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Segment Reporting Reconciliation of Adjusted OI to Net Income (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2018 | Sep. 30, 2018 | Jun. 30, 2018 | Mar. 31, 2018 | Dec. 31, 2017 | Sep. 30, 2017 | Jun. 30, 2017 | Mar. 31, 2017 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Adjusted operating income |  |  |  |  |  |  |  |  |  | $ 1,751 |  | $ 1,594 |  | $ 1,623 |
Restructuring |  |  | $ (65) |  |  |  |  |  | $ (52) | (109) |  | (129) |  | (167) |
Other acquisition and portfolio project costs |  |  |  |  |  |  |  |  |  | (78) |  | (28) |  | (57) |
Asset impairments |  |  |  |  |  |  |  |  |  | (34) |  | (9) |  | (1) |
Gain (loss) on business divestitures |  |  |  |  |  |  |  |  |  |  |  |  |  | 141 |
Deferred compensation related to nutonomy acquisition |  |  |  |  |  |  |  |  |  | (57) |  | (12) |  |  |
Operating income |  | $ 355 | 323 | $ 421 | $ 374 | $ 386 | $ 373 | $ 364 | 293 | 1,473 | [1] | 1,416 | [2] | 1,539 | [3]
Interest expense |  |  |  |  |  |  |  |  |  | (141) |  | (140) |  | (155) |
Other expense, net |  |  |  |  |  |  |  |  |  | 2 |  | (21) |  | (384) |
Income from continuing operations before income taxes and equity income |  |  |  |  |  |  |  |  |  | 1,334 |  | 1,255 |  | 1,000 |
Income tax expense |  |  |  |  |  |  |  |  |  | (250) |  | (223) |  | (167) |
Equity income, net of tax |  |  |  |  |  |  |  |  |  | 23 |  | 31 |  | 35 |
Income from continuing operations |  | 257 | 231 | 303 | 316 | 222 | 306 | 306 | 229 | 1,107 |  | 1,063 |  | 868 |
Income from discontinued operations, net of tax |  | 0 | 0 | 0 | 0 | 55 | 107 | 80 | 123 | 0 |  | 365 |  | 458 |
Net income |  | 257 | 231 | 303 | 316 | 277 | 413 | 386 | 352 | 1,107 |  | 1,428 |  | 1,326 |
Net income attributable to noncontrolling interest |  |  |  |  |  |  |  |  |  | 40 |  | 73 |  | 69 |
Net income attributable to Aptiv |  | $ 247 | $ 222 | $ 291 | $ 307 | $ 256 | $ 395 | $ 369 | $ 335 | 1,067 |  | 1,355 |  | 1,257 |
Intersegment Eliminations |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Adjusted operating income | [4] |  |  |  |  |  |  |  |  | 0 |  | 0 |  | 0 |
Restructuring |  |  |  |  |  |  |  |  |  | 0 |  | 0 |  | 0 |
Other acquisition and portfolio project costs |  |  |  |  |  |  |  |  |  | 0 |  | 0 |  | 0 |
Asset impairments |  |  |  |  |  |  |  |  |  | 0 |  | 0 |  | 0 |
Gain (loss) on business divestitures |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 |
Deferred compensation related to nutonomy acquisition |  |  |  |  |  |  |  |  |  | 0 |  | 0 |  |  |
Operating income | [4] |  |  |  |  |  |  |  |  | 0 | [1] | 0 | [2] | 0 | [3]
Equity income, net of tax | [4] |  |  |  |  |  |  |  |  | 0 |  | 0 |  | 0 |
Signal and Power Solutions |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Restructuring |  |  |  |  |  |  |  |  |  | (90) |  | (67) |  | (125) |
Signal and Power Solutions | Operating Segments |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Adjusted operating income |  |  |  |  |  |  |  |  |  | 1,424 |  | 1,302 |  | 1,272 |
Restructuring |  |  |  |  |  |  |  |  |  | (90) |  | (67) |  | (125) |
Other acquisition and portfolio project costs |  |  |  |  |  |  |  |  |  | (54) |  | (21) |  | (48) |
Asset impairments |  |  |  |  |  |  |  |  |  | (1) |  | (8) |  | 0 |
Gain (loss) on business divestitures |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 |
Deferred compensation related to nutonomy acquisition |  |  |  |  |  |  |  |  |  | 0 |  | 0 |  |  |
Operating income |  |  |  |  |  |  |  |  |  | 1,279 | [1] | 1,206 | [2] | 1,099 | [3]
Equity income, net of tax |  |  |  |  |  |  |  |  |  | 23 |  | 31 |  | 35 |
Advanced Safety and User Experience |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Restructuring |  |  |  |  |  |  |  |  |  | (19) |  | (62) |  | (42) |
Advanced Safety and User Experience | Operating Segments |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Adjusted operating income |  |  |  |  |  |  |  |  |  | 327 |  | 292 |  | 351 |
Restructuring |  |  |  |  |  |  |  |  |  | (19) |  | (62) |  | (42) |
Other acquisition and portfolio project costs |  |  |  |  |  |  |  |  |  | (24) |  | (7) |  | (9) |
Asset impairments |  |  |  |  |  |  |  |  |  | (33) |  | (1) |  | (1) |
Gain (loss) on business divestitures |  |  |  |  |  |  |  |  |  |  |  |  |  | 141 |
Deferred compensation related to nutonomy acquisition |  |  |  |  |  |  |  |  |  | (57) |  | (12) |  |  |
Operating income |  |  |  |  |  |  |  |  |  | 194 | [1] | 210 | [2] | 440 | [3]
Equity income, net of tax |  |  |  |  |  |  |  |  |  | $ 0 |  | $ 0 |  | $ 0 |
[1] | Includes charges recorded in 2018 related to costs associated with employee termination benefits and other exit costs of $90 million for Signal and Power Solutions and $19 million for Advanced Safety and User Experience.
[2] | Includes charges recorded in 2017 related to costs associated with employee termination benefits and other exit costs of $67 million for Signal and Power Solutions and $62 million for Advanced Safety and User Experience.
[3] | Includes a pre-tax gain of $141 million from the divestiture of the Advanced Safety and User Experience Mechatronics business, as well as charges recorded in 2016 related to costs associated with employee termination benefits and other exit costs of $125 million for Signal and Power Solutions and $42 million for Advanced Safety and User Experience.
[4] | Eliminations and Other includes the elimination of inter-segment transactions. Capital expenditures amounts are attributable to corporate administrative and support functions, including corporate headquarters and certain technical centers.

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