Segment, Geographic and Other Revenue Information (Detail) - USD ($) $ in Millions |
12 Months Ended | |||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Dec. 31, 2018 |
Dec. 31, 2017 |
Dec. 31, 2016 |
||||||||||||||||||||
| Segment Reporting Information [Line Items] | ||||||||||||||||||||||
| Revenues | [1] | $ 53,647 | $ 52,546 | $ 52,824 | ||||||||||||||||||
| Income from continuing operations before provision for taxes on income | [1],[2],[3],[4] | 11,885 | 12,305 | 8,351 | ||||||||||||||||||
| Depreciation and Amortization | [5] | 6,384 | 6,269 | 5,757 | ||||||||||||||||||
| Operating Segments [Member] | ||||||||||||||||||||||
| Segment Reporting Information [Line Items] | ||||||||||||||||||||||
| Revenues | 53,647 | 52,546 | 52,824 | |||||||||||||||||||
| Income from continuing operations before provision for taxes on income | [4] | 30,970 | 30,269 | 29,231 | ||||||||||||||||||
| Depreciation and Amortization | [5] | 1,175 | 1,113 | 1,183 | ||||||||||||||||||
| Segment Reconciling Items [Member] | ||||||||||||||||||||||
| Segment Reporting Information [Line Items] | ||||||||||||||||||||||
| Revenues | [6],[7] | 0 | 0 | 0 | ||||||||||||||||||
| Income from continuing operations before provision for taxes on income | [4],[6],[7] | (2,977) | (3,137) | (3,020) | ||||||||||||||||||
| Depreciation and Amortization | [5],[6],[7] | 93 | 90 | 85 | ||||||||||||||||||
| Corporate [Member] | ||||||||||||||||||||||
| Segment Reporting Information [Line Items] | ||||||||||||||||||||||
| Revenues | [6],[8] | 0 | 0 | 0 | ||||||||||||||||||
| Income from continuing operations before provision for taxes on income | [4],[6],[8] | (5,096) | (5,452) | (5,448) | ||||||||||||||||||
| Depreciation and Amortization | [5],[6],[8] | 363 | 337 | 356 | ||||||||||||||||||
| Innovative Health Segment [Member] | Operating Segments [Member] | ||||||||||||||||||||||
| Segment Reporting Information [Line Items] | ||||||||||||||||||||||
| Revenues | [8] | 33,426 | 31,422 | 29,197 | ||||||||||||||||||
| Income from continuing operations before provision for taxes on income | [4],[8] | 20,258 | 18,809 | 16,166 | ||||||||||||||||||
| Depreciation and Amortization | [5],[8] | 629 | 534 | 583 | ||||||||||||||||||
| Essential Health Segment [Member] | Operating Segments [Member] | ||||||||||||||||||||||
| Segment Reporting Information [Line Items] | ||||||||||||||||||||||
| Revenues | [8] | 20,221 | 21,124 | 23,627 | ||||||||||||||||||
| Income from continuing operations before provision for taxes on income | [4],[8] | 10,712 | 11,460 | 13,065 | ||||||||||||||||||
| Depreciation and Amortization | [5],[8] | 547 | 579 | 600 | ||||||||||||||||||
| Purchase Accounting Adjustments [Member] | Segment Reconciling Items [Member] | ||||||||||||||||||||||
| Segment Reporting Information [Line Items] | ||||||||||||||||||||||
| Revenues | [6] | 0 | 0 | 0 | ||||||||||||||||||
| Income from continuing operations before provision for taxes on income | [4],[6] | (4,786) | (4,758) | (4,185) | ||||||||||||||||||
| Depreciation and Amortization | [5],[6] | 4,620 | 4,565 | 3,890 | ||||||||||||||||||
| Acquisition-Related Costs [Member] | Segment Reconciling Items [Member] | ||||||||||||||||||||||
| Segment Reporting Information [Line Items] | ||||||||||||||||||||||
| Revenues | [6] | 0 | 0 | 0 | ||||||||||||||||||
| Income from continuing operations before provision for taxes on income | [4],[6] | (318) | (456) | (785) | ||||||||||||||||||
| Depreciation and Amortization | [5],[6] | 12 | 39 | 7 | ||||||||||||||||||
| Certain Significant Items [Member] | Segment Reconciling Items [Member] | ||||||||||||||||||||||
| Segment Reporting Information [Line Items] | ||||||||||||||||||||||
| Revenues | [9] | 0 | 0 | 0 | ||||||||||||||||||
| Income from continuing operations before provision for taxes on income | [4],[9] | (4,305) | (2,647) | (5,888) | ||||||||||||||||||
| Depreciation and Amortization | [5],[9] | 38 | 52 | 200 | ||||||||||||||||||
| Other Unallocated [Member] | Segment Reconciling Items [Member] | ||||||||||||||||||||||
| Segment Reporting Information [Line Items] | ||||||||||||||||||||||
| Revenues | [6],[8] | 0 | 0 | 0 | ||||||||||||||||||
| Income from continuing operations before provision for taxes on income | [4],[6],[8] | (1,603) | (1,514) | (1,554) | ||||||||||||||||||
| Depreciation and Amortization | [5],[6],[8] | $ 82 | $ 72 | $ 35 | ||||||||||||||||||
| ||||||||||||||||||||||