Acquisitions and Divestitures - Purchase Price Allocation (Narrative) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2019	Oct. 01, 2018
Business Acquisition [Line Items]
Borrowing capacity	$ 4,966,000,000
Federal-Mogul
Business Acquisition [Line Items]
Payment for advisory fees	11,000,000
Accrued interest	5,000,000
Line of Credit
Business Acquisition [Line Items]
Borrowing capacity		$ 4,900,000,000
Line of Credit | Federal-Mogul
Business Acquisition [Line Items]
Borrowing capacity	4,900,000,000
Term Loan | Federal-Mogul
Business Acquisition [Line Items]
Extinguishment of debt	1,455,000,000
Revolving Credit Facility | Federal-Mogul
Business Acquisition [Line Items]
Extinguishment of debt	$ 200,000,000
Revolving Credit Facility | Line of Credit
Business Acquisition [Line Items]
Borrowing capacity		$ 1,500,000,000