Significant Accounting Policies (Details) - USD ($)			12 Months Ended
		Dec. 04, 2017	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Significant Accounting Policies [Line Items]
Components of net periodic benefit cost other than service cost			$ 32,000,000	$ 18,000,000	$ 26,000,000
Distribution Date		Dec. 04, 2017
Investment Income, Dividend			15,000,000	17,000,000	17,000,000
Cost method investments			56,000,000	6,000,000
Research and Development expense			900,000,000	800,000,000	700,000,000
Allowance for Doubtful Accounts Receivable			34,000,000	33,000,000
Provision for Doubtful Accounts			23,000,000	22,000,000	6,000,000
Reimbursable engineering costs			99,000,000	73,000,000
Property Plant & Equipment, net	[1]		2,804,000,000	2,325,000,000	2,126,000,000
Goodwill and intangible asset impairment			0	0	0
Foreign Currency Transaction Gain (Loss), Net of Tax			(13,000,000)	11,000,000	$ 13,000,000
Asset Retirement Obligation			1,000,000	1,000,000
Unamortized Revolving Credit Facility debt issuance costs			8,000,000	10,000,000
Operating Leases, Minimum Lease Commitments			447,000,000
GM
Significant Accounting Policies [Line Items]
Accounts and Other Receivables			204,000,000	291,000,000
VW
Significant Accounting Policies [Line Items]
Accounts and Other Receivables			$ 145,000,000	$ 126,000,000
Customer Concentration Risk | Total Net Sales | GM & VW
Significant Accounting Policies [Line Items]
Percentage of Total Net Sales			22.00%	25.00%	29.00%
Customer Concentration Risk | Total Net Sales | GM
Significant Accounting Policies [Line Items]
Percentage of Total Net Sales	[2]		13.00%	16.00%	19.00%
Customer Concentration Risk | Total Net Sales | VW
Significant Accounting Policies [Line Items]
Percentage of Total Net Sales			9.00%	9.00%	10.00%
Special Tools
Significant Accounting Policies [Line Items]
Property Plant & Equipment, net			$ 445,000,000	$ 373,000,000
Delphi-Owned Special Tools
Significant Accounting Policies [Line Items]
Property Plant & Equipment, net			338,000,000	303,000,000
Customer-Owned Special Tools
Significant Accounting Policies [Line Items]
Property Plant & Equipment, net			107,000,000	70,000,000
Other Long-Term Assets
Significant Accounting Policies [Line Items]
Cost method investments			$ 56,000,000	$ 6,000,000

[1] Net property data represents property, plant and equipment, net of accumulated depreciation.

[2] Net sales to GM includes net sales to GM's former European Opel business prior to its sale to PSA on August 1, 2017, after which date these sales are included in net sales to PSA.