Segment and Geographic Information - Net Sales Mix By Primary Product Categories (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Revenue from External Customer [Line Items]
Net sales	$ 4,502.6	$ 4,422.6	$ 12,705.8	$ 12,515.7
Cigarettes
Revenue from External Customer [Line Items]
Net sales	3,000.2	2,880.0	8,475.5	8,181.5
Food
Revenue from External Customer [Line Items]
Net sales	424.3	476.8	1,186.8	1,314.6
Fresh
Revenue from External Customer [Line Items]
Net sales	139.4	135.8	381.8	376.1
Candy
Revenue from External Customer [Line Items]
Net sales	259.1	269.7	759.3	782.8
OTP
Revenue from External Customer [Line Items]
Net sales	403.6	370.4	1,154.5	1,068.9
Health, beauty & general
Revenue from External Customer [Line Items]
Net sales	212.5	226.0	594.8	630.3
Beverages
Revenue from External Customer [Line Items]
Net sales	64.1	63.9	153.2	160.2
Equipment/other
Revenue from External Customer [Line Items]
Net sales	(0.6)	0.0	(0.1)	1.3
Total food/non-food products
Revenue from External Customer [Line Items]
Net sales	$ 1,502.4	$ 1,542.6	$ 4,230.3	$ 4,334.2