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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 doubtful accounts $ 70 $ 74
Preferred stock, par value (in dollars per share) $ 0.01 $ 0.01
Preferred stock, shares authorized (in shares) 50 50
Preferred stock, shares issued (in shares) 0 0
Common stock, par value (in dollars per share) $ 0.01 $ 0.01
Common stock, shares authorized (in shares) 750 750
Common stock, shares issued (in shares) 313 313
Treasury stock (in shares) 3 1