v3.24.2
Supplemental Financial Information - Accumulated other comprehensive income (loss) (Details)
$ in Millions
 6 Months Ended
Jun. 30, 2024
USD ($)
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]  
Beginning balance $ 8,960
Other comprehensive income (loss) before reclassifications (72)
Amounts reclassified out of accumulated other comprehensive income (loss) 9
Other comprehensive income (loss) 3
Other comprehensive income (loss) (60)
Ending balance 9,345
Currency  translation differences  
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]  
Beginning balance 177
Other comprehensive income (loss) before reclassifications (54)
Amounts reclassified out of accumulated other comprehensive income (loss) 0
Other comprehensive income (loss) 0
Other comprehensive income (loss) (54)
Ending balance 123
Change in fair value cash flow hedges  
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]  
Beginning balance 1
Other comprehensive income (loss) before reclassifications (20)
Amounts reclassified out of accumulated other comprehensive income (loss) 9
Other comprehensive income (loss) 3
Other comprehensive income (loss) (8)
Ending balance (7)
Net actuarial gain/(losses)  
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]  
Beginning balance (88)
Other comprehensive income (loss) before reclassifications 2
Amounts reclassified out of accumulated other comprehensive income (loss) 0
Other comprehensive income (loss) 0
Other comprehensive income (loss) 2
Ending balance (86)
Accumulated  Other Comprehensive Income (loss)  
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]  
Beginning balance 90
Ending balance $ 30