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Changes in Accumulated Other Comprehensive (Loss) Income
 6 Months Ended
Jun. 30, 2026
Equity [Abstract]  
Changes in Accumulated Other Comprehensive (Loss) Income Changes in Accumulated Other Comprehensive (Loss) Income
The following table summarizes the changes in accumulated other comprehensive (loss) income, which is reported as a component of shareholders’ equity:
Six months ended June 30,
20262025
(in US $ millions)
Balance, beginning of the period1 (10)
Other comprehensive income before reclassifications(11)15 
Gain on cash flow hedges reclassified from accumulated other comprehensive loss to earnings:
Sales and marketing— 1 
Research and development— 4 
General and administrative— 1 
Tax effect on unrealized gain (loss) on cash flow hedges3 (6)
Other comprehensive (loss) income, net of tax(8)15 
Balance, end of the period(7)5