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Fair Value Of Financial Instruments (Tables)
9 Months Ended
Sep. 30, 2025
Fair Value Of Financial Instruments [Abstract]  
Fair Value Of Long-Term Debt

September 30, 2025

December 31, 2024

($ in millions)

Carrying Amount

Fair Value

Carrying Amount

Fair Value

Total debt

$

12,044

$

12,264

$

11,569

$

11,749