Income Taxes (Unaudited) (Tables)

9 Months Ended

Sep. 30, 2023

Income Tax Disclosure [Abstract]

Schedule of Income Tax Expense and Effective Income Tax Rates

	Three Months Ended September 30						Nine Months Ended September 30
$ in millions	2023			2022			2023			2022
Federal and foreign income tax expense	$	181		$	175		$	512		$	568
Effective income tax rate	16.2		%	16.1		%	16.5		%	16.8		%