v3.20.4

Income Taxes (Reconciliation Of Income Tax Expense (Benefit) Based On Federal Statutory Rate To Amount Per Effective Tax Rate) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Income Tax Disclosure [Abstract] |  |  |
Taxes computed at federal statutory rate | $ (600) | $ 3,878 | $ 5,223
Increases (decreases) in income taxes resulting from: |  |  |
State and local income taxes - net of federal income tax benefit | 193 | 611 | 738
Enactment date and measurement period adjustments from the Act | 0 | 0 | (718)
Tax on foreign investments | (141) | (115) | (466)
Noncontrolling interest | (285) | (230) | (121)
Permanent items and R&D credit | (239) | (285) | (189)
Audit resolutions | (112) | (156) | 544
Divestitures | 107 | 0 | 0
Goodwill impairment | 2,120 | 0 | 0
Other - net | (78) | (210) | (91)
Total | $ 965 | $ 3,493 | $ 4,920
Effective Tax Rate | (33.80%) | 18.90% | 19.80%

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