Segment and Geographic Information - Net Sales Mix By Primary Product Categories (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Revenue from External Customer [Line Items]
Net sales	$ 3,011.3	$ 2,452.3
Total food/non-food products
Revenue from External Customer [Line Items]
Net sales	896.7	807.0
Cigarettes
Revenue from External Customer [Line Items]
Net sales	2,114.6	1,645.3
Food
Revenue from External Customer [Line Items]
Net sales	388.3	353.7
Candy
Revenue from External Customer [Line Items]
Net sales	140.7	131.8
Other tobacco products
Revenue from External Customer [Line Items]
Net sales	237.5	199.6
Health, beauty & general
Revenue from External Customer [Line Items]
Net sales	95.7	89.5
Beverages
Revenue from External Customer [Line Items]
Net sales	34.3	32.1
Equipment/other
Revenue from External Customer [Line Items]
Net sales	$ 0.2	$ 0.3