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Earnings Per Share (Tables)

12 Months Ended

Dec. 31, 2015

Text Block [Abstract]

Schedule Of Basic And Diluted Earnings Per Share

			Years Ended December 31,
$ in millions except share and per share amounts			2015			2014				2013
Basic earnings per share:
	Net income (loss)		$	180		$	569		$	250
	Less: undistributed earnings allocated to participating securities			6			16			5
	Net income (loss) available to common shareholders			174			553			245

	Basic weighted average shares⁽¹⁾			163,936,318			188,171,503			189,071,011

	Net income (loss) per basic common share		$	1.06		$	2.94		$	1.30

Diluted earnings per share:
	Net income (loss)		$	180		$	569		$	250
	Less: undistributed earnings allocated to participating securities			6			15			5
	Less: mark-to-market gain (loss) on warrants			-			28			-
	Net income (loss) available to common shareholders			174			526			245

	Basic weighted average shares⁽¹⁾			163,936,318			188,171,503			189,071,011
	Effect of common stock equivalents:
	Stock options			933,470			1,104,247			1,241,902
	Warrants			-			1,622,877			-
	Diluted weighted average shares			164,869,788			190,898,627			190,312,913

	Net income (loss) per diluted common share		$	1.06		$	2.76		$	1.29


	(1) Includes 617,909, 412,769 and 629,896 of participating securities that met the service condition and were eligible to receive nonforfeitable dividends or dividend
	equivalents for the years ended December 31, 2015, 2014 and 2013, respectively.