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Employee Benefit Plans - Net Periodic Benefit Cost (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Changes Recognized in Comprehensive Income |  |  |
Net actuarial (gain) loss during period | $ (1,244) | $ 2,004 | $ 2,404
Amortization of actuarial loss | (1,069) | (1,107) | (519)
Prior service (credits) costs during period | 0 | 0 | 28
Amortization of prior service (costs) credits | 14 | 23 | (4)
Other Benefits |  |  |
Net Periodic Benefit Cost |  |  |
Service cost | 43 | 38 | 36
Interest cost | 53 | 71 | 96
Expected return on plan assets | 0 | 0 | 0
Amortization of prior service costs (credits) | (27) | (28) | (28)
Recognized actuarial losses | 16 | 3 | (3)
Settlement losses | 0 | 0 | 0
Curtailment losses (gains) | 0 | (27) | 0
Total net periodic benefit cost | 85 | 57 | 101
Changes Recognized in Comprehensive Income |  |  |
Net actuarial (gain) loss during period | (111) | 190 | 128
Amortization of actuarial loss | (15) | (4) | 3
Prior service (credits) costs during period | 0 | 0 | (1)
Amortization of prior service (costs) credits | 27 | 42 | 28
Total changes recognized in other comprehensive income | (99) | 228 | 158
Recognized in Net Periodic Benefit Cost and Other Comprehensive Income | (14) | 285 | 259
U.S. | Pension Benefits |  |  |
Net Periodic Benefit Cost |  |  |
Service cost | 450 | 497 | 406
Interest cost | 235 | 353 | 397
Expected return on plan assets | (596) | (650) | (565)
Amortization of prior service costs (credits) | 2 | 2 | 2
Recognized actuarial losses | 309 | 385 | 239
Settlement losses | 672 | 620 | 259
Curtailment losses (gains) | 0 | 92 | 0
Total net periodic benefit cost | 1,072 | 1,299 | 738
Changes Recognized in Comprehensive Income |  |  |
Net actuarial (gain) loss during period | (725) | 1,584 | 1,939
Amortization of actuarial loss | (981) | (1,005) | (498)
Prior service (credits) costs during period | 0 | 0 | 0
Amortization of prior service (costs) credits | (2) | (2) | (2)
Total changes recognized in other comprehensive income | (1,708) | 577 | 1,439
Recognized in Net Periodic Benefit Cost and Other Comprehensive Income | (636) | 1,876 | 2,177
Int’l. | Pension Benefits |  |  |
Net Periodic Benefit Cost |  |  |
Service cost | 123 | 130 | 139
Interest cost | 137 | 175 | 199
Expected return on plan assets | (171) | (209) | (231)
Amortization of prior service costs (credits) | 8 | 10 | 11
Recognized actuarial losses | 46 | 45 | 21
Settlement losses | 7 | 37 | 3
Curtailment losses (gains) | (1) | 2 | 16
Total net periodic benefit cost | 149 | 190 | 158
Changes Recognized in Comprehensive Income |  |  |
Net actuarial (gain) loss during period | (408) | 230 | 338
Amortization of actuarial loss | (73) | (98) | (24)
Prior service (credits) costs during period | 0 | 0 | 29
Amortization of prior service (costs) credits | (11) | (17) | (30)
Total changes recognized in other comprehensive income | (492) | 115 | 313
Recognized in Net Periodic Benefit Cost and Other Comprehensive Income | $ (343) | $ 305 | $ 471

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- Definition Amount recognized in net periodic benefit cost (credit) and other comprehensive (income) loss. + References Reference 1: 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 + Details
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- Definition Amount of gain (loss), recognized immediately as component of net periodic benefit (cost) credit, for change in value of benefit obligation or plan assets from experience different from that assumed, change in actuarial assumption, or consequence of temporarily deviating from substantive plan. Includes, but is not limited to, amount in excess of ten percent of greater of fair value of plan assets or benefit obligation. + References Reference 1: 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 2: 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 Reference 3: 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 + Details
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- Definition Amount of prior service cost (credit) recognized in net periodic benefit cost (credit) of defined benefit plan. + References Reference 1: 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 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h)(5) -URI http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920 Reference 3: 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 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)(5) -URI http://asc.fasb.org/extlink&oid=123447040&loc=d3e2709-114920 + Details
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- Definition Amount of expected return (loss) recognized in net periodic benefit (cost) credit, calculated based on expected long-term rate of return and market-related value of plan assets of defined benefit plan. + References Reference 1: 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 2: 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 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h)(3) -URI http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920 Reference 4: 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 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 6 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=123447040&loc=d3e2709-114920 + Details
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- Definition Amount of gain (loss) recognized in net periodic benefit (cost) credit from event reducing expected years of future service of present employees or eliminating accrual of defined benefits for some or all future services of present employees. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 45 -Paragraph 3A -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)(7) -URI http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 6 -Subparagraph (a)(7) -URI http://asc.fasb.org/extlink&oid=123447040&loc=d3e2709-114920 + Details
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