Segment and Geographic Information - Net Sales Mix By Primary Product Categories (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Revenue from External Customer [Line Items]
Net sales	$ 3,800.7	$ 3,687.4	$ 7,304.9	$ 6,698.7
Cigarettes
Revenue from External Customer [Line Items]
Net sales	2,666.2	2,631.1	5,152.9	4,745.7
Food
Revenue from External Customer [Line Items]
Net sales	363.3	357.0	698.3	659.6
Fresh
Revenue from External Customer [Line Items]
Net sales	102.5	97.2	200.1	182.9
Candy
Revenue from External Customer [Line Items]
Net sales	199.5	159.6	352.2	300.3
Other tobacco products
Revenue from External Customer [Line Items]
Net sales	303.2	285.0	581.9	522.5
Health, beauty & general
Revenue from External Customer [Line Items]
Net sales	118.0	106.8	236.1	202.5
Beverages
Revenue from External Customer [Line Items]
Net sales	48.4	49.5	83.9	83.8
Equipment/other
Revenue from External Customer [Line Items]
Net sales	(0.4)	1.2	(0.5)	1.4
Total food/non-food products
Revenue from External Customer [Line Items]
Net sales	$ 1,134.5	$ 1,056.3	$ 2,152.0	$ 1,953.0