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Dividends (Tables) | 12 Months Ended
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Dec. 31, 2011
Dividends [Abstract] |
Dividends Paid In Total And Per Share |
|  | 2011 |  |  | 2010 |  |  | 2009 |
|  | (Amounts in thousands, except per share data) |
Total paid |  | $ | 132,142 |  |  | $ | 129,863 |  |  | $ | 127,617 |
Per share |  | $ | 2.41 |  |  | $ | 2.37 |  |  | $ | 2.33 |

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