| Cover Page - USD ($) $ in Millions | 12 Months Ended | ||
| Dec. 31, 2019 | Feb. 07, 2020 | Jun. 30, 2019 | |
| Cover [Abstract] | |||
| Title of 12(b) Security | Ordinary Shares. $0.01 par value per share | ||
| Entity Incorporation, State or Country Code | Y9 | ||
| Document Annual Report | true | ||
| Entity Tax Identification Number | 98-1367514 | ||
| Trading Symbol | DLPH | ||
| Security Exchange Name | NYSE | ||
| City Area Code | 011- | ||
| Local Phone Number | 44-020-305-74300 | ||
| Entity Registrant Name | DELPHI TECHNOLOGIES PLC | ||
| Entity Central Index Key | 0001707092 | ||
| Current Fiscal Year End Date | --12-31 | ||
| Entity Filer Category | Large Accelerated Filer | ||
| Document Type | 10-K/A | ||
| Document Period End Date | Dec. 31, 2019 | ||
| Entity File Number | 001-38110 | ||
| Entity Address, Address Line One | One Angel Court | ||
| Entity Address, City or Town | London | ||
| Entity Address, Postal Zip Code | EC2R 7HJ | ||
| Entity Address, Country | GB | ||
| Document Fiscal Year Focus | 2019 | ||
| Document Fiscal Period Focus | FY | ||
| Amendment Flag | true | ||
| Amendment Description | This Amendment No. 1 on Form 10-K/A (“Amendment No. 1”) amends our Annual Report on Form 10-K for the fiscal year ended December 31, 2019 (“Original Filing”), filed with the U.S. Securities and Exchange Commission (“SEC”) on February 13, 2020 (“Original Filing Date”). The sole purpose of this Amendment No. 1 is to include the information required by Items 10 through 14 of Part III of Form 10-K. This information was previously omitted from the Original Filing in reliance on General Instruction G(3) to Form 10-K, which permits the information in the above referenced items to be incorporated in the Form 10-K by reference from our definitive proxy statement if such statement is filed not later than 120 days after our fiscal year-end. We are filing this Amendment No. 1 to include Part III information in our Original Filing because we will not file a definitive proxy statement containing such information within 120 days after the end of the fiscal year covered by the Original Filing. The reference on the cover of the Original Filing to the incorporation by reference to portions of our definitive proxy statement into Part III of the Original Filing is hereby deleted. In accordance with Rule 12b-15 under the Securities Exchange Act of 1934, as amended (“Exchange Act”), Part III, Items 10 through 14 and Part IV, Item 15 of the Original Filing are hereby amended and restated in their entirety. This Amendment No. 1 does not amend, modify, or otherwise update any other information in the Original Filing. Accordingly, this Amendment No. 1 should be read in conjunction with the Original Filing. In addition, this Amendment No. 1 does not reflect events that may have occurred subsequent to the Original Filing Date. Pursuant to Rule 12b-15 under the Exchange Act, this Amendment No. 1 also contains new certifications pursuant to Section 302 of the Sarbanes-Oxley Act of 2002, which are attached hereto. Because no financial statements are included in this Amendment No. 1 and this Amendment No. 1 does not contain or amend any disclosure with respect to Items 307 and 308 of Regulation S-K, paragraphs 3, 4, and 5 of the certifications have been omitted. Unless otherwise indicated, references to “we”, “us”, “our”, “Company”, or “Delphi” mean Delphi Technologies PLC and its subsidiaries, and references to “fiscal” mean the Company’s fiscal year ended December 31. | ||
| Entity Emerging Growth Company | false | ||
| Entity Small Business | false | ||
| Entity Shell Company | false | ||
| Entity Common Stock, Shares Outstanding | 86,071,640 | ||
| Document Transition Report | false | ||
| Entity Well-known Seasoned Issuer | Yes | ||
| Entity Voluntary Filers | No | ||
| Entity Current Reporting Status | Yes | ||
| Entity Interactive Data Current | Yes | ||
| Entity Public Float | $ 1,738,378,780 |
