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Discontinued Operations (Components of Net Income (Loss) Attributable to KBR From Discontinued Operations) (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jul. 04, 2025 | Jun. 28, 2024 | Jul. 04, 2025 | Jun. 28, 2024
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |
Net income (loss) from discontinued operations, net of tax | $ (48) | $ 1 | $ (54) | $ 1
Less: Net income (loss) attributable to noncontrolling interests included in discontinued operations | (16) | 1 | (18) | 1
Net loss attributable to KBR from discontinued operations | (32) | 0 | (36) | 0
Abandonment | HomeSafe |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |
Revenues | 27 | 8 | 64 | 8
Cost of revenues | (40) | (7) | (79) | (7)
Gross profit (loss) | (13) | 1 | (15) | 1
Selling, general and administrative expenses | (22) | 0 | (27) | 0
Loss on disposal | (22) | 0 | (22) | 0
Operating income (loss) | (57) | 1 | (64) | 1
Income (loss) from discontinued operations before income taxes | (57) | 1 | (64) | 1
Provision for income taxes | 9 | 0 | 10 | 0
Net income (loss) from discontinued operations, net of tax | (48) | 1 | (54) | 1
Less: Net income (loss) attributable to noncontrolling interests included in discontinued operations | (16) | 1 | (18) | 1
Net loss attributable to KBR from discontinued operations | (32) | 0 | (36) | 0
Asset impairments related to property, plant and equipment | 64 | 64 | 64 | 64
Asset write-offs | 30 | 30 | 30 | 30
Elimination of other liabilities | $ 72 | $ 72 | $ 72 | $ 72

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