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Condensed Consolidated Balance Sheet (Parenthetical) - USD ($)
shares in Millions, $ in Millions
Mar. 31, 2024
Dec. 31, 2023
Condensed Consolidated Balance Sheet (Parenthetical) [Abstract]    
Accumulated depreciation, property and equipment $ 14,600 $ 14,279
Common stock, shares outstanding 435 434
Common stock, shares authorized 1,200 1,200
Common stock, par value $ 0.01 $ 0.01