Investments In And Advances To Affiliates (Combined Balance Sheets And Statements Of Earnings Of The Company's Unconsolidated Affiliates) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Combined balance sheets and statements of earnings of the Company's unconsolidated affiliates:
Current assets	$ 26,695	$ 30,732
Non-current assets	22,627	21,841
Current liabilities	(23,580)	(26,592)
Non-current liabilities	(5,913)	(6,205)
Noncontrolling interests	(1,066)	(677)
Net assets	18,763	19,099
Net sales	50,596	53,143	$ 55,908
Gross profit	5,334	5,118	4,687
Net income	$ 1,455	$ 1,881	$ 1,800