Segment Information - (Details) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Summary of Segment Information
Net sales		$ 1,122.7	$ 983.3	$ 3,359.4	$ 2,072.9
Operating profit (loss)		(7.6)	(86.7)	(86.3)	(82.1)
Impairment of assets		0.0	0.0	3.1	0.0
Restructuring charges		(17.4)	(7.4)	(44.7)	(12.8)
Other expense		(21.7)	(29.3)	(77.7)	(49.7)
Income (loss) from continuing operations before taxes		(29.3)	(116.0)	(164.0)	(131.8)
Services and software		725.7	571.0	2,097.2	1,270.5
Systems		397.0	412.3	1,262.2	802.4
Operating Segments [Member]
Summary of Segment Information
Operating profit (loss)		98.6	80.1	263.0	176.9
Operating Segments [Member] | Services Segment [Member]
Summary of Segment Information
Net sales		605.9	484.6	1,759.3	1,131.1
Operating profit (loss)		88.8	77.5	247.0	211.5
Operating Segments [Member] | Software Segment [Member]
Summary of Segment Information
Net sales		119.8	86.4	337.9	139.4
Operating profit (loss)		11.1	7.6	22.8	(0.5)
Operating Segments [Member] | Systems Segment [Member]
Summary of Segment Information
Net sales		397.0	412.3	1,262.2	802.4
Operating profit (loss)		(1.3)	(5.0)	(6.8)	(34.1)
Corporate and Reconciling Items [Member]
Summary of Segment Information
Operating profit (loss)		(106.2)	(166.8)	(349.3)	(259.0)
Corporate, Non-Segment [Member]
Summary of Segment Information
Operating profit (loss)	[1]	(16.1)	(32.2)	(98.4)	(86.7)
Segment Reconciling Items [Member]
Summary of Segment Information
Restructuring charges		(17.4)	(7.4)	(44.7)	(12.8)
Net non-routine expense		$ (72.7)	$ (127.2)	$ (206.2)	$ (159.5)

[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.