Supplemental Disclosures (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Supplemental Cash Flow Information [Abstract]
Non-cash issuances of common stock	$ 372	$ 228	$ 219
Stock-based compensation expense	$ 367	$ 348	$ 290

The fair value of stock issued in noncash financing activities.

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