Restructuring Charges (Restructuring Charges) (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]
Severance, asset impairment and other restructuring charges	$ 154	$ 0	$ 283	$ 0
Corporate and Research and Development [Member]
Restructuring Cost and Reserve [Line Items]
Severance, asset impairment and other restructuring charges	0		30
North America
Restructuring Cost and Reserve [Line Items]
Severance, asset impairment and other restructuring charges	15		44
MENA/ Asia Pacific
Restructuring Cost and Reserve [Line Items]
Severance, asset impairment and other restructuring charges	116		135
Europe/ SSA/ Russia
Restructuring Cost and Reserve [Line Items]
Severance, asset impairment and other restructuring charges	10		37
Latin America
Restructuring Cost and Reserve [Line Items]
Severance, asset impairment and other restructuring charges	13		37
Severance and Other Restructuring Liabilities [Member]
Restructuring Cost and Reserve [Line Items]
Severance, asset impairment and other restructuring charges			145
Cash Payments			$ (93)