CONSOLIDATED BALANCE SHEET (Parenthetical)	Sep. 30, 2011 CHF	Dec. 31, 2010 CHF
Consolidated Balance Sheet (Parenthetical) [Abstract]
Registered share par value in CHF	3.00	3.00
Registered shares authorized	188,374,725	192,156,579
Registered shares conditionally authorized	60,144,393	60,675,249
Registered shares issued	125,166,768	128,948,622
Registered shares outstanding	116,924,823	124,635,912
Treasury shares outstanding	8,241,945	4,312,710

Consolidated Balance Sheet (Parenthetical) [Abstract]

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The maximum number of common shares conditionally permitted to be issued by an entity's charter and bylaws.

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Face amount or stated value of common stock per share; generally not indicative of the fair market value per share.

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The maximum number of common shares permitted to be issued by an entity's charter and bylaws.

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Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury.

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Total number of shares of common stock held by shareholders. May be all or portion of the number of common shares authorized. These shares represent the ownership interest of the common shareholders. Shares outstanding equals shares issued minus shares held in treasury and other adjustments, if any.

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Number of common and preferred shares that were previously issued and that were repurchased by the issuing entity and held in treasury on the financial statement date. This stock has no voting rights and receives no dividends.

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