Supplemental Guarantor And Non-Guarantor Condensed Consolidating Financial Statements Statement of Cash Flows (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Net cash provided by (used in) operating activities from continuing operations	$ 1,106	$ 1,494	$ 1,140
Net cash provided by (used in) operating activities from discontinued operations	362	447	563
Net cash provided by operating activities	1,468	1,941	1,703
Capital expenditures	(698)	(657)	(503)
Proceeds from sale of property / investments	7	19	7
Net proceeds from divestiture of discontinued operations	0	48	713
Proceeds from business divestitures, net of payments of $14 in 2015	0	(197)	(11)
Cost of business acquisitions, net of cash acquired	(324)	(15)	(1,654)
Cost of technology investments	(50)	(3)	(3)
Settlement of derivatives	(28)	(1)	0
Loans to affiliates	0	0	0
Repayments of loans from affiliates	0	0	0
Investments in subsidiaries		0	0
Net cash used in investing activities from continuing operations	(1,093)	(412)	(1,429)
Net cash used in investing activities from discontinued operations	(159)	(166)	(270)
Net cash used in investing activities	(1,252)	(578)	(1,699)
Net (repayments) proceeds under other short-term debt agreements	(17)	(34)	(214)
Repayment of senior notes	0	(862)	(546)
Proceeds from issuance of senior notes, net of issuance costs	796	852	2,043
Contingent consideration and deferred acquisition purchase price payments	(24)	(4)	0
Dividend payments of consolidated affiliates to minority shareholders	(38)	(42)	(63)
Proceeds from borrowings from affiliates	0	0	0
Payments on borrowings from affiliates	0	0	0
Capital distributions to affiliates			0
Investment from parent		0	0
Repurchase of ordinary shares	(383)	(634)	(1,159)
Distribution of cash dividends	(310)	(317)	(286)
Dividend received from spin-off of Delphi Technologies	1,148	0	0
Cash transferred from Delphi Technologies related to spin-off	180	0	0
Cash transferred to Delphi Technologies	(863)
Taxes withheld and paid on employees' restricted share awards	(33)	(40)	(59)
Net cash used in financing activities	456	(1,081)	(284)
Effect of exchange rate fluctuations on cash and cash equivalents	86	(23)	(45)
Increase (decrease) in cash and cash equivalents	758	259	(325)
Cash and cash equivalents at beginning of the year	838	579	904
Cash and cash equivalents at end of the year	1,596	838	579
Cash and cash equivalents of discontinued operations	0	101	152
Cash and cash equivalents of continuing operations	1,596	737	427
Reportable Legal Entities | Parent
Net cash provided by (used in) operating activities from continuing operations	(93)	(141)	(53)
Net cash provided by (used in) operating activities from discontinued operations	0	0	0
Net cash provided by operating activities	(93)	(141)	(53)
Capital expenditures	0	0	0
Proceeds from sale of property / investments	0	0	0
Net proceeds from divestiture of discontinued operations		0	0
Proceeds from business divestitures, net of payments of $14 in 2015		0	0
Cost of business acquisitions, net of cash acquired	0	0	(1,606)
Cost of technology investments	0	0	0
Settlement of derivatives	0	0
Loans to affiliates	0	0	0
Repayments of loans from affiliates	0	0	0
Investments in subsidiaries		(854)	(753)
Net cash used in investing activities from continuing operations	0	(854)	(2,359)
Net cash used in investing activities from discontinued operations	0	0	0
Net cash used in investing activities	0	(854)	(2,359)
Net (repayments) proceeds under other short-term debt agreements	0	0	0
Repayment of senior notes		0	0
Proceeds from issuance of senior notes, net of issuance costs	0	852	2,043
Contingent consideration and deferred acquisition purchase price payments	0	0
Dividend payments of consolidated affiliates to minority shareholders	0	0	0
Proceeds from borrowings from affiliates	802	1,095	3,277
Payments on borrowings from affiliates	(1,345)	(353)	(1,468)
Capital distributions to affiliates			0
Investment from parent		350	0
Repurchase of ordinary shares	(383)	(634)	(1,159)
Distribution of cash dividends	(310)	(317)	(286)
Dividend received from spin-off of Delphi Technologies	1,148
Cash transferred from Delphi Technologies related to spin-off	180
Cash transferred to Delphi Technologies	0
Taxes withheld and paid on employees' restricted share awards	0	0	0
Net cash used in financing activities	92	993	2,407
Effect of exchange rate fluctuations on cash and cash equivalents	0	0	0
Increase (decrease) in cash and cash equivalents	(1)	(2)	(5)
Cash and cash equivalents at beginning of the year	2	4	9
Cash and cash equivalents at end of the year	1	2	4
Cash and cash equivalents of discontinued operations	0	0	0
Cash and cash equivalents of continuing operations	1	2	4
Reportable Legal Entities | Subsidiary Guarantors
Net cash provided by (used in) operating activities from continuing operations	(184)	125	171
Net cash provided by (used in) operating activities from discontinued operations	0	0	0
Net cash provided by operating activities	(184)	125	171
Capital expenditures	0	0	0
Proceeds from sale of property / investments	0	0	0
Net proceeds from divestiture of discontinued operations		0	0
Proceeds from business divestitures, net of payments of $14 in 2015		0	0
Cost of business acquisitions, net of cash acquired	0	0	0
Cost of technology investments	0	0	0
Settlement of derivatives	0	0
Loans to affiliates	(126)	(979)	(925)
Repayments of loans from affiliates	0	0	0
Investments in subsidiaries		0	0
Net cash used in investing activities from continuing operations	(126)	(979)	(925)
Net cash used in investing activities from discontinued operations	0	0	0
Net cash used in investing activities	(126)	(979)	(925)
Net (repayments) proceeds under other short-term debt agreements	0	0	0
Repayment of senior notes		0	0
Proceeds from issuance of senior notes, net of issuance costs	0	0	0
Contingent consideration and deferred acquisition purchase price payments	0	0
Dividend payments of consolidated affiliates to minority shareholders	0	0	0
Proceeds from borrowings from affiliates	310	0	0
Payments on borrowings from affiliates	0	0	0
Capital distributions to affiliates			0
Investment from parent		854	753
Repurchase of ordinary shares	0	0	0
Distribution of cash dividends	0	0	0
Dividend received from spin-off of Delphi Technologies	0
Cash transferred from Delphi Technologies related to spin-off	0
Cash transferred to Delphi Technologies	0
Taxes withheld and paid on employees' restricted share awards	0	0	0
Net cash used in financing activities	310	854	753
Effect of exchange rate fluctuations on cash and cash equivalents	0	0	0
Increase (decrease) in cash and cash equivalents	0	0	(1)
Cash and cash equivalents at beginning of the year	0	0	1
Cash and cash equivalents at end of the year	0	0	0
Cash and cash equivalents of discontinued operations	0	0	0
Cash and cash equivalents of continuing operations	0	0	0
Reportable Legal Entities | Subsidiary Issuer/Guarantor
Net cash provided by (used in) operating activities from continuing operations	0	0	0
Net cash provided by (used in) operating activities from discontinued operations	0	0	0
Net cash provided by operating activities	0	0	0
Capital expenditures	0	0	0
Proceeds from sale of property / investments	0	0	0
Net proceeds from divestiture of discontinued operations		0	0
Proceeds from business divestitures, net of payments of $14 in 2015		0	7
Cost of business acquisitions, net of cash acquired	0	(15)	(104)
Cost of technology investments	0	(3)	0
Settlement of derivatives	0	0
Loans to affiliates	0	0	(342)
Repayments of loans from affiliates	0	0	135
Investments in subsidiaries		(350)	0
Net cash used in investing activities from continuing operations	0	(368)	(318)
Net cash used in investing activities from discontinued operations	0	0	0
Net cash used in investing activities	0	(368)	(318)
Net (repayments) proceeds under other short-term debt agreements	0	0	0
Repayment of senior notes		(862)	(546)
Proceeds from issuance of senior notes, net of issuance costs	0	0	0
Contingent consideration and deferred acquisition purchase price payments	0	0
Dividend payments of consolidated affiliates to minority shareholders	0	0	0
Proceeds from borrowings from affiliates	0	1,230	964
Payments on borrowings from affiliates	0	0	0
Capital distributions to affiliates			100
Investment from parent		0	0
Repurchase of ordinary shares	0	0	0
Distribution of cash dividends	0	0	0
Dividend received from spin-off of Delphi Technologies	0
Cash transferred from Delphi Technologies related to spin-off	0
Cash transferred to Delphi Technologies	0
Taxes withheld and paid on employees' restricted share awards	0	0	0
Net cash used in financing activities	0	368	318
Effect of exchange rate fluctuations on cash and cash equivalents	0	0	0
Increase (decrease) in cash and cash equivalents	0	0	0
Cash and cash equivalents at beginning of the year	0	0	0
Cash and cash equivalents at end of the year	0	0	0
Cash and cash equivalents of discontinued operations	0	0	0
Cash and cash equivalents of continuing operations	0	0	0
Reportable Legal Entities | Non-Guarantor Subsidiaries
Net cash provided by (used in) operating activities from continuing operations	1,383	1,510	1,122
Net cash provided by (used in) operating activities from discontinued operations	362	447	563
Net cash provided by operating activities	1,745	1,957	1,685
Capital expenditures	(698)	(657)	(503)
Proceeds from sale of property / investments	7	19	7
Net proceeds from divestiture of discontinued operations		48	713
Proceeds from business divestitures, net of payments of $14 in 2015		(197)	(18)
Cost of business acquisitions, net of cash acquired	(324)	0	56
Cost of technology investments	(50)	0	(3)
Settlement of derivatives	(28)	(1)
Loans to affiliates	(986)	(1,346)	(3,221)
Repayments of loans from affiliates	1,345	353	1,333
Investments in subsidiaries		0	0
Net cash used in investing activities from continuing operations	(734)	(1,387)	(1,600)
Net cash used in investing activities from discontinued operations	(159)	(166)	(270)
Net cash used in investing activities	(893)	(1,553)	(1,870)
Net (repayments) proceeds under other short-term debt agreements	(17)	(34)	(214)
Repayment of senior notes		0	0
Proceeds from issuance of senior notes, net of issuance costs	796	0	0
Contingent consideration and deferred acquisition purchase price payments	(24)	(4)
Dividend payments of consolidated affiliates to minority shareholders	(38)	(42)	(63)
Proceeds from borrowings from affiliates	0	0	247
Payments on borrowings from affiliates	0	0	0
Capital distributions to affiliates			0
Investment from parent		0	0
Repurchase of ordinary shares	0	0	0
Distribution of cash dividends	0	0	0
Dividend received from spin-off of Delphi Technologies	0
Cash transferred from Delphi Technologies related to spin-off	0
Cash transferred to Delphi Technologies	(863)
Taxes withheld and paid on employees' restricted share awards	(33)	(40)	(59)
Net cash used in financing activities	(179)	(120)	(89)
Effect of exchange rate fluctuations on cash and cash equivalents	86	(23)	(45)
Increase (decrease) in cash and cash equivalents	759	261	(319)
Cash and cash equivalents at beginning of the year	836	575	894
Cash and cash equivalents at end of the year	1,595	836	575
Cash and cash equivalents of discontinued operations	0	101	152
Cash and cash equivalents of continuing operations	1,595	735	423
Eliminations
Net cash provided by (used in) operating activities from continuing operations	0	0	(100)
Net cash provided by (used in) operating activities from discontinued operations	0	0	0
Net cash provided by operating activities	0	0	(100)
Capital expenditures	0	0	0
Proceeds from sale of property / investments	0	0	0
Net proceeds from divestiture of discontinued operations		0	0
Proceeds from business divestitures, net of payments of $14 in 2015		0	0
Cost of business acquisitions, net of cash acquired	0	0	0
Cost of technology investments	0	0	0
Settlement of derivatives	0	0
Loans to affiliates	1,112	2,325	4,488
Repayments of loans from affiliates	(1,345)	(353)	(1,468)
Investments in subsidiaries		1,204	753
Net cash used in investing activities from continuing operations	(233)	3,176	3,773
Net cash used in investing activities from discontinued operations	0	0	0
Net cash used in investing activities	(233)	3,176	3,773
Net (repayments) proceeds under other short-term debt agreements	0	0	0
Repayment of senior notes		0	0
Proceeds from issuance of senior notes, net of issuance costs	0	0	0
Contingent consideration and deferred acquisition purchase price payments	0	0
Dividend payments of consolidated affiliates to minority shareholders	0	0	0
Proceeds from borrowings from affiliates	(1,112)	(2,325)	(4,488)
Payments on borrowings from affiliates	1,345	353	1,468
Capital distributions to affiliates			(100)
Investment from parent		(1,204)	(753)
Repurchase of ordinary shares	0	0	0
Distribution of cash dividends	0	0	0
Dividend received from spin-off of Delphi Technologies	0
Cash transferred from Delphi Technologies related to spin-off	0
Cash transferred to Delphi Technologies	0
Taxes withheld and paid on employees' restricted share awards	0	0	0
Net cash used in financing activities	233	(3,176)	(3,673)
Effect of exchange rate fluctuations on cash and cash equivalents	0	0	0
Increase (decrease) in cash and cash equivalents	0	0	0
Cash and cash equivalents at beginning of the year	0	0	0
Cash and cash equivalents at end of the year	0	0	0
Cash and cash equivalents of discontinued operations	0	0	0
Cash and cash equivalents of continuing operations	$ 0	$ 0	$ 0