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GOODWILL, INTANGIBLE ASSETS, AND ACQUISITIONS - Narrative (Details) $ in Millions | 1 Months Ended | 3 Months Ended | 12 Months Ended
--- | --- | --- | ---
May 31, 2024 USD ($) reporting_unit | Dec. 29, 2024 USD ($) | Sep. 29, 2024 USD ($) | Jun. 30, 2024 USD ($) | Mar. 31, 2024 USD ($) | Dec. 31, 2023 USD ($) | Oct. 01, 2023 USD ($) | Jan. 01, 2023 USD ($) | Oct. 02, 2022 USD ($) | Dec. 29, 2024 USD ($) | Dec. 31, 2023 USD ($)
Goodwill [Line Items] |  |  |  |  |  |  |  |  |  |  |
Number of reporting units | reporting_unit | 2 |  |  |  |  |  |  |  |  |  |
Goodwill and intangible impairment |  |  |  |  |  |  |  |  |  | $ 1,466 | $ 712
Goodwill impairment measurement input | 2 |  |  |  |  |  |  |  |  |  |
Goodwill |  | $ 1,113 |  |  |  | $ 2,545 |  | $ 3,239 |  | 1,113 | 2,545
Sensitivity analysis of intangible assets impairment additional charges impact of 300 basis points |  |  |  |  |  |  |  |  |  | 20 |
Developed Technology Rights |  |  |  |  |  |  |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |  |  |  |  |  |  |
Useful life (in years) |  |  |  |  | 10 years |  |  |  |  |  |
Developed Technology Rights | Fluent Bio Sciences |  |  |  |  |  |  |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |  |  |  |  |  |  |
Useful life (in years) |  | 10 years | 7 years |  |  |  |  |  |  |  |
Finite-lived intangible assets acquired |  | $ 19 | $ 42 |  |  |  |  |  |  |  |
Customer relationships | Fluent Bio Sciences |  |  |  |  |  |  |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |  |  |  |  |  |  |
Useful life (in years) |  |  | 11 years |  |  |  |  |  |  |  |
Finite-lived intangible assets acquired |  |  | $ 2 |  |  |  |  |  |  |  |
GRAIL Inc |  |  |  |  |  |  |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |  |  |  |  |  |  |
Goodwill potential impairment loss |  |  |  |  |  |  |  | $ 0 |  |  |
Fair value in excess of carrying amount (more than) |  |  |  |  |  | $ 950 |  |  |  |  | 950
Business combination impairment test percentage |  |  |  |  |  | 23.00% |  |  |  |  |
In-process research and development (IPR&D) |  |  |  |  |  |  |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |  |  |  |  |  |  |
Goodwill fair value recorded impairment |  |  |  |  |  |  | $ 109 |  |  | $ 3 | 6
Fair value of discount rate (as a percent) |  |  |  |  |  |  | 19.00% |  |  |  |
In-process research and development (IPR&D) | Series of Individually Immaterial Business Acquisitions |  |  |  |  |  |  |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |  |  |  |  |  |  |
Indefinite-lived intangible assets acquired |  |  |  |  | $ 35 |  |  |  |  |  |
Spinoff | GRAIL Inc |  |  |  |  |  |  |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |  |  |  |  |  |  |
Amount of continuing cash flows after disposal | $ 974 |  |  |  |  |  |  |  |  |  |
Minimum | Spinoff | GRAIL Inc |  |  |  |  |  |  |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |  |  |  |  |  |  |
GRAIL net assets |  |  |  | $ 400 |  |  |  |  |  |  |
Maximum | Spinoff | GRAIL Inc |  |  |  |  |  |  |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |  |  |  |  |  |  |
GRAIL net assets |  |  |  | 770 |  |  |  |  |  |  |
Measurement Input, Expected Term |  |  |  |  |  |  |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |  |  |  |  |  |  |
Intangible assets impairment measurement input |  |  |  |  |  |  |  |  |  | 15 |
GRAIL |  |  |  |  |  |  |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |  |  |  |  |  |  |
Goodwill amount that exceeds carrying value | 580 |  |  |  |  |  |  |  |  |  |
Goodwill and intangible impairment |  |  |  | 1,466 |  |  | $ 712 |  | $ 3,914 |  |
Goodwill |  |  |  |  |  |  | $ 3,600 |  |  |  |
Fair value of discount rate (as a percent) |  |  |  |  |  |  | 24.00% |  | 22.00% |  |
GRAIL | In-process research and development (IPR&D) |  |  |  |  |  |  |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |  |  |  |  |  |  |
Goodwill fair value recorded impairment |  |  |  | $ 420 |  |  |  |  |  |  |
GRAIL | Minimum |  |  |  |  |  |  |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |  |  |  |  |  |  |
Goodwill |  |  |  |  |  | $ 3,000 |  |  |  |  | $ 3,000
Goodwill impairment increase in discounted cash flow model discount rate |  |  |  |  |  |  | 0.0050 |  |  |  |
Goodwill potential impairment loss |  |  |  |  |  |  | $ 200 |  |  |  |
GRAIL | Maximum |  |  |  |  |  |  |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |  |  |  |  |  |  |
Goodwill | $ 4,000 |  |  |  |  |  |  |  |  |  |
Goodwill impairment increase in discounted cash flow model discount rate |  |  |  |  |  |  | 0.0100 |  |  |  |
Goodwill potential impairment loss |  |  |  |  |  |  | $ 350 |  |  |  |
GRAIL | Measurement Input Cash Flow Period Member | Valuation Technique, Discounted Cash Flow |  |  |  |  |  |  |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |  |  |  |  |  |  |
Goodwill impairment measurement input | 15 |  |  |  |  |  |  |  |  |  |
GRAIL | Measurement Input, Discount Rate | Valuation Technique, Discounted Cash Flow |  |  |  |  |  |  |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |  |  |  |  |  |  |
Intangible assets impairment measurement input | 0.465 |  |  |  |  |  |  |  |  |  |

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