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Pension and Other Benefit Plans - Net Pension Cost (Credit) for Schlumberger Pension Plans and US Postretirement Medical Plan (Detail) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Postretirement medical plan |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Service cost | $ 16 | $ 23 | $ 28
Interest cost | 42 | 33 | 32
Expected return on plan assets | (41) | (38) | (73)
Amortization of prior service cost | (23) | (23) | (23)
Amortization of net gain | (12) | (10) |
Total pension cost | (18) | (15) | (36)
US |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Service cost | 23 | 37 | 44
Interest cost | $ 178 | $ 137 | $ 127
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Interest Cost, Statement of Income or Comprehensive Income [Extensible Enumeration] | Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, before Tax | Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, before Tax | Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, before Tax
Expected return on plan assets | $ (198) | $ (202) | $ (254)
Defined Benefit Plan, Net Periodic Benefit (Cost) Credit, Expected Return (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] | Actuarial gain (loss) arising during the period | Actuarial gain (loss) arising during the period | Actuarial gain (loss) arising during the period
Amortization of net gain |  | $ 5 | $ 44
Defined Benefit Plan, Net Periodic Benefit (Cost) Credit, Amortization of Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] |  | Amortization to net income of net prior service credit | Amortization to net income of net prior service credit
Total pension cost | $ (3) | $ (23) | $ (39)
International |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Service cost | 54 | 101 | 117
Interest cost | $ 407 | $ 298 | $ 267
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Interest Cost, Statement of Income or Comprehensive Income [Extensible Enumeration] | Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, before Tax | Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, before Tax | Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, before Tax
Expected return on plan assets | $ (607) | $ (530) | $ (640)
Defined Benefit Plan, Net Periodic Benefit (Cost) Credit, Expected Return (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] | Actuarial gain (loss) arising during the period | Actuarial gain (loss) arising during the period | Actuarial gain (loss) arising during the period
Amortization of net gain |  | $ 80 | $ 227
Defined Benefit Plan, Net Periodic Benefit (Cost) Credit, Amortization of Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] | Amortization to net income of net prior service credit | Amortization to net income of net prior service credit | Amortization to net income of net prior service credit
Total pension cost | $ (146) | $ (51) | $ (29)

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