Earnings (Loss) Per Share Attributable To CMC (Tables)

12 Months Ended

Aug. 31, 2012

Earnings Per Share [Abstract]

Reconciliation of the denominators of the earnings per share calculations

The reconciliation of the denominators of the earnings per share calculations is as follows:

	2012	2011	2010
Shares outstanding for basic earnings (loss) per share	115,861,986	114,995,616	113,524,836
Effect of dilutive securities:
Stock-based incentive/purchase plans	921,174	1,115,507	—
Shares outstanding for diluted earnings (loss) per share	116,783,160	116,111,123	113,524,836