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Operating Information by Segment and Geographic Area - Other Segment Profit (Loss) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Segment Reporting Information [Line Items]
Total segment profit	$ 49	$ 218	$ 277	$ 172
NuScale | Disposal Group, Not Discontinued Operations | Fluor Corporation
Segment Reporting Information [Line Items]
Entity's interest in partnership or joint venture (percent)	50.00%		50.00%
Reportable Segments | Continuing Operations
Segment Reporting Information [Line Items]
Total segment profit	$ 117	276	$ 429	452
Reportable Segments | Other | Continuing Operations
Segment Reporting Information [Line Items]
Total segment profit	(46)	(5)	(95)	(108)
Reportable Segments | Other | NuScale | Continuing Operations
Segment Reporting Information [Line Items]
Total segment profit	(40)	(19)	(100)	(71)
Reportable Segments | Other | Stork | Continuing Operations
Segment Reporting Information [Line Items]
Total segment profit	(6)	14	6	25
Reportable Segments | Other | AMECO | Continuing Operations
Segment Reporting Information [Line Items]
Total segment profit	$ 0	$ 0	$ (1)	$ (62)

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