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Supplemental financial information - Additional Information (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2021
Jun. 30, 2021
Supplemental Financial Information [Abstract]      
Treasury shares issued related to stock compensation (in shares)   633,845 5,099,397
Cash consideration for acquisition $ 900