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Preferred And Common Stock (Details) (USD $) In Millions, except Share data, unless otherwise specified | 0 Months Ended |
--- | --- | ---
Jan. 25, 2011 | Jan. 24, 2011 | Sep. 30, 2011
Preferred And Common Stock |  |  |
Common stock contributed to pension plans | 36,518,563 | 36,518,563 |
Common stock contributed to pension plan, price per share |  | $ 16.43 |
Common stock contributed to pension plan, aggregate price |  | $ 600 |
Common shares authorized |  |  | 1,800,000,000
Common shares issued |  |  | 1,177,906,557
Common share outstanding |  |  | 1,064,276,127
Funded status of U.S. pension plan |  | 80.00% |

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