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Other intangible assets (Details) - USD ($)
$ in Millions
Jun. 30, 2022
Dec. 31, 2021
Finite-lived    
Gross value $ 5,774.4 $ 6,520.8
Accumulated amortization 1,586.3 1,472.8
Carrying value 4,188.1 5,048.0
Indefinite-lived 92.3 92.3
Total 4,280.4 5,140.3
Customer relationships    
Finite-lived    
Gross value 4,791.1 5,474.2
Accumulated amortization 1,207.4 1,121.6
Carrying value 3,583.7 4,352.6
Trade Names [Member]    
Finite-lived    
Gross value 353.3 505.1
Accumulated amortization 194.8 194.1
Carrying value 158.5 311.0
Other    
Finite-lived    
Gross value 630.0 541.5
Accumulated amortization 184.1 157.1
Carrying value $ 445.9 $ 384.4