Asset Impairment and Exit Costs (Schedule of Asset Impairment and Exit Costs) (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
Restructuring Cost and Reserve [Line Items]
Total separation programs	$ (13)	$ 0	$ 370	$ 0
Total asset impairment charges	4	0	133	0
Asset impairment and exit costs	(9)	0	503	8
Contract Termination [Member]
Restructuring Cost and Reserve [Line Items]
Total contract termination charges	0	0	0	8
European Union [Member]
Restructuring Cost and Reserve [Line Items]
Total separation programs	(16)	0	343	0
Total asset impairment charges	0	0	129	0
Asia [Member]
Restructuring Cost and Reserve [Line Items]
Total separation programs	0	0	24	0
Asia [Member] | Contract Termination [Member]
Restructuring Cost and Reserve [Line Items]
Total contract termination charges	0	0	0	8
Latin America & Canada [Member]
Restructuring Cost and Reserve [Line Items]
Total separation programs	3	0	3	0
Total asset impairment charges	$ 4	$ 0	$ 4	$ 0