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Stock-Based Compensation and Shares Repurchases - Narrative (Details) - USD ($) | 3 Months Ended | 9 Months Ended | 11 Months Ended |  |
--- | --- | --- | --- | --- | ---
Nov. 30, 2017 | May 31, 2018 | May 31, 2017 | May 31, 2018 | Jun. 28, 2018 | Jul. 31, 2017
Schedule of Weighted Average Assumptions for Fair Values of Stock Options[Line Items] |  |  |  |  |  |
Stock-based compensation recognized for modification | $ 24,900,000 |  |  |  |  |
2017 Share Repurchase Program |  |  |  |  |  |
Schedule of Weighted Average Assumptions for Fair Values of Stock Options[Line Items] |  |  |  |  |  |
Share repurchase program, amount authorized (up to) |  |  |  |  |  | $ 450,000,000
Shares repurchased |  |  |  | 11,500,000 |  |
Shares repurchased, value |  | $ 316,200,000 |  | $ 316,200,000 |  |
Share repurchase program, remaining authorized repurchase amount |  | $ 133,800,000 |  | $ 133,800,000 |  |
Time-based restricted stock units |  |  |  |  |  |
Schedule of Weighted Average Assumptions for Fair Values of Stock Options[Line Items] |  |  |  |  |  |
Award vesting period |  | 3 years |  |  |  |
Restricted stock units awarded (in shares) |  | 1,400,000 | 1,800,000 |  |  |
Performance-based restricted stock units |  |  |  |  |  |
Schedule of Weighted Average Assumptions for Fair Values of Stock Options[Line Items] |  |  |  |  |  |
Award vesting period |  | 3 years |  |  |  |
Restricted stock units awarded (in shares) |  | 400,000 | 600,000 |  |  |
Performance-based restricted stock units | Maximum |  |  |  |  |  |
Schedule of Weighted Average Assumptions for Fair Values of Stock Options[Line Items] |  |  |  |  |  |
Award vesting percentage |  | 150.00% |  |  |  |
Market based restricted stock units |  |  |  |  |  |
Schedule of Weighted Average Assumptions for Fair Values of Stock Options[Line Items] |  |  |  |  |  |
Award vesting period |  | 3 years |  |  |  |
Award vesting percentage |  | 200.00% |  |  |  |
Restricted stock units awarded (in shares) |  | 400,000 | 400,000 |  |  |
Restricted stock awards |  |  |  |  |  |
Schedule of Weighted Average Assumptions for Fair Values of Stock Options[Line Items] |  |  |  |  |  |
Awards vested (in shares) | 800,000 |  |  |  |  |
Plan 2011 |  |  |  |  |  |
Schedule of Weighted Average Assumptions for Fair Values of Stock Options[Line Items] |  |  |  |  |  |
Shares available for issuance under share based compensation plan |  | 12,777,424 |  | 12,777,424 |  |
Subsequent Event | 2018 Share Repurchase Program |  |  |  |  |  |
Schedule of Weighted Average Assumptions for Fair Values of Stock Options[Line Items] |  |  |  |  |  |
Share repurchase program, amount authorized (up to) |  |  |  |  | $ 350,000,000 |

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- Definition Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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