Segment Information (Long-Lived Assets By Geographic Area) (Details) - USD ($) $ in Millions	Sep. 30, 2018	Sep. 30, 2017
Revenues from External Customers and Long-Lived Assets [Line Items]
Total long-lived assets	$ 494.9	$ 503.9
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total long-lived assets	355.5	361.9
Europe/MEA [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total long-lived assets	77.8	71.8
Latin America [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total long-lived assets	20.8	25.4
North America - Other [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total long-lived assets	1.4	1.9
Asia-Pacific [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total long-lived assets	39.4	42.9
SB/RH [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total long-lived assets	494.9	503.1
SB/RH [Member] | United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total long-lived assets	355.5	361.1
SB/RH [Member] | Europe/MEA [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total long-lived assets	77.8	71.8
SB/RH [Member] | Latin America [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total long-lived assets	20.8	25.4
SB/RH [Member] | North America - Other [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total long-lived assets	1.4	1.9
SB/RH [Member] | Asia-Pacific [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total long-lived assets	$ 39.4	$ 42.9