v3.25.2
Changes in Accumulated Other Comprehensive Income (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Dec. 31, 2024
AOCI Attributable to Parent, Net of Tax [Roll Forward]          
Balance $ 9,159 $ 11,322 $ 8,993 $ 11,745  
Aggregate adjustment for the period (1) 298 (185) 461 (239)  
Balance 9,872 11,675 9,872 11,675  
Accumulated other comprehensive loss (Note 13) (714) (884) (714) (884) $ (1,174)
Designated as Hedging Instrument | Net Investment Hedging          
AOCI Attributable to Parent, Net of Tax [Roll Forward]          
Gain (loss) on net investment hedge, net of tax (112) 18 (162) (42)  
Foreign currency translation adjustments          
AOCI Attributable to Parent, Net of Tax [Roll Forward]          
Balance (935) (829) (1,036) (761)  
Aggregate adjustment for the period (1) 218 (86) 319 (154)  
Balance (717) (915) (717) (915)  
Foreign currency translation adjustments | TTTech Auto AG          
AOCI Attributable to Parent, Net of Tax [Roll Forward]          
Aggregate adjustment for the period (1) (6)        
Unrealized gains (losses) on derivatives          
AOCI Attributable to Parent, Net of Tax [Roll Forward]          
Balance (59) 155 (121) 140  
Other comprehensive income (loss) before reclassifications (net of tax effect) 67 (50) 128 9  
Reclassification to income (net of tax effect) 4 (51) 5 (95)  
Balance 12 54 12 54  
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification, Tax (12) (4) (23) (4)  
Net tax effect of Reclassification Adjustment from AOCI on Derivatives (2) 2 (5) 2  
Pension and postretirement plans          
AOCI Attributable to Parent, Net of Tax [Roll Forward]          
Balance (13) (24) (13) (24)  
Other comprehensive income (loss) before reclassifications (net of tax effect) (2) 0 (2) 0  
Reclassification to income (net of tax effect) 1 1 1 1  
Balance (14) (23) (14) (23)  
Net tax effect of Other comprehensive income before reclassifications 1 0 1 0  
Net tax effect of Reclassification Adjustment from AOCI, Pension and Other Postretirement Plans 0 0 0 0  
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-Sale, Parent          
AOCI Attributable to Parent, Net of Tax [Roll Forward]          
Balance (4) 0 (4) 0  
Other comprehensive income (loss) before reclassifications (net of tax effect) 9 0 9 0  
Reclassification to income (net of tax effect) 0 0 0 0  
Balance 5 0 5 0  
OCI, Debt Securities, Available-for-Sale, Gain (Loss), before Adjustment and Tax (1) 0 (1) 0  
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Tax $ 0 $ 0 $ 0 $ 0