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Preferred Stock (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Preferred Stock [Abstract]
Preferred stock, authorized	2.0	2.0
Preferred stock, par value	$ 1	$ 1

- 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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