Fair Value Of Financial Instruments (Tables)

9 Months Ended

Sep. 30, 2022

Fair Value Of Financial Instruments [Abstract]

Fair Value Of Long-Term Debt

	September 30, 2022				December 31, 2021
($ in millions)		Carrying Amount		Fair Value		Carrying Amount		Fair Value
Total debt	$	8,966	$	8,015	$	7,777	$	7,996