Restructuring Plans (Details 2) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Restructuring reserve activity
Restructuring charges	$ 138	$ 23	$ 83
Restructuring Plan 2015 and Prior Years
Restructuring reserve activity
Accrued balance beginning of the period	122	191	233
Restructuring charges	126	16	76
Payments and other adjustments	(100)	(85)	(118)
Accrued balance end of the period	$ 148	$ 122	191
Reversal of a previously recorded restructuring reserve due to the company's revaluation of a decision to exit a manufacturing facility			$ 23