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Consolidated Balance Sheets (Parenthetical) - USD ($)
shares in Millions, $ in Millions
Sep. 30, 2025
Dec. 31, 2024
Statement of Financial Position [Abstract]    
Allowance for accounts receivable $ 100 $ 84
Accumulated depreciation $ 12,230 $ 12,212
Common Stock, shares authorized (in shares) 450 450
Common Stock, shares outstanding (in shares) 286 285