Property, plant and equipment (Details) - USD ($) $ in Millions	Mar. 31, 2019	Dec. 31, 2018
Property, plant and equipment [Abstract]
Property, plant and equipment, gross	$ 697.2	$ 681.7
Less: Accumulated depreciation and amortization	(183.8)	(171.5)
Total property, plant and equipment, net	513.4	510.2
Land and improvements
Property, plant and equipment [Abstract]
Property, plant and equipment, gross	44.3	44.6
Buildings, building improvements and leasehold improvements
Property, plant and equipment [Abstract]
Property, plant and equipment, gross	223.4	216.2
Furniture and equipment
Property, plant and equipment [Abstract]
Property, plant and equipment, gross	316.8	293.9
Software
Property, plant and equipment [Abstract]
Property, plant and equipment, gross	55.5	55.2
Construction-in-progress
Property, plant and equipment [Abstract]
Property, plant and equipment, gross	$ 57.2	$ 71.8

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

+ References

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Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

+ References

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