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Acquisitions and Dispositions - Historical revenues from services (Details) - USD ($)
$ in Millions
 3 Months Ended 12 Months Ended
Dec. 31, 2021
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Business Acquisition [Line Items]        
Revenues from services [1]   $ 19,827.5 $ 20,724.4 $ 18,001.0
Net earnings   $ 373.8 382.4 23.8
Ettain Group Member        
Business Acquisition [Line Items]        
Revenues from services $ 182.7   21,269.1 18,731.0
Net earnings     $ 425.4 $ 40.1
[1]

(a) The United States revenues above represent revenues from our company-owned branches and franchise fees received from our franchise operations, which were $12.8, $12.8 and $12.6 for 2022, 2021 and 2020, respectively.