XML 62 R33.htm IDEA: XBRL DOCUMENT
v3.20.1

Benefit Plans (Tables) | 3 Months Ended
--- | ---
Mar. 31, 2020
Retirement Benefits [Abstract] |
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) |  | 2020 |  | 2019
Pension benefits |  |  |  |
Service cost |  | $ | 28 |  |  | $ | 28 |
Interest cost |  | 56 |  |  | 65 |
Expected return on plan assets |  | (104 | ) |  | (93 | )
Amortization of prior service credit |  | (14 | ) |  | (14 | )
Costs and expenses |  | (34 | ) |  | (14 | )
Remeasurement of projected benefit obligation |  | (116 | ) |  | 387 |
Remeasurement of plan assets |  | 434 |  |  | (391 | )
Remeasurement (gains) losses |  | 318 |  |  | (4 | )
Pension net cost (benefit) |  | $ | 284 |  |  | $ | (18 | )
Postretirement benefits |  |  |  |
Service cost |  | $ | 1 |  |  | $ | 2 |
Interest cost |  | 3 |  |  | 4 |
Amortization of prior service credit |  | (1 | ) |  | (1 | )
Costs and expenses |  | 3 |  |  | 5 |
Remeasurement of projected benefit obligation |  | — |  |  | 19 |
Remeasurement of plan assets |  | — |  |  | — |
Remeasurement (gains) losses |  | — |  |  | 19 |
Postretirement net cost |  | $ | 3 |  |  | $ | 24 |
Pension and postretirement benefits |  |  |  |
Costs and expenses |  | $ | (31 | ) |  | $ | (9 | )
Remeasurement (gains) losses |  | 318 |  |  | 15 |
Total net cost |  | $ | 287 |  |  | $ | 6 |
D ifferences between expected and actual returns on plan assets and changes in assumptions affect the Company’s pension and other postretirement obligations, plan assets and expenses.
Pension and postretirement benefits remeasurement gains and losses |  |  |  |
|  | Three months ended March 31,
($ in millions) |  | 2020 |  | 2019
Remeasurement of projected benefit obligation (gains) losses - discount rate |  | $ | (36 | ) |  | $ | 265 |
Remeasurement of projected benefit obligation (gains) losses - other assumptions |  | (80 | ) |  | 141 |
Remeasurement of plan assets (gains) losses |  | 434 |  |  | (391 | )
Remeasurement (gains) losses |  | $ | 318 |  |  | $ | 15 |

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 -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 55 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=118257860&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 http://asc.fasb.org/extlink&oid=118255775&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 http://asc.fasb.org/extlink&oid=118255775&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 http://asc.fasb.org/extlink&oid=118255775&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 http://asc.fasb.org/extlink&oid=118255775&loc=d3e2417-114920 + Details
Name: | us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration