Income Taxes (Unaudited) (Tables)

3 Months Ended

Mar. 31, 2021

Income Tax Disclosure [Abstract]

Schedule of Income Tax Expense and Effective Income Tax Rates

	Three Months Ended March 31
$ in millions	2021			2020
Federal and foreign income tax expense	$	821		$	185
Effective income tax rate	27.2		%	17.6		%