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Pension and Other Postretirement Benefit Plans | 9 Months Ended
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Sep. 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) |
| Third Quarter |  |  | Nine Months |
| 2020 |  |  | 2019 |  |  | 2020 |  |  | 2019 |
| US |  |  | Int’l |  |  | US |  |  | Int’l |  |  | US |  |  | Int’l |  |  | US |  |  | Int’l |
Service cost | $ | 10 |  |  | $ | 31 |  |  | $ | 14 |  |  | $ | 32 |  |  | $ | 41 |  |  | $ | 105 |  |  | $ | 41 |  |  | $ | 96 |
Interest cost |  | 36 |  |  |  | 76 |  |  |  | 45 |  |  |  | 82 |  |  |  | 111 |  |  |  | 226 |  |  |  | 136 |  |  |  | 248 |
Expected return on plan assets |  | (58 | ) |  |  | (148 | ) |  |  | (58 | ) |  |  | (148 | ) |  |  | (175 | ) |  |  | (443 | ) |  |  | (173 | ) |  |  | (446 | )
Amortization of prior service cost |  | 2 |  |  |  | - |  |  |  | 3 |  |  |  | 2 |  |  |  | 6 |  |  |  | - |  |  |  | 7 |  |  |  | 6 |
Amortization of net loss |  | 9 |  |  |  | 39 |  |  |  | 7 |  |  |  | 16 |  |  |  | 31 |  |  |  | 119 |  |  |  | 23 |  |  |  | 47 |
| $ | (1 | ) |  | $ | (2 | ) |  | $ | 11 |  |  | $ | (16 | ) |  | $ | 14 |  |  | $ | 7 |  |  | $ | 34 |  |  | $ | (49 | )
The net periodic benefit credit for the Schlumberger US postretirement medical plan included the following components:
(Stated in millions) |
| Third Quarter |  |  | Nine Months |
| 2020 |  |  | 2019 |  |  | 2020 |  |  | 2019 |
Service cost | $ | 5 |  |  | $ | 8 |  |  | $ | 23 |  |  | $ | 23 |
Interest cost |  | 7 |  |  |  | 12 |  |  |  | 27 |  |  |  | 36 |
Expected return on plan assets |  | (19 | ) |  |  | (16 | ) |  |  | (52 | ) |  |  | (49 | )
Amortization of prior service credit |  | (4 | ) |  |  | (7 | ) |  |  | (19 | ) |  |  | (21 | )
Curtailment gain |  | - |  |  |  | - |  |  |  | (69 | ) |  |  | - |
| $ | (11 | ) |  | $ | (3 | ) |  | $ | (90 | ) |  | $ | (11 | )
Due to the actions taken by Schlumberger to reduce its global workforce during 2020, Schlumberger experienced a significant reduction in the expected aggregate years of future service of its employees in its US postretirement medical plan. Accordingly, Schlumberger recorded a curtailment gain of $69 million during the second quarter of 2020 relating to this plan. The curtailment gain includes recognition of the decrease in the benefit obligation as well as a portion of the previously unrecognized prior service credit, reflecting the reduction in expected years of future service. As a result of the curtailment, Schlumberger performed a remeasurement of the plan, which had an immaterial impact. This gain was classified in Impairments & other in the Consolidated Statement of Loss. See Note 2 – Charges and Credits.

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