Stockholders' Equity - Reclassifications out of Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Reclassifications out of Accumulated Other Comprehensive Income [Line Items]
Cost of products sold	$ 4,310	$ 4,347	$ 12,335	$ 12,643
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges
Reclassifications out of Accumulated Other Comprehensive Income [Line Items]
Cost of products sold	7		19
Accumulated Pension and Postretirement Benefits Adjustment
Reclassifications out of Accumulated Other Comprehensive Income [Line Items]
Cost of products sold / Selling, general and administrative	$ 11		$ 26