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v3.22.1

Pensions and Other Postretirement Benefits (Tables) | 3 Months Ended
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Mar. 31, 2022
Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures [Abstract] |
Pension and Other Postretirement Benefit Cost Components | Pension and postretirement benefit cost components were as follows:
| Pension Benefits |  | Other Postretirement Benefits
| First Quarter
| 2022 |  | 2021 |  | 2022 |  | 2021
| ($ in millions)
Service cost | $ | 10 |  |  | $ | 11 |  |  | $ | 1 |  |  | $ | 2 |
Interest cost | 17 |  |  | 13 |  |  | 2 |  |  | 2 |
Expected return on plan assets | (53) |  |  | (48) |  |  | (3) |  |  | (3) |
Amortization of net losses | 12 |  |  | 17 |  |  | — |  |  | — |
Amortization of prior service benefit | — |  |  | — |  |  | (6) |  |  | (6) |
Net benefit | $ | (14) |  |  | $ | (7) |  |  | $ | (6) |  |  | $ | (5) |

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- Definition Tabular disclosure of the components of net benefit costs for pension plans and/or other employee benefit plans including service cost, interest cost, expected return on plan assets, gain (loss), prior service cost or credit, transition asset or obligation, and gain (loss) recognized due to settlements or curtailments. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920 + Details
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