v3.26.1
Changes in Accumulated Other Comprehensive Income AOCI Reclassifications (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]        
Cost of sales $ 2,499 $ 2,468 $ 4,861 $ 4,784
Income Tax Expense (Benefit) (52) (16) (94) (342)
Net income 247 397 438 386
Net income attributable to noncontrolling interest   (5) (3) (6)
Net income attributable to Aptiv 248 393 437 382
Amount Reclassified from Accumulated Other Comprehensive Income        
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]        
Net income attributable to Aptiv 14 7 23 10
Amount Reclassified from Accumulated Other Comprehensive Income | Pension and postretirement plans:        
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]        
Income before income taxes (1) (1) (1) (1)
Income Tax Expense (Benefit) 0 0 0 0
Net income (1) (1) (1) (1)
Net income attributable to noncontrolling interest 0 0 0 0
Net income attributable to Aptiv (1) (1) (1) (1)
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, before Tax (1) (1) (1) (1)
Amount Reclassified from Accumulated Other Comprehensive Income | Accumulated Foreign Currency Adjustment Including Portion Attributable to Noncontrolling Interest        
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]        
Income before income taxes 0 6 0 6
Income Tax Expense (Benefit) 0 0 0 0
Net income 0 6 0 6
Net income attributable to noncontrolling interest 0 0 0 0
Net income attributable to Aptiv 0 6 0 6
Other income (expense), net 0 6 0 6
Amount Reclassified from Accumulated Other Comprehensive Income | Gains (losses) on derivatives:        
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]        
Income before income taxes 18 2 33 6
Income Tax Expense (Benefit) (3) 0 (9) (1)
Net income 15 2 24 5
Net income attributable to noncontrolling interest 0 0 0 0
Net income attributable to Aptiv 15 2 24 5
Amount Reclassified from Accumulated Other Comprehensive Income | Gains (losses) on derivatives: | Commodity derivatives        
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]        
Cost of sales 11 2 20 5
Amount Reclassified from Accumulated Other Comprehensive Income | Gains (losses) on derivatives: | Foreign currency derivatives        
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]        
Cost of sales $ 7 $ 0 $ 13 $ 1