Receivables, net - Schedule of Receivables (Details) - USD ($) $ in Millions	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2014
Accounts, Notes, Loans and Financing Receivable [Line Items]
Trade accounts receivable	$ 571.5	$ 529.4
Less: Allowance for doubtful trade accounts receivable	45.4	46.8	$ 44.0	$ 48.6
Total trade accounts receivable, net	526.1	482.6
Other receivables	43.7	56.5
Total receivables, net	569.8	539.1
Consumer Products Segment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total receivables, net	569.5	538.2
Spectrum Brands [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Transfer of Financial Assets Accounted for as Sales, Amount Derecognized	2,141.0	2,055.0	1,938.0
Transfer of Financial Assets Accounted for as Sales, Cost of Factoring	$ 11.9	$ 10.1	$ 6.5