Other (Income)/Deductions - Net (Detail) - USD ($) $ in Millions |
3 Months Ended | 9 Months Ended | ||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Sep. 27, 2020 |
Sep. 29, 2019 |
Sep. 27, 2020 |
Sep. 29, 2019 |
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| Other Income and Expenses [Abstract] | ||||||||||||||||||||||
| Interest income | [1] | $ (17) | $ (60) | $ (70) | $ (185) | |||||||||||||||||
| Interest expense | [1] | 416 | 409 | 1,178 | 1,158 | |||||||||||||||||
| Net interest expense | 399 | 348 | 1,108 | 973 | ||||||||||||||||||
| Royalty-related income | (214) | (155) | (525) | (475) | ||||||||||||||||||
| Net gains on asset disposals | (2) | (32) | 0 | (33) | ||||||||||||||||||
| Net (gains)/losses recognized during the period on equity securities | [2],[3] | 70 | (6) | (408) | (153) | |||||||||||||||||
| Income from collaborations, out-licensing arrangements and sales of compound/product rights | [4] | (30) | (20) | (245) | (124) | |||||||||||||||||
| Net periodic benefit costs/(credits) other than service costs | [5] | 54 | (19) | (122) | (110) | |||||||||||||||||
| Certain legal matters, net | 38 | 64 | 64 | 84 | ||||||||||||||||||
| Certain asset impairments | [6] | 900 | 28 | 900 | 188 | |||||||||||||||||
| Business and legal entity alignment costs | [7] | 0 | 87 | 0 | 343 | |||||||||||||||||
| Net losses on early retirement of debt | 0 | 0 | 0 | 138 | ||||||||||||||||||
| GSK Consumer Healthcare JV equity method (income)/loss | [8] | (103) | 0 | (196) | 0 | |||||||||||||||||
| Other, net | [9] | 38 | 24 | (69) | (294) | |||||||||||||||||
| Other (income)/deductions––net | $ 1,148 | $ 319 | $ 507 | $ 537 | ||||||||||||||||||
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