v3.26.1
Segment Reporting Reconciliation of Adjusted OI to Net Income (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended 12 Months Ended
Jun. 01, 2025
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Dec. 31, 2025
Segment Reporting [Line Items]            
Adjusted operating income   $ 473 $ 410 $ 829 $ 789  
Amortization   52 52 104 103  
Restructuring   24 27 40 49  
Separation costs   (18) (1) (23) (1)  
Other acquisition and portfolio project costs   8 5 15 12  
Asset, Impairment Loss   3 1 3 6  
Loss on sale of assets     5 (1) 6  
Compensation expense related to acquisitions   (1) (4) (3) (9)  
Operating income   367 325 641 614  
Interest Expense, Nonoperating   62 92 146 185  
Other income, net   58 15 55 19  
Net gain on equity method transactions $ 13 3 46 3 46 $ 33
Income before income taxes and equity loss   366 294 553 494  
Income Tax Expense (Benefit)   (52) (16) (94) (342)  
Equity loss, net of tax   (17) (14) (34) (29)  
Net income   247 397 438 386  
Net income attributable to noncontrolling interest     5 3 6  
Net loss attributable to redeemable noncontrolling interest   (1) (1) (2) (2)  
Net income attributable to Aptiv   248 393 437 382  
Income from continuing operations   297 264 425 123  
(Loss) income from discontinued operations, net of tax (Note 21)   (50) 133 13 263  
(Loss) income from discontinued operations, net of tax (Note 21)   (50) 128 10 257  
Cost of sales   2,499 2,468 4,861 4,784  
Selling, general and administrative   332 327 660 636  
Equity Method Investments   1,255   1,255   1,288
Assets   17,996   17,996   23,413
Intelligent Systems            
Segment Reporting [Line Items]            
Restructuring   16 10 28 16  
Loss on sale of assets     (5)      
Engineered Components            
Segment Reporting [Line Items]            
Restructuring   8 17 12 33  
Operating Segments | Intelligent Systems            
Segment Reporting [Line Items]            
Adjusted operating income   156 151 270 283  
Amortization   23 22 45 44  
Restructuring   16 10 28 16  
Separation costs   (8) 0 (10) 0  
Other acquisition and portfolio project costs   5 4 8 8  
Asset, Impairment Loss   3 0 3 0  
Loss on sale of assets     5      
Compensation expense related to acquisitions   (1) (4) (3) (9)  
Operating income   100 116 173 211  
Net gain on equity method transactions   3 46 3 46  
Equity loss, net of tax   (17) (14) (34) (29)  
Net loss attributable to redeemable noncontrolling interest   0 0 0 0  
Cost of sales   1,223 1,220 2,411 2,386  
Selling, general and administrative   139 139 277 274  
Equity Method Investments   1,255   1,255   1,288
Assets   9,856   9,856   9,213
Operating Segments | Engineered Components            
Segment Reporting [Line Items]            
Adjusted operating income   317 259 559 506  
Amortization   29 30 59 59  
Restructuring   8 17 12 33  
Separation costs   (10) (1) (13) (1)  
Other acquisition and portfolio project costs   3 1 7 4  
Asset, Impairment Loss   0 1 0 6  
Loss on sale of assets     0      
Compensation expense related to acquisitions   0 0 0 0  
Operating income   267 209      
Net gain on equity method transactions   0 0 0 0  
Equity loss, net of tax   0 0 0 0  
Net loss attributable to redeemable noncontrolling interest   (1) (1) (2) (2)  
Cost of sales   1,303 1,274 2,500 2,441  
Selling, general and administrative   193 188 383 362  
Equity Method Investments   0   0   0
Assets   10,734   10,734   10,236
Intersegment Eliminations            
Segment Reporting [Line Items]            
Adjusted operating income   0 0 0 0  
Operating income   0 0 0 0  
Net gain on equity method transactions   0 0 0 0  
Equity loss, net of tax   0 0 0 0  
Net loss attributable to redeemable noncontrolling interest   0 0 0 0  
Cost of sales   (27) (26) (50) (43)  
Selling, general and administrative   0 $ 0 0 $ 0  
Equity Method Investments   0   0   0
Assets   (2,594)   (2,594)   $ 3,964
Intersegment Eliminations | Discontinued Operations            
Segment Reporting [Line Items]            
Assets   $ 5,197   $ 5,197