Revenue Recognition Revenue by End Market (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Disaggregation of Revenue [Line Items]
Net revenue	$ 695.1	$ 607.5	$ 2,109.9	$ 1,823.3
Plastics
Disaggregation of Revenue [Line Items]
Net revenue	225.8	181.0	630.9	589.6
Automotive
Disaggregation of Revenue [Line Items]
Net revenue	44.9	28.7	123.9	91.8
Chemicals
Disaggregation of Revenue [Line Items]
Net revenue	21.8	21.5	61.1	69.9
Consumer goods
Disaggregation of Revenue [Line Items]
Net revenue	22.4	25.4	69.0	76.6
Food and pharmaceuticals
Disaggregation of Revenue [Line Items]
Net revenue	21.5	19.7	65.1	54.9
Custom molders
Disaggregation of Revenue [Line Items]
Net revenue	28.8	28.4	110.2	66.5
Construction
Disaggregation of Revenue [Line Items]
Net revenue	29.6	23.8	95.7	60.5
Packaging
Disaggregation of Revenue [Line Items]
Net revenue	32.2	20.0	84.4	51.8
Minerals and mining
Disaggregation of Revenue [Line Items]
Net revenue	13.7	15.0	38.0	43.7
Electronics
Disaggregation of Revenue [Line Items]
Net revenue	21.6	20.3	55.3	43.1
Medical
Disaggregation of Revenue [Line Items]
Net revenue	23.1	20.4	65.3	39.7
Death care
Disaggregation of Revenue [Line Items]
Net revenue	137.9	139.9	468.7	405.7
Other industrial
Disaggregation of Revenue [Line Items]
Net revenue	71.8	63.4	242.3	229.5
Advanced Process Solutions
Disaggregation of Revenue [Line Items]
Net revenue	313.4	281.3	905.5	899.0
Advanced Process Solutions | Plastics
Disaggregation of Revenue [Line Items]
Net revenue	225.8	181.0	630.9	589.6
Advanced Process Solutions | Automotive
Disaggregation of Revenue [Line Items]
Net revenue	0.0	0.0	0.0	0.0
Advanced Process Solutions | Chemicals
Disaggregation of Revenue [Line Items]
Net revenue	21.8	21.5	61.1	69.9
Advanced Process Solutions | Consumer goods
Disaggregation of Revenue [Line Items]
Net revenue	0.0	0.0	0.0	0.0
Advanced Process Solutions | Food and pharmaceuticals
Disaggregation of Revenue [Line Items]
Net revenue	21.5	19.7	65.1	54.9
Advanced Process Solutions | Custom molders
Disaggregation of Revenue [Line Items]
Net revenue	0.0	0.0	0.0	0.0
Advanced Process Solutions | Construction
Disaggregation of Revenue [Line Items]
Net revenue	0.0	0.0	0.0	0.0
Advanced Process Solutions | Packaging
Disaggregation of Revenue [Line Items]
Net revenue	0.0	0.0	0.0	0.0
Advanced Process Solutions | Minerals and mining
Disaggregation of Revenue [Line Items]
Net revenue	13.7	15.0	38.0	43.7
Advanced Process Solutions | Electronics
Disaggregation of Revenue [Line Items]
Net revenue	0.0	0.0	0.0	0.0
Advanced Process Solutions | Medical
Disaggregation of Revenue [Line Items]
Net revenue	0.0	0.0	0.0	0.0
Advanced Process Solutions | Death care
Disaggregation of Revenue [Line Items]
Net revenue	0.0	0.0	0.0	0.0
Advanced Process Solutions | Other industrial
Disaggregation of Revenue [Line Items]
Net revenue	30.6	44.1	110.4	140.9
Molding Technology Solutions
Disaggregation of Revenue [Line Items]
Net revenue	243.8	186.3	735.7	518.6
Molding Technology Solutions | Plastics
Disaggregation of Revenue [Line Items]
Net revenue	0.0	0.0	0.0	0.0
Molding Technology Solutions | Automotive
Disaggregation of Revenue [Line Items]
Net revenue	44.9	28.7	123.9	91.8
Molding Technology Solutions | Chemicals
Disaggregation of Revenue [Line Items]
Net revenue	0.0	0.0	0.0	0.0
Molding Technology Solutions | Consumer goods
Disaggregation of Revenue [Line Items]
Net revenue	22.4	25.4	69.0	76.6
Molding Technology Solutions | Food and pharmaceuticals
Disaggregation of Revenue [Line Items]
Net revenue	0.0	0.0	0.0	0.0
Molding Technology Solutions | Custom molders
Disaggregation of Revenue [Line Items]
Net revenue	28.8	28.4	110.2	66.5
Molding Technology Solutions | Construction
Disaggregation of Revenue [Line Items]
Net revenue	29.6	23.8	95.7	60.5
Molding Technology Solutions | Packaging
Disaggregation of Revenue [Line Items]
Net revenue	32.2	20.0	84.4	51.8
Molding Technology Solutions | Minerals and mining
Disaggregation of Revenue [Line Items]
Net revenue	0.0	0.0	0.0	0.0
Molding Technology Solutions | Electronics
Disaggregation of Revenue [Line Items]
Net revenue	21.6	20.3	55.3	43.1
Molding Technology Solutions | Medical
Disaggregation of Revenue [Line Items]
Net revenue	23.1	20.4	65.3	39.7
Molding Technology Solutions | Death care
Disaggregation of Revenue [Line Items]
Net revenue	0.0	0.0	0.0	0.0
Molding Technology Solutions | Other industrial
Disaggregation of Revenue [Line Items]
Net revenue	41.2	19.3	131.9	88.6
Batesville
Disaggregation of Revenue [Line Items]
Net revenue	137.9	139.9	468.7	405.7
Batesville | Plastics
Disaggregation of Revenue [Line Items]
Net revenue	0.0	0.0	0.0	0.0
Batesville | Automotive
Disaggregation of Revenue [Line Items]
Net revenue	0.0	0.0	0.0	0.0
Batesville | Chemicals
Disaggregation of Revenue [Line Items]
Net revenue	0.0	0.0	0.0	0.0
Batesville | Consumer goods
Disaggregation of Revenue [Line Items]
Net revenue	0.0	0.0	0.0	0.0
Batesville | Food and pharmaceuticals
Disaggregation of Revenue [Line Items]
Net revenue	0.0	0.0	0.0	0.0
Batesville | Custom molders
Disaggregation of Revenue [Line Items]
Net revenue	0.0	0.0	0.0	0.0
Batesville | Construction
Disaggregation of Revenue [Line Items]
Net revenue	0.0	0.0	0.0	0.0
Batesville | Packaging
Disaggregation of Revenue [Line Items]
Net revenue	0.0	0.0	0.0	0.0
Batesville | Minerals and mining
Disaggregation of Revenue [Line Items]
Net revenue	0.0	0.0	0.0	0.0
Batesville | Electronics
Disaggregation of Revenue [Line Items]
Net revenue	0.0	0.0	0.0	0.0
Batesville | Medical
Disaggregation of Revenue [Line Items]
Net revenue	0.0	0.0	0.0	0.0
Batesville | Death care
Disaggregation of Revenue [Line Items]
Net revenue	137.9	139.9	468.7	405.7
Batesville | Other industrial
Disaggregation of Revenue [Line Items]
Net revenue	$ 0.0	$ 0.0	$ 0.0	$ 0.0