Earnings Per Share and Dividends (Calculations of Basic and Diluted EPS) (Details 1) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Nov. 30, 2016	Nov. 30, 2015
Numerator:
Net (loss) income attributable to noncontrolling interests, net of tax	$ (1,326)	$ 30
Net income attributable to Jabil Circuit, Inc.	$ 88,027	$ 131,885
Denominator for basic and diluted earnings per share:
Denominator for basic earnings per share	185,292	190,355
Dilutive common shares issuable under the employee stock purchase plan and upon exercise of stock options and stock appreciation rights	178	155
Dilutive unvested restricted stock awards	2,386	2,733
Denominator for diluted earnings per share	187,856	193,243
Basic:
Net income [per share]	$ 0.48	$ 0.69
Diluted:
Net income [per share]	$ 0.47	$ 0.68