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v3.20.4

Benefit Plans - Changes not yet recognized (Details) $ in Millions | 12 Months Ended
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Dec. 31, 2020 USD ($)
Pension benefits |
Change in items not yet recognized as a component of defined benefit plans, net periodic cost |
Items not yet recognized as a component of net cost – December 31, 2019 | $ (142)
Prior service credit arising during the period | 0
Prior service credit recognized during the period due to curtailment | 10
Prior service credit amortized to net cost | 54
Translation adjustment and other | 0
Items not yet recognized as a component of net cost – December 31, 2020 | (78)
Postretirement benefits |
Change in items not yet recognized as a component of defined benefit plans, net periodic cost |
Items not yet recognized as a component of net cost – December 31, 2019 | (13)
Prior service credit arising during the period | (102)
Prior service credit recognized during the period due to curtailment | 18
Prior service credit amortized to net cost | 10
Translation adjustment and other | (2)
Items not yet recognized as a component of net cost – December 31, 2020 | $ (89)

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- Definition Amount, before tax, of reclassification adjustment from accumulated other comprehensive (income) loss for prior service cost (credit) of defined benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 17A -URI http://asc.fasb.org/extlink&oid=121641772&loc=SL34724391-108580 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=121641772&loc=d3e689-108580 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=121641772&loc=d3e637-108580 + Details
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