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CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Parenthetical) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
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Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2023 | Sep. 30, 2022
Statement of Comprehensive Income [Abstract] |  |  |  |
Change in fair value of derivatives, tax | $ (3) | $ (31) | $ (25) | $ (17)
Derivative amounts reclassified to net income, tax | 4 | (16) | 14 | (57)
Change in retirement and other postretirement benefit plan obligations, tax | (1) | (1) | (1) | (3)
Other comprehensive income (loss) of unconsolidated affiliates, tax | $ 0 | $ (1) | $ 1 | $ (5)

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- Definition Amount, before reclassification, of tax expense (benefit) for gain (loss) from derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 12 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482790/220-10-45-12 + Details
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