Fair Value Of Financial Instruments (Tables)

6 Months Ended

Jun. 30, 2022

Fair Value Of Financial Instruments [Abstract]

Fair Value Of Long-Term Debt

	June 30, 2022				December 31, 2021
($ in millions)		Carrying Amount		Fair Value		Carrying Amount		Fair Value
Total debt	$	8,970	$	7,995	$	7,777	$	7,996