ACQUISITIONS, DIVESTITURES, LICENSING AND OTHER ARRANGEMENTS - Licensing and Other Arrangements (Details) - USD ($) $ in Millions |
3 Months Ended | |
|---|---|---|
Mar. 31, 2026 |
Mar. 31, 2025 |
|
| Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] | ||
| Contingent milestone income | $ 0 | $ (40) |
| Amortization of deferred income | (12) | (12) |
| Royalty and licensing income | (195) | (259) |
| Keytruda royalties | ||
| Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] | ||
| Royalty income, nonoperating | (159) | (151) |
| Tecentriq royalties | ||
| Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] | ||
| Royalty income, nonoperating | (14) | (12) |
| Other royalties and licensing income | ||
| Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] | ||
| Royalty income, nonoperating | $ (10) | $ (43) |