Defined Benefit Plan, Pension Plan with Projected Benefit Obligation in Excess of Plan Assets, Plan Assets

  
  
The following table compares our pension plans whose accumulated benefit obligations exceed their assets with our pension plans whose assets exceed their accumulated benefit obligations.

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| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
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|   | AccumulatedBenefit Obligation |  |  |  | Plan Assets |
| April 30, | 2021 |  | 2022 |  |  |  |  |  | 2021 |  | 2022 |
| Plans with accumulated benefit obligation in excess of assets | $ | (155) |  |  | $ | (135) |  |  |  |  |  |  | $ | —  |  |  | $ | —  |  |
| Plans with assets in excess of accumulated benefit obligation | (748) |  |  | (623) |  |  |  |  |  |  | 836  |  |  | 741  |  |
| Total | $ | (903) |  |  | $ | (758) |  |  |  |  |  |  | $ | 836  |  |  | $ | 741  |  |

The following table compares our pension plans whose projected benefit obligations exceed their assets with our pension plans whose assets exceed their projected benefit obligations.

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| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
|   | ProjectedBenefit Obligation |  |  |  | Plan Assets |
| April 30, | 2021 |  | 2022 |  |  |  |  |  | 2021 |  | 2022 |
| Plans with projected benefit obligation in excess of assets | $ | (941) |  |  | $ | (150) |  |  |  |  |  |  | $ | 761  |  |  | $ | —  |  |
| Plans with assets in excess of projected benefit obligation | (71) |  |  | (696) |  |  |  |  |  |  | 75  |  |  | 741  |  |
| Total | $ | (1,012) |  |  | $ | (846) |  |  |  |  |  |  | $ | 836  |  |  | $ | 741  |  |

As noted above, we have no assets set aside for the postretirement medical or life insurance benefit plans.Pension cost. The following table shows the components of the pension cost recognized during each of the last three years. The amount for each year includes amortization of the prior service cost/credit and net actuarial loss/gain included in accumulated other comprehensive loss as of the beginning of the year. 

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| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
|   | Pension Benefits |
|   | 2020 |  | 2021 |  | 2022 |
| Service cost | $ | 24  |  |  | $ | 26  |  |  | $ | 26  |  |
| Interest cost | 31  |  |  | 25  |  |  | 22  |  |
|  |  |  |  |  |  |
| Expected return on assets | (46) |  |  | (46) |  |  | (45) |  |
| Amortization of: |  |  |  |  |  |
| Prior service cost (credit) | 1  |  |  | 1  |  |  | 1  |  |
| Net actuarial loss (gain) | 19  |  |  | 27  |  |  | 23  |  |
| Settlement charge | 1  |  |  | —  |  |  | 12  |  |
| Net cost | $ | 30  |  |  | $ | 33  |  |  | $ | 39  |  |

We determine the expected return on plan assets by applying our long-term rate of return assumption to the market-related value of plan assets, adjusted by earnings on contributions and benefit payments expected to be made during the year. We calculate the market-related value of plan assets by amortizing actual versus expected returns over five years.We amortize prior service costs and net actuarial gains or losses on straight-line basis over the average remaining service period of the employees expected to receive benefits under the plan. However, for net actuarial gains or losses, we use a corridor approach that amortizes them only to the extent the gain or loss exceeds 10% of the greater of the projected benefit obligation or market-related value of plan assets.  
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