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, 2024	Dec. 31, 2023	Dec. 31, 2022
Postretirement medical plan
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 19	$ 16	$ 23
Interest cost	41	42	33
Expected return on plan assets	(42)	(41)	(38)
Amortization of prior service cost	(23)	(23)	(23)
Amortization of net gain	(13)	(12)	(10)
Total pension cost	(18)	(18)	(15)
US
Defined Benefit Plan Disclosure [Line Items]
Service cost	23	23	37
Interest cost	$ 173	$ 178	$ 137
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	$ (200)	$ (198)	$ (202)
Defined Benefit Plan, Net Periodic Benefit (Cost) Credit, Expected Return (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Actuarial loss arising during the period	Actuarial loss arising during the period	Actuarial loss arising during the period
Amortization of net gain			$ 5
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	$ (4)	$ 3	$ (23)
International
Defined Benefit Plan Disclosure [Line Items]
Service cost	56	54	101
Interest cost	$ 413	$ 407	$ 298
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	$ (553)	$ (607)	$ (530)
Amortization of net gain	$ 10		$ 80
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	$ (74)	$ (146)	$ (51)