Restructuring (Narrative) (Details) $ in Millions	12 Months Ended
	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($) employee	Dec. 31, 2014 USD ($) employee
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 0.0	$ (7.8)	$ (29.2)
Business Combination, Integration Related Costs	0.0	$ 7.2	9.8
2014 Repositioning Actions [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges			$ (18.9)
Restructuring and Related Cost, Expected Number of Positions Eliminated | employee			320
2015 Repositioning Actions [Member] [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Number of Positions Eliminated | employee		125
Acquisition Related Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges			$ (10.3)
Payment and Merchandising Technologies [Member] | Acquisition Related Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve	2.7	$ 6.3
cash-related restructuring [Member] | 2014 Repositioning Actions [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve		1.3
cash-related restructuring [Member] | 2015 Repositioning Actions [Member] [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve	$ 1.2	$ 4.2