XML 61 R41.htm IDEA: XBRL DOCUMENT
v3.25.1

Benefit Plans (Tables) | 3 Months Ended
--- | ---
Mar. 31, 2025
Retirement Benefits [Abstract] |
Schedule of Components of Net Cost (Benefit) for Pension and Other Postretirement Plans |
Components of net cost (benefit) for pension and other postretirement plans |  |  |  |
|  | Three months ended March 31, |  |
($ in millions) |  | 2025 |  | 2024 |  |  |  |
Pension benefits |  |  |  |  |  |  |  |
Service cost |  | $ | 25 |  |  | $ | 33 |  |  |  |  |
Interest cost |  | 60 |  |  | 58 |  |  |  |  |
Expected return on plan assets |  | (78) |  |  | (77) |  |  |  |  |
Costs and expenses |  | 7 |  |  | 14 |  |  |  |  |
Remeasurement of projected benefit obligation |  | 53 |  |  | (25) |  |  |  |  |
Remeasurement of plan assets |  | 23 |  |  | 25 |  |  |  |  |
Remeasurement (gains) losses |  | 76 |  |  | — |  |  |  |  |
Pension net cost |  | $ | 83 |  |  | $ | 14 |  |  |  |  |
Postretirement benefits |  |  |  |  |  |  |  |
Service cost |  | $ | — |  |  | $ | — |  |  |  |  |
Interest cost |  | 2 |  |  | 2 |  |  |  |  |
Costs and expenses |  | 2 |  |  | 2 |  |  |  |  |
Remeasurement of benefit obligation |  | 2 |  |  | (2) |  |  |  |  |
Remeasurement of plan assets |  | — |  |  | — |  |  |  |  |
Remeasurement (gains) losses |  | 2 |  |  | (2) |  |  |  |  |
Postretirement net cost |  | $ | 4 |  |  | $ | — |  |  |  |  |
Pension and postretirement benefits |  |  |  |  |  |  |  |
Costs and expenses |  | $ | 9 |  |  | $ | 16 |  |  |  |  |
Remeasurement (gains) losses |  | 78 |  |  | (2) |  |  |  |  |
Total net cost |  | $ | 87 |  |  | $ | 14 |  |  |  |  |
Schedule of Pension and Postretirement Benefits Remeasurement Gains and Losses |
Pension and postretirement benefits remeasurement gains and losses |  |  |  |
|  | Three months ended March 31, |  |
($ in millions) |  | 2025 |  | 2024 |  |  |  |
Remeasurement of benefit obligation (gains) losses: |  |  |  |  |  |  |  |
Discount rate |  | $ | 59 |  |  | $ | (41) |  |  |  |  |
Other assumptions |  | (4) |  |  | 14 |  |  |  |  |
Remeasurement of plan assets (gains) losses |  | 23 |  |  | 25 |  |  |  |  |
Remeasurement (gains) losses |  | $ | 78 |  |  | $ | (2) |  |  |  |  |

X
- References No definition available. + Details
Name: | us-gaap_CompensationAndRetirementDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- 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 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -SubTopic 20 -Topic 715 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480506/715-20-50-1 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 55 -Paragraph 17 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480482/715-20-55-17 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480506/715-20-50-3 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480506/715-20-50-4 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480506/715-20-50-2 + Details
Name: | us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- 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 -Topic 715 -SubTopic 20 -Subparagraph (h) -Name Accounting Standards Codification -Paragraph 1 -Section 50 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480506/715-20-50-1 + Details
Name: | us-gaap_ScheduleOfNetBenefitCostsTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration