| Document and Entity Information Document | Jul. 31, 2019 |
| Cover page. | |
| Document Type | 8-K |
| Document Period End Date | Jul. 31, 2019 |
| Entity Registrant Name | Aptiv PLC |
| Entity Central Index Key | 0001521332 |
| Amendment Flag | false |
| Entity Incorporation, State or Country Code | Y9 |
| Entity File Number | 001-35346 |
| Entity Tax Identification Number | 98-1029562 |
| Entity Address, Address Line One | 5 Hanover Quay |
| Entity Address, Address Line Two | Grand Canal Dock |
| Entity Address, City or Town | Dublin |
| Entity Address, Postal Zip Code | D02 VY79 |
| Entity Address, Country | IE |
| City Area Code | 353 |
| Country Region | 1 |
| Local Phone Number | 259-7013 |
| Entity Information, Former Legal or Registered Name | N/A |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Ordinary Shares. $0.01 par value per share |
| Trading Symbol | APTV |
| Security Exchange Name | NYSE |
| Entity Emerging Growth Company | false |
