Property, plant and equipment (Tables)

12 Months Ended

Dec. 31, 2019

Property Plant and Equipment Income Statement Disclosures [Abstract]

Schedule of Property, Plant and Equipment

Property, plant and equipment are stated at cost less accumulated depreciation and impairments. Depreciation is computed using the straight-line method over the following estimated useful lives:

Buildings	31-39 years
Building improvements	10-39 years
Furniture and equipment	3-15 years
Software	3-7 years or product life
Leasehold improvements	Lesser of the asset life or lease term

Property, plant and equipment consist of the following:

	December 31,
(in millions)	2019			2018
Land and improvements	$	46.5		$	44.6
Buildings, building improvements and leasehold improvements	234.8			216.2
Furniture and equipment	334.2			293.9
Software	55.7			55.2
Construction-in-progress	81.5			71.8
	752.7			681.7
Less: Accumulated depreciation and amortization	(210.4		)	(171.5		)
Total property, plant and equipment, net	$	542.3		$	510.2