Basis of presentation (Details) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022 USD ($) $ / $	Mar. 31, 2022 USD ($)	Sep. 30, 2023 USD ($) segment $ / $	Sep. 30, 2022 USD ($) $ / $	Dec. 31, 2022 USD ($) $ / $	Dec. 31, 2021 $ / $
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Number of operating segments | segment			4
Change in allowance estimate			$ 12.1
Net monetary assets			2,462.4		$ 2,597.4
Cash and cash equivalents			933.5		972.0
Goodwill			1,448.1		1,450.9
Restricted cash			$ 387.0		$ 438.5
Uncollectible Receivables
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Change in allowance estimate	$ 0.7	$ 16.7
Argentina, Pesos | Argentina
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Percent of consolidated revenue			4.00%	5.00%
Rate decrease percent	30.00%		48.00%	30.00%	42.00%
Official exchange rate | $ / $	147.1		344.8	147.1	178.6	103.1
Currency remeasurement loss			$ 23.9	$ 24.4
Net monetary assets			74.1		$ 66.2
Cash and cash equivalents			71.4		57.7
Nonmonetary assets			174.9		168.2
Goodwill			99.8		99.8
Equity securities			2.2		1.9
Debt securities			38.6		27.4
Revolving Credit Facility
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Restricted cash			$ 40.6		$ 40.7