Condensed Consolidated Statements of Earnings and Comprehensive Income (Loss) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Mar. 31, 2016	Mar. 31, 2015
Income Statement [Abstract]
Net sales	$ 611.2	$ 651.1	$ 1,106.3	$ 1,188.2
Cost of products sold	300.1	316.8	567.7	597.1
Gross profit	311.1	334.3	538.6	591.1
Selling, general and administrative expense	99.7	149.2	200.1	282.7
Advertising and sales promotion expense	85.0	78.4	131.6	129.1
Research and development expense	16.7	16.0	32.7	31.7
Venezuela deconsolidation charge	0.0	79.3	0.0	79.3
Spin restructuring charges	0.0	22.8	0.0	24.0
2013 restructuring charges	5.0	6.6	23.5	15.8
Industrial sale charges	0.2	0.0	0.2	0.0
Interest expense	17.8	28.1	35.5	55.9
Other income, net	(4.6)	(1.3)	(7.0)	(1.7)
Earnings (loss) from continuing operations before income taxes	91.3	(44.8)	122.0	(25.7)
Income tax provision	25.2	9.8	32.2	9.0
Earnings (loss) from continuing operations	66.1	(54.6)	89.8	(34.7)
(Loss) earnings from discontinued operations, net of tax	0.0	(33.8)	0.0	51.4
Net earnings (loss)	$ 66.1	$ (88.4)	$ 89.8	$ 16.7
Basic earnings (loss) per share from continuing operations (in usd per share)	$ 1.11	$ (0.88)	$ 1.51	$ (0.56)
Basic (loss) earnings per share from discontinued operations, net of tax (in usd per share)	0.00	(0.54)	0.00	0.83
Basic earnings (loss) per share (in usd per share)	1.11	(1.42)	1.51	0.27
Diluted earnings (loss) per share from continuing operations (in usd per share)	1.10	(0.88)	1.49	(0.56)
Diluted (loss) earnings per share from discontinued operations, net of tax (in usd per share)	0.00	(0.54)	0.00	0.82
Diluted earnings (loss) per share (in usd per share)	$ 1.10	$ (1.42)	$ 1.49	$ 0.27
Condensed Consolidated Statements of Comprehensive Income (Loss)
Net earnings (loss)	$ 66.1	$ (88.4)	$ 89.8	$ 16.7
Other comprehensive income (loss), net of tax
Foreign currency translation adjustments	17.8	(77.1)	7.3	(139.4)
Pension and postretirement activity, net of tax	(6.5)	6.1	(6.0)	10.4
Deferred (loss) gain on hedging activity, net of tax	(4.3)	4.6	(6.2)	9.2
Total other comprehensive income (loss), net of tax	7.0	(66.4)	(4.9)	(119.8)
Total comprehensive income (loss)	$ 73.1	$ (154.8)	$ 84.9	$ (103.1)