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, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Pension Benefits
Net Periodic Benefit Cost [Line Items]
Service cost	$ 4	$ 7	$ 12	$ 21
Interest cost	17	19	52	60
Expected return on plan assets	(18)	(15)	(53)	(47)
Amortization of actuarial losses	7	10	20	29
Amortization of prior service credit	1	0	1	0
Settlement gain			0	(1)
Curtailment gain	0	0	0	0
Net periodic benefit cost	11	21	32	62
OPEB
Net Periodic Benefit Cost [Line Items]
Service cost	0	0	0	0
Interest cost	4	3	12	11
Expected return on plan assets	0	0	0	0
Amortization of actuarial losses	1	1	4	1
Amortization of prior service credit	(2)	(3)	(8)	(11)
Settlement gain			0	0
Curtailment gain	(19)	(51)	(38)	(51)
Net periodic benefit cost	(16)	(50)	(30)	(50)
Automotive Segment [Member] | United States Welfare Benefit Plan [Member]
Net Periodic Benefit Cost [Line Items]
Curtailment gain	(19)	(51)	(38)	(51)
Prior service credit in AOCI		13
Selling, General and Administrative Expenses [Member] | Automotive Segment [Member] | United States Welfare Benefit Plan [Member]
Net Periodic Benefit Cost [Line Items]
Curtailment gain			(19)
Other Income, Net [Member] | Automotive Segment [Member] | United States Welfare Benefit Plan [Member]
Net Periodic Benefit Cost [Line Items]
Curtailment gain	$ (19)		$ (19)