Operating Information by Segment and Geographic Area - Other Segment Profit (Loss) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Segment Reporting Information [Line Items]
Total segment profit (loss)	$ 52	$ (141)
NuScale | Disposal Group, Not Discontinued Operations | Fluor Corporation
Segment Reporting Information [Line Items]
Entity's interest in partnership or joint venture (percent)	55.00%
Reportable Segments | Continuing Operations
Segment Reporting Information [Line Items]
Total segment profit (loss)	$ 118	(15)
Reportable Segments | Other | Continuing Operations
Segment Reporting Information [Line Items]
Total segment profit (loss)	(22)	(90)
Reportable Segments | Other | NuScale | Continuing Operations
Segment Reporting Information [Line Items]
Total segment profit (loss)	(33)	(29)
Reportable Segments | Other | Stork | Continuing Operations
Segment Reporting Information [Line Items]
Total segment profit (loss)	11	1
Reportable Segments | Other | AMECO | Continuing Operations
Segment Reporting Information [Line Items]
Total segment profit (loss)	$ 0	$ (62)