Supplemental Data (Summary of Accrued Expenses) (Details) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Supplemental Data
Accrued advertising and promotion	$ 394	$ 373
Accrued salaries and wages	449	426
Accrued rebates	227	220
Accrued taxes - income and other	249	259
Accrued interest	68	96
Derivatives	45	44
Other	298	357
Total	$ 1,730	$ 1,775