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Summary of Significant Accounting Policies - Schedule of Adjustments for Accounting Standards Update 2017-07 (Details) - USD ($)
$ in Millions
3 Months Ended 12 Months Ended
Dec. 29, 2019
Sep. 29, 2019
Jun. 30, 2019
Mar. 31, 2019
Dec. 30, 2018
Sep. 30, 2018
Jul. 01, 2018
Apr. 01, 2018
Dec. 29, 2019
Dec. 30, 2018
Dec. 31, 2017
Accounting Policies [Abstract]                      
Cost of products sold                 $ 27,556 $ 27,091 $ 25,439
Selling, marketing and administrative expenses                 22,178 22,540 21,520
Research and development expense                 11,355 10,775 10,594
Other (income) expense, net                 2,525 1,405 (42)
Earnings before provision for taxes on income $ 4,218 $ 1,647 $ 7,041 $ 4,422 $ 3,122 $ 4,423 $ 4,973 $ 5,481 $ 17,328 $ 17,999 $ 17,673