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Employee Benefit Plans - Amounts Recognized in Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Millions | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Before tax basis amount in accumulated other comprehensive loss. |  |
Total recognized at December 31 | $ 4,979 | $ 7,278
Other Benefits |  |
Before tax basis amount in accumulated other comprehensive loss. |  |
Net actuarial loss | 134 | 260
Prior service (credit) costs | (159) | (186)
Total recognized at December 31 | (25) | 74
U.S. | Pension Benefits |  |
Before tax basis amount in accumulated other comprehensive loss. |  |
Net actuarial loss | 4,007 | 5,714
Prior service (credit) costs | 2 | 3
Total recognized at December 31 | 4,009 | 5,717
Int’l. | Pension Benefits |  |
Before tax basis amount in accumulated other comprehensive loss. |  |
Net actuarial loss | 920 | 1,401
Prior service (credit) costs | 75 | 86
Total recognized at December 31 | $ 995 | $ 1,487

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- Definition Amount, before tax, of accumulated other comprehensive income (loss) for gain (loss) of defined benefit plan, that has not been recognized in net periodic benefit (cost) credit. + 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 (j) -URI http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=124509347&loc=SL7669686-108580 + Details
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