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Taxes on Income (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2021 | Jun. 30, 2020 | Jun. 30, 2021 | Jun. 30, 2020
Income Tax Examination [Line Items] |  |  |  |
Effective income tax rate (as percent) | 29.30% | 14.40% | 15.80% | 15.60%
Internal Revenue Service (IRS) | Domestic Tax Authority |  |  |  |
Income Tax Examination [Line Items] |  |  |  |
Tax benefit recognized related to settlement |  |  | $ 236 |
Income taxes paid |  |  | 190 |
Internal Revenue Service (IRS) | Domestic Tax Authority | Continuing Operations |  |  |  |
Income Tax Examination [Line Items] |  |  |  |
Tax benefit recognized related to settlement |  |  | 207 |
Income taxes paid |  |  | 172 |
Internal Revenue Service (IRS) | Domestic Tax Authority | Discontinued Operations |  |  |  |
Income Tax Examination [Line Items] |  |  |  |
Tax benefit recognized related to settlement |  |  | 29 |
Income taxes paid |  |  | $ 18 |

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