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Stockholders' Equity - Common Stock Activity (Detail)	1 Months Ended	3 Months Ended
Stockholders' Equity - Common Stock Activity (Detail)	Feb. 28, 2013	Mar. 31, 2013
Actual number of shares of common stock outstanding
Beginning of period		362,519,883
Shares of common stock converted from Mandatory Convertible Subordinated Bonds due February 2013	10,416,700	10,416,700
Shares of common stock issued through compensation plans		2,010,943
End of period		374,947,526

Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.

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- Definition

Number of shares (or other type of equity) issued during the period as a result of any equity-based compensation plan other than an employee stock ownership plan (ESOP), net of any shares forfeited. Shares issued could result from the issuance of restricted stock, the exercise of stock options, stock issued under employee stock purchase plans, and/or other employee benefit plans.

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