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Changes in Accumulated Other Comprehensive (Loss) Income
 3 Months Ended
Mar. 31, 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:
Three months ended March 31,
20262025
(in US $ millions)
Balance, beginning of the period1 (10)
Other comprehensive loss before reclassifications(6)(1)
Gain on cash flow hedges reclassified from accumulated other comprehensive loss to earnings:
Sales and marketing— 1 
Research and development(1)4 
General and administrative— 1 
Tax effect on unrealized (loss) on cash flow hedges2 (1)
Other comprehensive (loss) income, net of tax(5)4 
Balance, end of the period(4)(6)