets	14.2	12.5	28.0	15.7
Interest expense	47.2	77.2	98.2	125.4
Total Other items, net	5.1	3.8	5.1	(13.1)
Earnings before income taxes	21.9	(74.0)	80.6	16.0
Income tax provision/(benefit)	8.2	(11.7)	21.1	7.5
Net earnings/(loss) from continuing operations	13.7	(62.3)	59.5	8.5
Net loss from discontinued operations, net of income tax benefit of $13.7 and $6.2 for the quarter and six months ended March 31, 2020, respectively, and a benefit of $2.9 for the quarter and six months ended March 31, 2019	(131.4)	(11.0)	(131.1)	(11.0)
Net loss	(117.7)	(73.3)	(71.6)	(2.5)
Mandatory convertible preferred stock dividends	(4.1)	(3.3)	(8.1)	(3.3)
Net loss attributable to common shareholders	$ (121.8)	$ (76.6)	$ (79.7)	$ (5.8)
Basic net (loss)/earnings per common share- continuing operations (in dollars per share)	$ 0.14	$ (0.97)	$ 0.74	$ 0.08
Basic net loss per common share- discontinued operations (in dollars per share)	(1.90)	(0.17)	(1.89)	(0.17)
Basic net (loss)/earnings per common share (in dollars per share)	(1.76)	(1.14)	(1.15)	(0.09)
Diluted net (loss)/earnings per common share- continuing operations (in dollars per share)	0.14	(0.97)	0.74	0.08
Diluted net loss per common share- discontinued operations (in dollars per share)	(1.89)	(0.17)	(1.88)	(0.17)
Diluted net (loss)/earnings per common share (in dollars per share)	$ (1.75)	$ (1.14)	$ (1.14)	$ (0.09)
Weighted average shares of common stock - Basic (shares)	69.1	67.3	69.1	63.5
Weighted average shares of common stock - Diluted (shares)	69.5	67.3	69.8	64.6
Statements of Comprehensive Income:
Net loss	$ (117.7)	$ (73.3)	$ (71.6)	$ (2.5)
Other comprehensive (loss)/income, net of tax expense/(benefit)
Foreign currency translation adjustments	(35.2)	20.3	(5.2)	16.6
Pension activity, net of tax of $1.2 and $1.7 for the quarter and six months ended March 31, 2020, and $0.3 and $0.6, for the quarter and six months ended March 31, 2019 respectively.	5.4	1.0	5.2	2.1
Deferred loss on hedging activity, net of tax of ($1.2) and ($2.2) for the quarter and six months ended March 31, 2020, respectively, and ($0.8) and ($1.8) for the quarter and six months ended March 31, 2019, respectively.	(4.2)	(1.1)	(8.8)	(4.4)
Total comprehensive (loss)/gain	$ (151.7)	$ (53.1)	$ (80.4)	$ 11.8