Income Taxes (Unaudited) (Tables)

3 Months Ended

Mar. 31, 2015

Income Tax Disclosure [Abstract]

Schedule of Income Tax Expense and Effective Income Tax Rates

	Three Months Ended March 31
$ in millions	2015			2014
Federal and foreign income tax expense	$	220		$	207
Effective income tax rate	31.3		%	26.3		%