Pensions, Other Post-employment Benefits and Employee Benefit Plans Net Periodic Benefit Cost (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Pension Benefits
Net Periodic Benefit Cost [Line Items]
Service cost	$ 4	$ 4	$ 12	$ 12
Interest cost	19	17	57	52
Expected return on plan assets	(19)	(18)	(56)	(53)
Amortization of actuarial losses	2	7	8	20
Amortization of prior service credit	0	1	0	1
Defined Benefit Plan, Recognized Net Gain (Loss) Due to Curtailments	0	0	0	0
Net periodic benefit cost	6	11	21	32
OPEB
Net Periodic Benefit Cost [Line Items]
Service cost	0	0	0	0
Interest cost	4	4	12	12
Expected return on plan assets	0	0	0	0
Amortization of actuarial losses	1	1	2	4
Amortization of prior service credit	(2)	(2)	(4)	(8)
Defined Benefit Plan, Recognized Net Gain (Loss) Due to Curtailments	0	(19)	0	(38)
Net periodic benefit cost	3	(16)	10	(30)
Automotive Segment [Member] | OPEB
Net Periodic Benefit Cost [Line Items]
Defined Benefit Plan, Recognized Net Gain (Loss) Due to Curtailments		(19)		(38)
Selling, General and Administrative Expenses [Member] | Automotive Segment [Member] | OPEB
Net Periodic Benefit Cost [Line Items]
Defined Benefit Plan, Recognized Net Gain (Loss) Due to Curtailments				(19)
Other income, net [Member] | Automotive Segment [Member] | OPEB
Net Periodic Benefit Cost [Line Items]
Defined Benefit Plan, Recognized Net Gain (Loss) Due to Curtailments		$ (19)		$ (19)