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Pension and Other Postretirement Benefit Plans | 6 Months Ended
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Jun. 30, 2020
Compensation And Retirement Disclosure [Abstract] |
Pension and Other Postretirement Benefit Plans | 13. Pension and Other Postretirement Benefit Plans Net pension cost (credit) for the Schlumberger pension plans included the following components:
(Stated in millions) |
| Second Quarter |  |  | Six Months |
| 2020 |  |  | 2019 |  |  | 2020 |  |  | 2019 |
| US |  |  | Int'l |  |  | US |  |  | Int'l |  |  | US |  |  | Int'l |  |  | US |  |  | Int'l |
Service cost | $ | 16 |  |  | $ | 37 |  |  | $ | 13 |  |  | $ | 32 |  |  | $ | 31 |  |  | $ | 74 |  |  | $ | 27 |  |  | $ | 64 |
Interest cost |  | 38 |  |  |  | 75 |  |  |  | 46 |  |  |  | 83 |  |  |  | 75 |  |  |  | 150 |  |  |  | 91 |  |  |  | 166 |
Expected return on plan assets |  | (59 | ) |  |  | (147 | ) |  |  | (57 | ) |  |  | (148 | ) |  |  | (117 | ) |  |  | (294 | ) |  |  | (115 | ) |  |  | (298 | )
Amortization of prior service cost |  | 2 |  |  |  | - |  |  |  | 2 |  |  |  | 2 |  |  |  | 4 |  |  |  | - |  |  |  | 4 |  |  |  | 4 |
Amortization of net loss |  | 11 |  |  |  | 39 |  |  |  | 8 |  |  |  | 15 |  |  |  | 22 |  |  |  | 79 |  |  |  | 16 |  |  |  | 31 |
| $ | 8 |  |  | $ | 4 |  |  | $ | 12 |  |  | $ | (16 | ) |  | $ | 15 |  |  | $ | 9 |  |  | $ | 23 |  |  | $ | (33 | )
The net periodic benefit credit for the Schlumberger US postretirement medical plan included the following components:
(Stated in millions) |
| Second Quarter |  |  | Six Months |
| 2020 |  |  | 2019 |  |  | 2020 |  |  | 2019 |
Service cost | $ | 9 |  |  | $ | 7 |  |  | $ | 18 |  |  | $ | 15 |
Interest cost |  | 10 |  |  |  | 12 |  |  |  | 20 |  |  |  | 24 |
Expected return on plan assets |  | (17 | ) |  |  | (17 | ) |  |  | (34 | ) |  |  | (33 | )
Amortization of prior service credit |  | (7 | ) |  |  | (7 | ) |  |  | (14 | ) |  |  | (14 | )
Curtailment gain |  | (69 | ) |  |  | - |  |  |  | (69 | ) |  |  | - |
| $ | (74 | ) |  | $ | (5 | ) |  | $ | (79 | ) |  | $ | (8 | )

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