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Summary of significant accounting policies - Summary of Changes in Accumulated Balances of Other Comprehensive Loss (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2023
Mar. 31, 2023
Jun. 30, 2022
Mar. 31, 2022
Jun. 30, 2023
Jun. 30, 2022
AOCI Attributable to Parent, Net of Tax [Roll Forward]            
Beginning Balance $ 2,040 $ 1,827 $ 1,589 $ 1,531 $ 1,827 $ 1,531
Other comprehensive income (loss) before reclassifications         168 19
Amount of (gain) loss reclassified from accumulated other comprehensive income (loss)         1 7
Net change in accumulated other comprehensive income, net of income tax 96 73 (103) 129 169 26
Ending Balance 2,252 2,040 1,580 1,589 2,252 1,580
Accumulated other comprehensive loss            
AOCI Attributable to Parent, Net of Tax [Roll Forward]            
Beginning Balance (391) (464) (386) (515) (464) (515)
Net change in accumulated other comprehensive income, net of income tax 96 73 (103) 129    
Ending Balance (295) (391) (489) (386) (295) (489)
Unrealized (Loss) Gains on hedging activities, net            
AOCI Attributable to Parent, Net of Tax [Roll Forward]            
Beginning Balance   (5)   8 (5) 8
Other comprehensive income (loss) before reclassifications         (10) (24)
Amount of (gain) loss reclassified from accumulated other comprehensive income (loss)         2 9
Net change in accumulated other comprehensive income, net of income tax         (8) (15)
Ending Balance (13)   (7)   (13) (7)
Foreign Currency Translation            
AOCI Attributable to Parent, Net of Tax [Roll Forward]            
Beginning Balance   (462)   (523) (462) (523)
Other comprehensive income (loss) before reclassifications         175 38
Amount of (gain) loss reclassified from accumulated other comprehensive income (loss)         0 0
Net change in accumulated other comprehensive income, net of income tax         175 38
Ending Balance (287)   (485)   (287) (485)
Estimated tax benefit (expense)            
AOCI Attributable to Parent, Net of Tax [Roll Forward]            
Beginning Balance   $ 3   $ 0 3 0
Other comprehensive income (loss) before reclassifications         3 5
Amount of (gain) loss reclassified from accumulated other comprehensive income (loss)         (1) (2)
Net change in accumulated other comprehensive income, net of income tax         2 3
Ending Balance $ 5   $ 3   $ 5 $ 3