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v3.21.2

Pension and Postretirement Benefit Plans - Components of net periodic benefit cost and other information (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2021 | Sep. 30, 2020
Non-operating expense |  |  |  |
Total net periodic benefit cost (benefit) | $ (80) | $ (40) | $ (239) | $ (116)
Postretirement Benefits |  |  |  |
Operating expense |  |  |  |
Service cost | 12 | 11 | 35 | 33
Non-operating expense |  |  |  |
Interest cost | 11 | 16 | 33 | 48
Expected return on plan assets | (19) | (20) | (58) | (60)
Amortization of transition asset | 0 | 0 | 0 | 0
Amortization of prior service benefit | (9) | (8) | (25) | (24)
Amortization of net actuarial loss | 14 | 11 | 42 | 34
Settlements, curtailments, special termination benefits and other | 0 | 1 | 2 | 3
Total non-operating expense (benefit) | (3) | 0 | (6) | 1
Total net periodic benefit cost (benefit) | 9 | 11 | 29 | 34
United States | Qualified and Non-qualified Pension Benefits |  |  |  |
Operating expense |  |  |  |
Service cost | 72 | 66 | 216 | 197
Non-operating expense |  |  |  |
Interest cost | 90 | 124 | 270 | 373
Expected return on plan assets | (264) | (263) | (792) | (786)
Amortization of transition asset | 0 | 0 | 0 | 0
Amortization of prior service benefit | (6) | (6) | (18) | (18)
Amortization of net actuarial loss | 132 | 123 | 396 | 368
Settlements, curtailments, special termination benefits and other | 0 | 0 | 0 | 0
Total non-operating expense (benefit) | (48) | (22) | (144) | (63)
Total net periodic benefit cost (benefit) | 24 | 44 | 72 | 134
International | Qualified and Non-qualified Pension Benefits |  |  |  |
Operating expense |  |  |  |
Service cost | 41 | 39 | 125 | 115
Non-operating expense |  |  |  |
Interest cost | 25 | 31 | 75 | 95
Expected return on plan assets | (81) | (77) | (244) | (232)
Amortization of transition asset | 1 | 1 | 2 | 2
Amortization of prior service benefit | 0 | (1) | (2) | (4)
Amortization of net actuarial loss | 26 | 28 | 80 | 85
Settlements, curtailments, special termination benefits and other | 0 | 0 | 0 | 0
Total non-operating expense (benefit) | (29) | (18) | (89) | (54)
Total net periodic benefit cost (benefit) | $ 12 | $ 21 | $ 36 | $ 61

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- Definition Amount of gain (loss) recognized in net periodic benefit (cost) credit of defined benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 45 -Paragraph 3A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123453770&loc=SL108413299-114919 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h)(4) -URI http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 55 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=123450688&loc=d3e4179-114921 Reference 4: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 55 -Paragraph 18 -URI http://asc.fasb.org/extlink&oid=123450688&loc=d3e4587-114921 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 6 -Subparagraph (a)(4) -URI http://asc.fasb.org/extlink&oid=123447040&loc=d3e2709-114920 + Details
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