Income Taxes (Unaudited) (Tables)

3 Months Ended

Mar. 31, 2014

Income Tax Disclosure [Abstract]

Schedule of Income Tax Expense and Effective Income Tax Rates

	Three Months Ended March 31
$ in millions	2014			2013
Federal and foreign income tax expense	$	207		$	223
Effective income tax rate	26.3		%	31.3		%