Revenue - Schedule of disaggregated revenue (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2018
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net Sales	$ 328.1	$ 638.5
Advanced Plastic Processing Technologies
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net Sales	170.4	332.3
Melt Delivery and Control Systems
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net Sales	124.1	240.6
Fluid Technologies
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net Sales	33.6	65.6
North America
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net Sales	158.9	301.3
North America | Advanced Plastic Processing Technologies
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net Sales	110.9	204.7
North America | Melt Delivery and Control Systems
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net Sales	34.8	70.6
North America | Fluid Technologies
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net Sales	13.2	26.0
Europe
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net Sales	63.2	129.0
Europe | Advanced Plastic Processing Technologies
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net Sales	16.4	36.4
Europe | Melt Delivery and Control Systems
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net Sales	33.4	66.6
Europe | Fluid Technologies
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net Sales	13.4	26.0
China
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net Sales	48.5	89.5
China | Advanced Plastic Processing Technologies
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net Sales	5.3	11.4
China | Melt Delivery and Control Systems
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net Sales	39.7	71.8
China | Fluid Technologies
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net Sales	3.5	6.3
India
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net Sales	32.0	68.0
India | Advanced Plastic Processing Technologies
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net Sales	27.8	59.7
India | Melt Delivery and Control Systems
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net Sales	3.8	7.6
India | Fluid Technologies
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net Sales	0.4	0.7
Other
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net Sales	25.5	50.7
Other | Advanced Plastic Processing Technologies
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net Sales	10.0	20.1
Other | Melt Delivery and Control Systems
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net Sales	12.4	24.0
Other | Fluid Technologies
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net Sales	3.1	6.6
Automotive
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net Sales	48.5	99.1
Automotive | Advanced Plastic Processing Technologies
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net Sales	19.7	41.8
Automotive | Melt Delivery and Control Systems
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net Sales	20.9	42.6
Automotive | Fluid Technologies
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net Sales	7.9	14.7
Packaging
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net Sales	50.3	98.1
Packaging | Advanced Plastic Processing Technologies
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net Sales	39.8	76.2
Packaging | Melt Delivery and Control Systems
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net Sales	10.5	21.8
Packaging | Fluid Technologies
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net Sales	0.0	0.1
Consumer goods
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net Sales	41.8	78.6
Consumer goods | Advanced Plastic Processing Technologies
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net Sales	21.6	37.7
Consumer goods | Melt Delivery and Control Systems
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net Sales	18.6	37.9
Consumer goods | Fluid Technologies
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net Sales	1.6	3.0
Electronics
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net Sales	35.7	62.7
Electronics | Advanced Plastic Processing Technologies
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net Sales	13.1	24.5
Electronics | Melt Delivery and Control Systems
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net Sales	20.7	34.5
Electronics | Fluid Technologies
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net Sales	1.9	3.7
Medical
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net Sales	15.6	29.5
Medical | Advanced Plastic Processing Technologies
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net Sales	7.2	13.5
Medical | Melt Delivery and Control Systems
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net Sales	8.2	15.6
Medical | Fluid Technologies
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net Sales	0.2	0.4
Construction
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net Sales	23.6	49.6
Construction | Advanced Plastic Processing Technologies
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net Sales	23.2	48.7
Construction | Melt Delivery and Control Systems
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net Sales	0.4	0.9
Construction | Fluid Technologies
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net Sales	0.0	0.0
Custom molders
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net Sales	32.3	56.9
Custom molders | Advanced Plastic Processing Technologies
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net Sales	21.2	40.6
Custom molders | Melt Delivery and Control Systems
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net Sales	11.1	16.3
Custom molders | Fluid Technologies
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net Sales	0.0	0.0
Industrial machinery and other
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net Sales	80.3	164.0
Industrial machinery and other | Advanced Plastic Processing Technologies
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net Sales	24.6	49.3
Industrial machinery and other | Melt Delivery and Control Systems
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net Sales	33.7	71.0
Industrial machinery and other | Fluid Technologies
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net Sales	$ 22.0	$ 43.7