XML 41 R31.htm IDEA: XBRL DOCUMENT
v3.20.2

Retirement Plans (Tables) | 9 Months Ended
--- | ---
Sep. 30, 2020
Retirement Plans [Abstract] |
Net Periodic Pension And OPEB Cost/(Benefit) | The components of our net periodic pension cost were as follows:
| Three Months Ended |  | Nine Months Ended
| September 30, |  | September 30,
Millions | 2020 | 2019 |  | 2020 | 2019
Service cost | $ | 19 | $ | 23 |  | $ | 72 | $ | 67
Interest cost |  | 33 |  | 40 |  |  | 102 |  | 120
Expected return on plan assets |  | (71) |  | (68) |  |  | (211) |  | (204)
Amortization of actuarial loss |  | 27 |  | 16 |  |  | 79 |  | 48
Net periodic pension cost | $ | 8 | $ | 11 |  | $ | 42 | $ | 31
The components of our net periodic OPEB costs were as follows:
| Three Months Ended |  | Nine Months Ended
| September 30, |  | September 30,
Millions | 2020 | 2019 |  | 2020 | 2019
Service cost | $ | - | $ | - |  | $ | 1 | $ | 1
Interest cost |  | 1 |  | 3 |  |  | 4 |  | 8
Amortization of: |  |  |  |  |  |  |  |  |
Prior service cost |  | (3) |  | (4) |  |  | (10) |  | (4)
Actuarial loss |  | 1 |  | 1 |  |  | 5 |  | 4
Net periodic OPEB cost | $ | (1) | $ | - |  | $ | - | $ | 9

X
- References No definition available. + Details
Name: | us-gaap_GeneralDiscussionOfPensionAndOtherPostretirementBenefitsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
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 -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920 + Details
Name: | us-gaap_ScheduleOfNetBenefitCostsTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration