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Financings and Capitalization (Capitalization) (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Financings and Capitalization [Abstract]
Common stock, shares authorized	350.0	350.0
Par value of Common Stock	$ 0.01
Shares of Preferred Stock authorized	10
Par value of Preferred Stock	$ 0.01

- Definition

Face amount or stated value per share of nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer); generally not indicative of the fair market value per share.

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