v2.4.0.8

Earnings Per Share (Tables) | 6 Months Ended
--- | ---
Jun. 30, 2014
Earnings Per Share, Basic and Diluted, Other Disclosures [Abstract] |
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Table Text Block] | The impact of our stock options was immaterial in the calculation of diluted EPS for these periods.
|  | Net Income Adjustments |  | Shares
|  | ($ in millions) |  | (in millions)
Three Months Ended June 30, 2014: |  |  |  |
Common stock equivalent of our preferred stock outstanding: |  |  |  |
5.75% cumulative convertible preferred stock |  | $ | 22 |  |  | 59 |
5.75% cumulative convertible preferred stock (series A) |  | $ | 16 |  |  | 42 |
5.00% cumulative convertible preferred stock (series 2005B) |  | $ | 3 |  |  | 6 |
4.50% cumulative convertible preferred stock |  | $ | 3 |  |  | 6 |
Unvested restricted stock |  | $ | 3 |  |  | 3 |
Six Months Ended June 30, 2014: |  |  |  |
Common stock equivalent of our preferred stock outstanding: |  |  |  |
5.00% cumulative convertible preferred stock (series 2005B) |  | $ | 5 |  |  | 6 |
4.50% cumulative convertible preferred stock |  | $ | 6 |  |  | 6 |
Unvested restricted stock |  | $ | 11 |  |  | 3 |
Six Months Ended June 30, 2013: |  |  |  |
Common stock equivalent of our preferred stock outstanding: |  |  |  |
5.75% cumulative convertible preferred stock |  | $ | 43 |  |  | 56 |
5.75% cumulative convertible preferred stock (series A) |  | $ | 32 |  |  | 39 |
5.00% cumulative convertible preferred stock (series 2005B) |  | $ | 5 |  |  | 5 |
4.50% cumulative convertible preferred stock |  | $ | 6 |  |  | 6 |
Unvested restricted stock |  | $ | 11 |  |  | 5 |
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] | A reconciliation of basic EPS and diluted EPS for these periods is as follows:
|  | Net Income Available to Common Stockholders (Numerator) |  | Weighted Average Shares (Denominator) |  | Per Share Amount
|  | (in millions, except per share data)
Three Months Ended June 30, 2013: |  |  |  |  |  |
Basic EPS |  | $ | 457 |  |  | 653 |  |  | $ | 0.70 |
Effect of Dilutive Securities: |  |  |  |  |  |
Assumed conversion as of the beginning of the period of preferred shares outstanding during the period: |  |  |  |  |  |
Common shares assumed issued for 5.75% cumulative convertible preferred stock |  | 21 |  |  | 56 |  |  |
Common shares assumed issued for 5.75% cumulative convertible preferred stock (series A) |  | 16 |  |  | 40 |  |  |
Common shares assumed issued for 4.50% cumulative convertible preferred stock |  | 3 |  |  | 6 |  |  |
Common shares assumed issued for 5.00% cumulative convertible preferred stock (series 2005B) |  | 3 |  |  | 5 |  |  |
Diluted EPS |  | $ | 500 |  |  | 760 |  |  | $ | 0.66 |
Six Months Ended June 30, 2014: |  |  |  |  |  |
Basic EPS |  | $ | 518 |  |  | 658 |  |  | $ | 0.79 |
Effect of Dilutive Securities: |  |  |  |  |  |
Assumed conversion as of the beginning of the period of preferred shares outstanding during the period: |  |  |  |  |  |
Common shares assumed issued for 5.75% cumulative convertible preferred stock |  | 43 |  |  | 59 |  |  |
Common shares assumed issued for 5.75% cumulative convertible preferred stock (series A) |  | 32 |  |  | 42 |  |  |
Outstanding stock options |  | — |  |  | 1 |  |  |
Diluted EPS |  | $ | 593 |  |  | 760 |  |  | $ | 0.78 |

X
- Details
Name: | us-gaap_EarningsPerShareBasicAndDilutedOtherDisclosuresAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) in the future that were not included in the computation of diluted EPS because to do so would increase EPS amounts or decrease loss per share amounts for the period presented, by antidilutive securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
Name: | us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
Name: | us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration