Restructuring and Related Implementation Charges (Details 3) - 2012 Restructuring Program $ in Millions	Dec. 31, 2015 USD ($)
Restructuring Cost and Reserve [Line Items]
Pretax Charges Related to the Restructuring Program to Date	$ 1,000
After Tax Charges Related to the Restructuring Program to Date	739
Employee Related Costs [Member]
Restructuring Cost and Reserve [Line Items]
Pretax Charges Related to the Restructuring Program to Date	404
Incremental Depreciation [Member]
Restructuring Cost and Reserve [Line Items]
Pretax Charges Related to the Restructuring Program to Date	71
Asset Impairment [Member]
Restructuring Cost and Reserve [Line Items]
Pretax Charges Related to the Restructuring Program to Date	7
Other Restructuring
Restructuring Cost and Reserve [Line Items]
Pretax Charges Related to the Restructuring Program to Date	$ 518