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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, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Segment Reporting Information [Line Items]
Total segment profit	$ 218	$ (11)	$ 172	$ 190
NuScale | Disposal Group, Not Discontinued Operations | Fluor Corporation
Segment Reporting Information [Line Items]
Entity's interest in partnership or joint venture (percent)	55.00%		55.00%
Reportable Segments | Continuing Operations
Segment Reporting Information [Line Items]
Total segment profit	$ 276	31	$ 452	253
Reportable Segments | Other | Continuing Operations
Segment Reporting Information [Line Items]
Total segment profit	(5)	(7)	(108)	(18)
Reportable Segments | Other | NuScale | Continuing Operations
Segment Reporting Information [Line Items]
Total segment profit	(19)	(15)	(71)	(44)
Reportable Segments | Other | Stork | Continuing Operations
Segment Reporting Information [Line Items]
Total segment profit	14	4	25	16
Reportable Segments | Other | AMECO | Continuing Operations
Segment Reporting Information [Line Items]
Total segment profit	$ 0	$ 4	$ (62)	$ 10

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