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v3.22.2

Benefit Plans (Tables) | 6 Months Ended
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Jun. 30, 2022
Retirement Benefits [Abstract] |
Company's pension and postretirement benefit plans |
Components of net cost (benefit) for pension and other postretirement plans |  |  |  |
|  | Three months ended June 30, |  | Six months ended June 30,
($ in millions) |  | 2022 |  | 2021 |  | 2022 |  | 2021
Pension benefits |  |  |  |  |  |  |  |
Service cost |  | $ | 28 |  |  | $ | 25 |  |  | $ | 57 |  |  | $ | 51 |
Interest cost |  | 52 |  |  | 52 |  |  | 98 |  |  | 98 |
Expected return on plan assets |  | (100) |  |  | (109) |  |  | (210) |  |  | (226) |
Amortization of prior service credit |  | (12) |  |  | (12) |  |  | (25) |  |  | (25) |
Costs and expenses |  | (32) |  |  | (44) |  |  | (80) |  |  | (102) |
Remeasurement of projected benefit obligation |  | (421) |  |  | 245 |  |  | (1,173) |  |  | (267) |
Remeasurement of plan assets |  | 699 |  |  | (388) |  |  | 1,228 |  |  | (167) |
Remeasurement (gains) losses |  | 278 |  |  | (143) |  |  | 55 |  |  | (434) |
Pension net cost (benefit) |  | $ | 246 |  |  | $ | (187) |  |  | $ | (25) |  |  | $ | (536) |
Postretirement benefits |  |  |  |  |  |  |  |
Service cost |  | $ | 1 |  |  | $ | 1 |  |  | $ | 1 |  |  | $ | 1 |
Interest cost |  | 2 |  |  | 2 |  |  | 4 |  |  | 4 |
Amortization of prior service credit |  | (6) |  |  | (7) |  |  | (12) |  |  | (13) |
Costs and expenses |  | (3) |  |  | (4) |  |  | (7) |  |  | (8) |
Remeasurement of projected benefit obligation |  | (19) |  |  | 9 |  |  | (43) |  |  | (10) |
Remeasurement of plan assets |  | — |  |  | — |  |  | — |  |  | — |
Remeasurement (gains) losses |  | (19) |  |  | 9 |  |  | (43) |  |  | (10) |
Postretirement net (benefit) cost |  | $ | (22) |  |  | $ | 5 |  |  | $ | (50) |  |  | $ | (18) |
Pension and postretirement benefits |  |  |  |  |  |  |  |
Costs and expenses |  | $ | (35) |  |  | $ | (48) |  |  | $ | (87) |  |  | $ | (110) |
Remeasurement (gains) losses |  | 259 |  |  | (134) |  |  | 12 |  |  | (444) |
Total net cost (benefit) |  | $ | 224 |  |  | $ | (182) |  |  | $ | (75) |  |  | $ | (554) |
Pension and postretirement benefits remeasurement gains and losses |  |  |  |
|  | Three months ended June 30, |  | Six months ended June 30,
($ in millions) |  | 2022 |  | 2021 |  | 2022 |  | 2021
Remeasurement of projected benefit obligation (gains) losses: |  |  |  |  |  |  |  |
Discount rate |  | $ | (420) |  |  | $ | 178 |  |  | $ | (1,005) |  |  | $ | (239) |
Other assumptions |  | (20) |  |  | 76 |  |  | (211) |  |  | (38) |
Remeasurement of plan assets (gains) losses |  | 699 |  |  | (388) |  |  | 1,228 |  |  | (167) |
Remeasurement (gains) losses |  | $ | 259 |  |  | $ | (134) |  |  | $ | 12 |  |  | $ | (444) |

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