Segment Information - (Details) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2018	Mar. 31, 2017
Summary of Segment Information
Total net sales		$ 1,064.2	$ 1,102.8
Operating profit (loss)		(21.0)	(48.6)
Impairment of assets		0.0	3.1
Restructuring charges		(3.9)	(12.9)
Other expense		(22.9)	(26.2)
Income (loss) from continuing operations before taxes		(43.9)	(74.8)
Services and software		711.7	683.6
Systems		352.5	419.2
Operating Segments [Member]
Summary of Segment Information
Operating profit (loss)		55.7	82.6
Operating Segments [Member] | Services Segment [Member]
Summary of Segment Information
Total net sales		592.2	573.2
Operating profit (loss)		73.8	81.2
Operating Segments [Member] | Software Segment [Member]
Summary of Segment Information
Total net sales		119.5	110.4
Operating profit (loss)		7.4	5.3
Operating Segments [Member] | Systems Segment [Member]
Summary of Segment Information
Total net sales		352.5	419.2
Operating profit (loss)		(25.5)	(3.9)
Corporate and Reconciling Items [Member]
Summary of Segment Information
Operating profit (loss)		(76.7)	(131.2)
Corporate, Non-Segment [Member]
Summary of Segment Information
Operating profit (loss)	[1]	(37.5)	(40.9)
Segment Reconciling Items [Member]
Summary of Segment Information
Restructuring charges		(3.9)	(12.9)
Net non-routine expense		$ (35.3)	$ (77.4)

[1] Corporate charges not allocated to segments include headquarter-based costs associated with procurement, human resources, compensation and benefits, finance and accounting, global development/engineering, global strategy/mergers and acquisitions, global information technology, tax, treasury and legal.