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Supplemental Disclosures to the Consolidated Statements of Cash Flows (Narrative) (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2024 | Jun. 30, 2023
Supplemental Cash Flow Information [Abstract] |  |  |  |
Non-cash issuance of common stock |  |  | $ 321 | $ 296
Stock-based compensation expense, equity awards | $ 90 | $ 92 | $ 193 | $ 191

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