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Supplemental Financial Information - Cash Flows (Details) - USD ($) $ in Millions | 6 Months Ended
--- | ---
Jun. 30, 2021 | Jun. 30, 2020
Cash flow disclosures |  |
Payment of cash taxes | $ 715 | $ 285
Net tax benefits primarily as a result of the resolution of various tax positions related to prior years related to discontinued operation |  | 20
Defined Benefit Plans |  |
Cash flow disclosures |  |
Pension contributions | $ 80 | $ 335

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- Definition Amount of increase (decrease) to previously recorded tax expense. Includes, but is not limited to, significant settlements of income tax disputes, and unusual tax positions or infrequent actions taken by the entity, including tax assessment reversal, and IRS tax settlement, related to discontinued operation. + References No definition available. + Details
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