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v3.23.1

Benefit Plans (Tables) | 3 Months Ended
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Mar. 31, 2023
Retirement Benefits [Abstract] |
Schedule of company's pension and postretirement benefit plans |
Components of net cost (benefit) for pension and other postretirement plans |  |  |  |
|  | Three months ended March 31, |  |
($ in millions) |  | 2023 |  | 2022 |  |  |  |
Pension benefits |  |  |  |  |  |  |  |
Service cost |  | $ | 33 |  |  | $ | 29 |  |  |  |  |
Interest cost |  | 60 |  |  | 46 |  |  |  |  |
Expected return on plan assets |  | (77) |  |  | (110) |  |  |  |  |
Amortization of prior service credit |  | — |  |  | (13) |  |  |  |  |
Costs and expenses |  | 16 |  |  | (48) |  |  |  |  |
Remeasurement of projected benefit obligation |  | 123 |  |  | (752) |  |  |  |  |
Remeasurement of plan assets |  | (180) |  |  | 529 |  |  |  |  |
Remeasurement (gains) losses |  | (57) |  |  | (223) |  |  |  |  |
Pension net benefit |  | $ | (41) |  |  | $ | (271) |  |  |  |  |
Postretirement benefits |  |  |  |  |  |  |  |
Service cost |  | $ | — |  |  | $ | — |  |  |  |  |
Interest cost |  | 3 |  |  | 2 |  |  |  |  |
Amortization of prior service credit |  | (6) |  |  | (6) |  |  |  |  |
Costs and expenses |  | (3) |  |  | (4) |  |  |  |  |
Remeasurement of projected benefit obligation |  | 4 |  |  | (24) |  |  |  |  |
Remeasurement of plan assets |  | — |  |  | — |  |  |  |  |
Remeasurement (gains) losses |  | 4 |  |  | (24) |  |  |  |  |
Postretirement net cost (benefit) |  | $ | 1 |  |  | $ | (28) |  |  |  |  |
Pension and postretirement benefits |  |  |  |  |  |  |  |
Costs and expenses |  | $ | 13 |  |  | $ | (52) |  |  |  |  |
Remeasurement (gains) losses |  | (53) |  |  | (247) |  |  |  |  |
Total net benefit |  | $ | (40) |  |  | $ | (299) |  |  |  |  |
Pension and postretirement benefits remeasurement gains and losses |  |  |  |
|  | Three months ended March 31, |  |
($ in millions) |  | 2023 |  | 2022 |  |  |  |
Remeasurement of projected benefit obligation (gains) losses: |  |  |  |  |  |  |  |
Discount rate |  | $ | 124 |  |  | $ | (585) |  |  |  |  |
Other assumptions |  | 3 |  |  | (191) |  |  |  |  |
Remeasurement of plan assets (gains) losses |  | (180) |  |  | 529 |  |  |  |  |
Remeasurement (gains) losses |  | $ | (53) |  |  | $ | (247) |  |  |  |  |

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- Definition Tabular disclosure of one or more of the entity's defined benefit pension plans or one or more other defined benefit postretirement plans, separately for pension plans and other postretirement benefit plans including the entity's schedule of fair value of plan assets for defined benefit or other postretirement plans. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 55 -Paragraph 17 -URI https://asc.fasb.org/extlink&oid=123450688&loc=d3e4179-114921 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 4 -URI https://asc.fasb.org/extlink&oid=123447040&loc=d3e2439-114920 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 2 -URI https://asc.fasb.org/extlink&oid=123447040&loc=d3e2410-114920 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 3 -URI https://asc.fasb.org/extlink&oid=123447040&loc=d3e2417-114920 + Details
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