Segment and Geographic Information - Net Sales Mix By Primary Product Categories (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Revenue from External Customer [Line Items]
Net sales	$ 3,939.3	$ 3,754.1
Cigarettes
Revenue from External Customer [Line Items]
Net sales	2,582.7	2,467.5
Food
Revenue from External Customer [Line Items]
Net sales	399.5	381.6
Fresh
Revenue from External Customer [Line Items]
Net sales	120.5	110.7
Candy
Revenue from External Customer [Line Items]
Net sales	256.4	237.3
OTP
Revenue from External Customer [Line Items]
Net sales	360.0	330.0
Health, beauty & general
Revenue from External Customer [Line Items]
Net sales	180.0	187.4
Beverages
Revenue from External Customer [Line Items]
Net sales	39.7	39.4
Equipment/other
Revenue from External Customer [Line Items]
Net sales	0.5	0.2
Total food/non-food products
Revenue from External Customer [Line Items]
Net sales	$ 1,356.6	$ 1,286.6