Earnings Per Share (Note)

9 Months Ended

Sep. 30, 2013

Earnings Per Share, Basic and Diluted, Other Disclosures [Abstract]

Earnings Per Share Disclosure [Text Block]

Earnings Per Share

For the Current Quarter, the Prior Quarter, the Current Period and the Prior Period, our contingent convertible senior notes did not have a dilutive effect and therefore were excluded from the calculation of diluted earnings per share (EPS). See Note 3 for further discussion of our contingent convertible senior notes. Participating securities, for purposes of our EPS computations, consist of unvested restricted stock issued to our employees and non-employee directors that provide dividend rights.

For the Current Quarter, the Prior Quarter, the Current Period and the Prior Period, the following shares of cumulative convertible preferred stock and unvested restricted stock and associated adjustments to net income, consisting of dividends on such shares, were excluded from the calculation of diluted EPS, as the effect was antidilutive:

	Net Income Adjustments		Shares
	($ in millions)		(in millions)
Three Months Ended September 30, 2013:
Common stock equivalent of our preferred stock outstanding:
5.75% cumulative convertible preferred stock	$	21	56
5.75% cumulative convertible preferred stock (series A)	$	16	39
5.00% cumulative convertible preferred stock (series 2005B)	$	3	5
4.50% cumulative convertible preferred stock	$	3	6
Unvested restricted stock	$	3	2
Three Months Ended September 30, 2012:
Common stock equivalent of our preferred stock outstanding:
5.75% cumulative convertible preferred stock	$	21	56
5.75% cumulative convertible preferred stock (series A)	$	16	39
5.00% cumulative convertible preferred stock (series 2005B)	$	3	5
4.50% cumulative convertible preferred stock	$	3	6
Unvested restricted stock	$	—	3
Nine Months Ended September 30, 2013:
Common stock equivalent of our preferred stock outstanding:
5.75% cumulative convertible preferred stock	$	64	56
5.75% cumulative convertible preferred stock (series A)	$	47	40
5.00% cumulative convertible preferred stock (series 2005B)	$	8	5
4.50% cumulative convertible preferred stock	$	9	6
Unvested restricted stock	$	14	3
Nine Months Ended September 30, 2012:
Common stock equivalent of our preferred stock outstanding:
5.75% cumulative convertible preferred stock	$	64	56
5.75% cumulative convertible preferred stock (series A)	$	47	39
5.00% cumulative convertible preferred stock (series 2005B)	$	8	5
4.50% cumulative convertible preferred stock	$	9	6
Unvested restricted stock	$	—	4