Supplemental Data (Summary of Accrued Expenses) (Details) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Supplemental Data
Accrued advertising and promotion	$ 443	$ 415
Accrued salaries and wages	531	463
Accrued rebates	255	241
Accrued taxes - income and other	332	231
Accrued restructuring	73	93
Accrued interest	87	81
Other	408	324
Total	2,262	1,978
Other Liabilities [Member]
Supplemental Data
Operating lease	133	130
Operating lease	$ 133	$ 130