Segment and Geographic Information - Net Sales By Product Categories (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Segment Reporting Information [Line Items]
Net sales	$ 4,154.8	$ 4,422.6	$ 4,339.0	$ 3,754.1	$ 4,089.7	$ 4,273.2	$ 4,226.5	$ 3,805.9	$ 16,670.5	$ 16,395.3	$ 15,687.6
Total food/non-food products
Segment Reporting Information [Line Items]
Net sales	1,443.6	1,542.6	1,505.0	1,286.6	1,370.0	1,398.6	1,383.8	1,268.4	5,777.8	5,420.8	4,800.2
Cigarettes
Segment Reporting Information [Line Items]
Net sales	$ 2,711.2	$ 2,880.0	$ 2,834.0	$ 2,467.5	$ 2,719.7	$ 2,874.6	$ 2,842.7	$ 2,537.5	10,892.7	10,974.5	10,887.4
Food
Segment Reporting Information [Line Items]
Net sales									1,746.4	1,659.0	1,561.1
Fresh
Segment Reporting Information [Line Items]
Net sales									502.8	474.2	436.3
Candy
Segment Reporting Information [Line Items]
Net sales									1,039.0	992.0	833.4
Other tobacco products
Segment Reporting Information [Line Items]
Net sales									1,438.9	1,387.2	1,272.3
Health, beauty & general
Segment Reporting Information [Line Items]
Net sales									847.2	711.5	513.3
Beverages
Segment Reporting Information [Line Items]
Net sales									202.1	191.0	183.4
Equipment/other
Segment Reporting Information [Line Items]
Net sales									$ 1.4	$ 5.9	$ 0.4