Restructuring and Related Implementation Charges (Details 1) (Two Thousand Twelve Restructuring Program [Member], USD $) In Millions, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Restructuring Cost and Reserve [Line Items]
Pretax charges related to the 2012 Restructuring Program									$ 286	$ 371	$ 89
Aftertax charges related to the 2012 Restructuring Program	41	41	53	73	125	22	79	52	208	278	70
Cost of Sales [Member]
Restructuring Cost and Reserve [Line Items]
Pretax charges related to the 2012 Restructuring Program	6	7	6	10	6	8	10	8	29	32	2
Selling, General and Administrative Expenses [Member]
Restructuring Cost and Reserve [Line Items]
Pretax charges related to the 2012 Restructuring Program									62	137	6
Other (Income) Expense, Net [Member]
Restructuring Cost and Reserve [Line Items]
Pretax charges related to the 2012 Restructuring Program									$ 195	$ 202	$ 81