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Operating Information by Segment and Geographic Area - Narrative (Details) - USD ($)
$ / shares in Units, $ in Millions
1 Months Ended 12 Months Ended
Dec. 31, 2023
Apr. 30, 2022
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Segment Reporting Information [Line Items]          
Proceeds from sale of NuScale interest     $ 0 $ 107 $ 0
Capital contributions by NCI     10 $ 21 $ 202
Disposal Group, Not Discontinued Operations          
Segment Reporting Information [Line Items]          
Proceeds from sale of NuScale interest   $ 107      
Disposal Group, Not Discontinued Operations | Stork          
Segment Reporting Information [Line Items]          
Cash transferred $ 31   31    
Loss on sale of investments 93        
Divestiture, negative impact on earnings from foreign currency translation $ 33        
Disposal Group, Not Discontinued Operations | AMECO          
Segment Reporting Information [Line Items]          
Proceeds from divestiture of businesses     144    
Loss on sale of investments     60    
Divestiture, negative impact on earnings from foreign currency translation     35    
Cash divestiture     17    
Japan NuScale Innovation | NuScale | Disposal Group, Not Discontinued Operations          
Segment Reporting Information [Line Items]          
Entity's interest in partnership or joint venture (percent)   5.00%      
Energy Solutions | Upstream Project          
Segment Reporting Information [Line Items]          
Effect of forecast revision on estimated project cost     $ 91    
Effect of forecast revision on estimated project cost (in dollars per share)     $ 0.53    
Energy Solutions | Pemex | Consolidated revenue | Customer concentration          
Segment Reporting Information [Line Items]          
Concentration risk (as a percentage)     10.00%    
Energy Solutions | Shell | Consolidated revenue | Customer concentration          
Segment Reporting Information [Line Items]          
Concentration risk (as a percentage)     10.00%    
Energy Solutions | Single customer | Consolidated revenue | Customer concentration          
Segment Reporting Information [Line Items]          
Concentration risk (as a percentage)       14.00% 13.00%
Urban Solutions | International Bridge Project          
Segment Reporting Information [Line Items]          
Effect of forecast revision on estimated project cost       $ 54 $ 138
Effect of forecast revision on estimated project cost (in dollars per share)       $ 0.23 $ 0.72
Urban Solutions | LAX Automated People Mover project          
Segment Reporting Information [Line Items]          
Effect of forecast revision on estimated project cost     $ 59    
Effect of forecast revision on estimated project cost (in dollars per share)     $ 0.34    
Urban Solutions | Highway Project          
Segment Reporting Information [Line Items]          
Effect of forecast revision on estimated project cost       $ 86  
Effect of forecast revision on estimated project cost (in dollars per share)       $ 0.50  
Urban Solutions | Automated People Move Project          
Segment Reporting Information [Line Items]          
Effect of forecast revision on estimated project cost       $ 35  
Effect of forecast revision on estimated project cost (in dollars per share)       $ 0.20  
Government Segment | Consolidated revenue | Customer concentration          
Segment Reporting Information [Line Items]          
Concentration risk (as a percentage)     9.00% 16.00% 21.00%
Mission Solutions | Weapons Facility Project          
Segment Reporting Information [Line Items]          
Effect of forecast revision on estimated project cost     $ 30    
Effect of forecast revision on estimated project cost (in dollars per share)     $ 0.17    
Other | JGC Holdings Corporation, GS Energy And IHI Corporation | Reportable segments | NuScale          
Segment Reporting Information [Line Items]          
Capital contributions by NCI       $ 193 $ 9