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CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME (Unaudited) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Statement of Comprehensive Income [Abstract]        
Net income $ 780 $ 774 $ 2,356 $ 2,651
Currency translation adjustments        
Unrealized net change arising during the period (75) (43) (42) 183
Cash flow hedges        
Net gain (loss) on cash flow hedges 18 (28) 54 (67)
Reclassification to net income of net realized loss (gain) 3 (8) 10 (8)
Pension and other postretirement benefit plans        
Amortization to net income of net actuarial loss 14 9 39 25
Amortization to net income of net prior service credit 2 (3) 2 (9)
Pension settlement charge 187 0 187 0
Income taxes on pension and other postretirement benefit plans (1) 0 (4) (1)
Other (10) 3 (15) 14
Comprehensive income 918 704 2,587 2,788
Comprehensive income attributable to noncontrolling interests 45 35 83 101
Comprehensive income attributable to SLB $ 873 $ 669 $ 2,504 $ 2,687