Income Taxes (Unaudited) (Tables)

3 Months Ended

Mar. 31, 2020

Income Tax Disclosure [Abstract]

Schedule of Income Tax Expense and Effective Income Tax Rates

	Three Months Ended March 31
$ in millions	2020			2019
Federal and foreign income tax expense	$	185		$	171
Effective income tax rate	17.6		%	16.5		%