Stock-Based Compensation	9 Months Ended
Stock-Based Compensation	May 31, 2017
Stock-Based Compensation [Abstract]
Stock-Based Compensation	4. Stock-Based Compensation The Company recognizes stock-based compensation expense, reduced for estimated forfeitures, on a straight-line basis over the requisite service period of the award, which is generally the vesting period for outstanding stock awards. The Company recorded $18.4 million and $33.4 million of stock-based compensation expense gross of tax effects, which is included in selling, general and administrative expenses within the Condensed Consolidated Statements of Operations for the three months and nine months ended May 31, 2017, respectively. During the first quarter of fiscal year 2017, the Company recorded a $21.0 million reversal to stock-based compensation expense due to decreased expectations for the vesting of certain performance-based restricted stock awards. The Company recorded tax benefits related to the stock-based compensation expense of $0.3 million and $0.7 million, which is included in income tax expense within the Condensed Consolidated Statements of Operations for the three months and nine months ended May 31, 2017, respectively. The Company recorded $13.4 million and $58.5 million of stock-based compensation expense gross of tax effects, which is included in selling, general and administrative expenses within the Condensed Consolidated Statements of Operations for the three months and nine months ended May 31, 2016, respectively. The Company recorded tax benefits related to the stock-based compensation expense of $0.1 million and $0.8 million, which is included in income tax expense within the Condensed Consolidated Statements of Operations for the three months and nine months ended May 31, 2016, respectively. Certain key employees have been granted time-based, performance-based and market-based restricted stock awards. The time-based restricted awards granted generally vest on a graded vesting schedule over three years. The performance-based restricted awards generally vest on a cliff vesting schedule over three to five years and provide a range of vesting possibilities of up to a maximum of 100% or 150%, depending on the specified performance condition and the level of achievement obtained. The market-based restricted awards generally vest on a cliff vesting schedule over three years and provide a range of vesting possibilities of up to a maximum of 200%. The market-based awards have a vesting condition that is tied to the Company’s stock performance in relation to the Standard and Poor’s (S&P) Super Composite Technology Hardware and Equipment Index. The market conditions are considered in the grant date fair value using a Monte Carlo valuation model, which utilizes multiple input variables to determine the probability of the Company achieving the specified market conditions. During the nine months ended May 31, 2017 and 2016, the Company awarded approximately 1.8 million and 2.6 million time-based restricted stock units, respectively, 0.6 million and 1.3 million performance-based restricted stock units, respectively and 0.4 million and 0.4 million market-based stock units, respectively. At May 31, 2017, there was $58.5 million of total unrecognized stock-based compensation expense related to restricted stock awards. This expense is expected to be recognized over a weighted-average period of 1.5 years.

The entire disclosure for compensation-related costs for equity-based compensation, which may include disclosure of policies, compensation plan details, allocation of equity compensation, incentive distributions, equity-based arrangements to obtain goods and services, deferred compensation arrangements, employee stock ownership plan details and employee stock purchase plan details.