v2.4.0.6

Income from Continuing Operations Per Unrestricted Share (Tables) | 3 Months Ended
--- | ---
Mar. 31, 2012
Earnings Per Share [Abstract] |
Schedule of Calculation of Numerator and Denominator in Earnings Per Share [Table Text Block] | A reconciliation of the numerator and denominator used in the calculation of Basic Income from Continuing Operations Per Unrestricted Share and Diluted Income from Continuing Operations Per Unrestricted Share for the three months ended March 31, 2012 and 2011 is as follows:
|  | Three Months Ended
|  | Mar 31, 2012 |  | Mar 31, 2011
(Dollars in Millions) |  |  |  |
Income from Continuing Operations |  | $ | 36.3 |  |  | $ | 45.0 |
Less Income from Continuing Operations Attributed to Restricted Shares |  | 0.2 |  |  | 0.2 |
Income from Continuing Operations Attributed to Unrestricted Shares |  | 36.1 |  |  | 44.8 |
Dilutive Effect on Income of Equity-based Compensation Equivalent Shares |  | — |  |  | — |
Diluted Income from Continuing Operations Attributed to Unrestricted Shares |  | $ | 36.1 |  |  | $ | 44.8 |
(Shares in Thousands) |  |  |  |
Weighted-Average Unrestricted Shares Outstanding |  | 59,865.7 |  |  | 60,677.5 |
Equity-based Compensation Equivalent Shares |  | 130.4 |  |  | 104.4 |
Weighted-Average Unrestricted Shares and Equivalent Shares Outstanding Assuming Dilution |  | 59,996.1 |  |  | 60,781.9 |
(Per Unrestricted Share in Whole Dollars) |  |  |  |
Basic Income from Continuing Operations Per Unrestricted Share |  | $ | 0.61 |  |  | $ | 0.74 |
Diluted Income from Continuing Operations Per Unrestricted Share |  | $ | 0.60 |  |  | $ | 0.73 |

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

X
- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations. + References No definition available. + Details
Name: | us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration