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Acquisitions, Goodwill and Intangible Assets (Narrative) (Details) - USD ($) |  | 3 Months Ended | 6 Months Ended |  |
--- | --- | --- | --- | --- | ---
May 23, 2025 | Jul. 04, 2025 | Jun. 28, 2024 | Jul. 04, 2025 | Jun. 28, 2024 | Jan. 03, 2025 | Dec. 29, 2023
Goodwill [Line Items] |  |  |  |  |  |  |
Goodwill |  | $ 6,359,000,000 |  | $ 6,359,000,000 |  | $ 6,084,000,000 | $ 6,112,000,000
Impairment of intangible assets |  | 0 | $ 0 | 0 | $ 0 |  |
Amortization of intangible assets |  | 32,000,000 | $ 36,000,000 | 62,000,000 | $ 73,000,000 |  |
National Security & Digital |  |  |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |  |  |
Goodwill |  | 3,002,000,000 |  | 3,002,000,000 |  | $ 2,758,000,000 | $ 2,758,000,000
Savanna Industries, Inc. |  |  |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |  |  |
Purchase consideration | $ 291,000,000 |  |  |  |  |  |
Cash acquired | 29,000,000 |  |  |  |  |  |
Goodwill | $ 244,000,000 |  |  |  |  |  |
Savanna Industries, Inc. | National Security & Digital |  |  |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |  |  |
Revenues |  | $ 12,000,000 |  | $ 12,000,000 |  |  |

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