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Postretirement and Other Employee Benefits | 3 Months Ended
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Nov. 30, 2021
Retirement Benefits [Abstract] |
Postretirement and Other Employee Benefits | Postretirement and Other Employee Benefits Net Periodic Benefit Cost The following table provides information about the net periodic benefit cost for all plans for the three months ended November 30, 2021 and 2020 (in millions):
|  |  | Three months ended
|  |  |  |  | November 30, 2021 |  | November 30, 2020
Service cost (1) |  |  |  |  | $ | 6 |  |  | $ | 6 |
Interest cost (2) |  |  |  |  | 1 |  |  | 1 |
Expected long-term return on plan assets (2) |  |  |  |  | (4) |  |  | (4) |
Recognized actuarial gain (2) |  |  |  |  | (3) |  |  | (1) |
Amortization of actuarial gain (2)(3) |  |  |  |  | (2) |  |  | (2) |
Amortization of prior service cost (2) |  |  |  |  | 1 |  |  | — |
Net periodic benefit cost |  |  |  |  | $ | (1) |  |  | $ | — |
(1)Service cost is recognized in cost of revenue in the Condensed Consolidated Statement of Operations. (2)Components are recognized in other expense in the Condensed Consolidated Statement of Operations. (3)Actuarial gains and losses are amortized using a corridor approach. The gain/loss corridor is equal to 10 percent of the greater of the projected benefit obligation and the fair value of plan assets. Gains and losses in excess of the corridor are generally amortized over the average future working lifetime of the plan participants.

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