Financial Instruments - Financial Assets and Liabilities Measured at Fair Value on a Recurring Basis - Footnotes (Detail) - USD ($) $ in Millions |
9 Months Ended | ||
|---|---|---|---|
Sep. 27, 2020 |
Sep. 29, 2019 |
Dec. 31, 2019 |
|
| Footnotes to selected financial assets and liabilities: | |||
| Proceeds from issuance of long-term debt | $ 16,700 | $ 4,942 | |
| Recurring [Member] | |||
| Footnotes to selected financial assets and liabilities: | |||
| Long-term equity securities held in trust | 181 | $ 176 | |
| Subsidiaries [Member] | Upjohn Inc [Member] | |||
| Footnotes to selected financial assets and liabilities: | |||
| Proceeds from issuance of long-term debt | $ 11,400 | ||