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Earnings per share - Schedule Of Common Stock Shares Equivalent Excluded From Calculation Of Diluted Earnings Per Share (Details) - shares
3 Months Ended 9 Months Ended
Sep. 30, 2024
Sep. 30, 2023
Sep. 30, 2024
Sep. 30, 2023
Class B Common Stock [Member]        
Earnings Per Share, Basic, by Common Class, Including Two Class Method        
Antidilutive securities 82,021,389 0 82,021,389 0
Restricted Common Stock [Member]        
Earnings Per Share, Basic, by Common Class, Including Two Class Method        
Antidilutive securities 5 141 635 213