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Pension and Other Postretirement Benefit Plans | 3 Months Ended
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Mar. 31, 2021
Compensation And Retirement Disclosure [Abstract] |
Pension and Other Postretirement Benefit Plans | 12. Pension and Other Postretirement Benefit Plans Net pension (credit) cost for the Schlumberger pension plans included the following components:
(Stated in millions) |
| First Quarter |
| 2021 |  |  | 2020 |
| US |  |  | Int’l |  |  | US |  |  | Int’l |
Service cost | $ | 11 |  |  | $ | 33 |  |  | $ | 15 |  |  | $ | 37 |
Interest cost |  | 32 |  |  |  | 69 |  |  |  | 37 |  |  |  | 75 |
Expected return on plan assets |  | (63 | ) |  |  | (158 | ) |  |  | (58 | ) |  |  | (147 | )
Amortization of prior service cost |  | - |  |  |  | - |  |  |  | 2 |  |  |  | - |
Amortization of net loss |  | 11 |  |  |  | 52 |  |  |  | 11 |  |  |  | 40 |
| $ | (9 | ) |  | $ | (4 | ) |  | $ | 7 |  |  | $ | 5 |
The net periodic benefit credit for the Schlumberger US postretirement medical plan included the following components:
(Stated in millions) |
| First Quarter |
| 2021 |  |  | 2020 |
Service cost | $ | 7 |  |  | $ | 9 |
Interest cost |  | 8 |  |  |  | 10 |
Expected return on plan assets |  | (14 | ) |  |  | (17 | )
Amortization of prior service credit |  | (5 | ) |  |  | (7 | )
| $ | (4 | ) |  | $ | (5 | )

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