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SHAREOWNERS' EQUITY - Activity in Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2023 | Mar. 31, 2022
Accumulated Other Comprehensive Income (Loss) [Roll Forward] |  |
Balance at beginning of period | $ (1,549) |
Translation adjustment (net of tax effect of $(15) and $0) | 118 | $ (40)
Current period changes in fair value (net of tax effect of $1 and $(2)) | 7 | (6)
Current period changes in fair value (net of tax effect of $(8) and $23) | (77) | 43
Balance at end of period | (1,481) | (3,257)
Foreign currency translation gain (loss) |  |
Accumulated Other Comprehensive Income (Loss) [Roll Forward] |  |
Balance at beginning of period | (1,446) | (1,162)
Translation adjustment (net of tax effect of $(15) and $0) | 115 | (40)
Reclassification to earnings (net of tax effect of $0 and $0) | 3 | 0
Balance at end of period | (1,328) | (1,202)
Translation adjustment, tax effect | (15) | 0
Reclassification to earnings, tax effect | 0 | 0
Unrealized gain (loss) on marketable securities |  |
Accumulated Other Comprehensive Income (Loss) [Roll Forward] |  |
Balance at beginning of period | (11) | (1)
Current period changes in fair value (net of tax effect of $1 and $(2)) | 5 | (6)
Reclassification to earnings (net of tax effect of $1 and $0) | 2 | 0
Balance at end of period | (4) | (7)
Current period changes in fair value, tax effect | 1 | (2)
Reclassification to earnings, tax effect | 1 | 0
Unrealized gain (loss) on cash flow hedges |  |
Accumulated Other Comprehensive Income (Loss) [Roll Forward] |  |
Balance at beginning of period | 167 | (17)
Current period changes in fair value (net of tax effect of $(8) and $23) | (26) | 72
Reclassification to earnings (net of tax effect of $(16) and $(9)) | (51) | (29)
Balance at end of period | 90 | 26
Current period changes in fair value, tax effect | (8) | 23
Reclassification to earnings, tax effect | (16) | (9)
Unrecognized pension and postretirement benefit costs |  |
Accumulated Other Comprehensive Income (Loss) [Roll Forward] |  |
Balance at beginning of period | (259) | (2,098)
Net actuarial gain (loss) resulting from remeasurements of plan assets and liabilities (net of tax effect of $0 and $11) | 0 | 31
Reclassification to earnings (net of tax effect of $7 and $(3)) | 20 | (7)
Balance at end of period | (239) | (2,074)
Net actuarial gain (loss) resulting from remeasurements of plan assets and liabilities, tax effect | 0 | 11
Reclassification to earnings, tax effect | $ 7 | $ (3)

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- Definition Other Comprehensive Income Net Actuarial Gains and Prior Service Cost Arising During Period, Tax + References No definition available. + Details
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- Definition Amount, after tax, of accumulated increase (decrease) in equity from transaction and other event and circumstance from nonowner source. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -Publisher FASB -URI https://asc.fasb.org//1943274/2147482790/220-10-45-14A Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 11 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482790/220-10-45-11 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 65 -Paragraph 2 -Subparagraph (g)(2)(ii) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480016/944-40-65-2 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 65 -Paragraph 2 -Subparagraph (h)(2) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480016/944-40-65-2 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(30)(a)(4)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(23)(a)(3)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479440/944-210-S99-1 Reference 7: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482790/220-10-45-14 + Details
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