Segment information - Revenue And Operating Profits (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended	12 Months Ended
	Mar. 31, 2022	Dec. 31, 2022	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Segment Reporting Information [Line Items]
Revenues			$ 4,874.6	$ 4,535.5	$ 4,200.2
Operating profit			425.2	361.3	354.7
Foreign currency transaction gains (losses)			(85.1)	(68.7)	(30.5)
Change in allowance estimate			(12.8)	(22.3)	(3.4)
Chile Antitrust Matter
Segment Reporting Information [Line Items]
Loss contingencies			(0.5)	(1.4)
Uncollectible Receivables
Segment Reporting Information [Line Items]
Change in allowance estimate	$ (16.7)	$ (1.1)
Reportable Segments:
Segment Reporting Information [Line Items]
Revenues			4,874.6	4,535.5	4,200.2
Operating profit			754.6	699.1	627.0
Corporate expenses:
Segment Reporting Information [Line Items]
General, administrative and other expenses			(152.8)	(161.5)	(141.7)
Foreign currency transaction gains (losses)			15.3	10.9	2.7
Reconciliation of segment policies to GAAP			(2.1)	1.8	(17.5)
Other items not allocated to segments:
Segment Reporting Information [Line Items]
Reorganization and Restructuring			(17.6)	(38.8)	(43.6)
Acquisitions and dispositions			(70.6)	(86.6)	(71.9)
Transformation initiatives			(5.5)	0.0	0.0
Reporting compliance			(0.8)	0.0	0.0
Other items not allocated to segments: | Non-routine Auto Loss Matter
Segment Reporting Information [Line Items]
Loss contingencies			(8.0)	0.0	0.0
Other items not allocated to segments: | Chile Antitrust Matter
Segment Reporting Information [Line Items]
Loss contingencies			(0.5)	(1.4)	(9.5)
Other items not allocated to segments: | Ship Loss Matter
Segment Reporting Information [Line Items]
Loss contingencies			0.0	(4.9)	0.0
Other items not allocated to segments: | Uncollectible Receivables
Segment Reporting Information [Line Items]
Change in allowance estimate			0.0	(15.6)	0.0
Argentina
Segment Reporting Information [Line Items]
Revenues			207.1	203.9	177.5
Argentina | Other items not allocated to segments:
Segment Reporting Information [Line Items]
Argentina highly inflationary impact			(86.8)	(41.7)	(11.9)
North America | Reportable Segments:
Segment Reporting Information [Line Items]
Revenues			1,601.1	1,584.1	1,407.1
Operating profit			185.2	159.1	148.4
Latin America | Reportable Segments:
Segment Reporting Information [Line Items]
Revenues			1,332.3	1,210.6	1,126.0
Operating profit			280.3	277.7	257.3
Europe | Reportable Segments:
Segment Reporting Information [Line Items]
Revenues			1,136.8	931.4	917.3
Operating profit			125.0	98.4	89.8
Rest of World | Reportable Segments:
Segment Reporting Information [Line Items]
Revenues			804.4	809.4	749.8
Operating profit			164.1	163.9	131.5
Internal Loss AR Rebuild
Segment Reporting Information [Line Items]
Internal loss					(3.7)
Internal Loss AR Rebuild | Other items not allocated to segments:
Segment Reporting Information [Line Items]
Internal loss			$ 0.0	$ 0.0	$ 21.1