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Income taxes (Tables)
6 Months Ended
Jun. 30, 2024
Income Tax Disclosure [Abstract]  
Schedule of Effective Income Tax Rate Reconciliation
The summary of the income tax expense from operations was:
Three months endedSix months ended
June 30June 30
in $ millions2024202320242023
Total tax expense430379411365
Effective income tax rate25%24%22%24%