v3.26.1
Discontinued Operations (Schedule of Components of Net Loss Attributable to KBR From Discontinued Operations) (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jul. 03, 2026
Jul. 04, 2025
Jul. 03, 2026
Jul. 04, 2025
Disposal Group, Including Discontinued Operations [Line Items]        
Net income (loss) from discontinued operations, net of tax $ 2 $ (48) $ 0 $ (54)
Less: Net income (loss) attributable to noncontrolling interests included in discontinued operations 1 (16) 0 (18)
Net income (loss) attributable to KBR from discontinued operations 1 (32) 0 (36)
Abandonment | HomeSafe        
Disposal Group, Including Discontinued Operations [Line Items]        
Revenues 0 27 0 64
Cost of revenues 1 (40) 0 (79)
Gross profit (loss) 1 (13) 0 (15)
Selling, general and administrative expenses 1 (22) 0 (27)
Loss on disposal 0 (22) 0 (22)
Operating income (loss) 2 (57) 0 (64)
Income (loss) from discontinued operations before income taxes 2 (57) 0 (64)
Provision for income taxes 0 9 0 10
Net income (loss) from discontinued operations, net of tax 2 (48) 0 (54)
Less: Net income (loss) attributable to noncontrolling interests included in discontinued operations 1 (16) 0 (18)
Net income (loss) attributable to KBR from discontinued operations $ 1 (32) $ 0 (36)
Asset impairments related to property, plant and equipment   64   64
Asset write-offs   30   30
Elimination of other liabilities   $ 72   $ 72