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v3.19.2

Debt and Lines of Credit (Details) |  | 3 Months Ended | 9 Months Ended |
--- | --- | --- | --- | ---
Jun. 29, 2018 USD ($) installment | May 31, 2019 USD ($) | May 31, 2018 USD ($) | May 31, 2019 USD ($) | May 31, 2018 USD ($) | Aug. 31, 2018 USD ($)
Interest Revenue (Expense), Net [Abstract] |  |  |  |  |  |
Interest expense |  | $ 9,100,000 | $ 8,900,000 | $ 27,400,000 | $ 26,300,000 |
Interest income |  | (800,000) | (500,000) | (1,800,000) | (1,800,000) |
Interest expense, net |  | 8,300,000 | $ 8,400,000 | 25,600,000 | $ 24,500,000 |
Lines of Credit |  |  |  |  |  |
Line of Credit Facility [Abstract] |  |  |  |  |  |
Executed revolving credit facility | $ 800,000,000.0 |  |  |  |  |
Minimum interest coverage ratio | 2.50 |  |  |  |  |
Maximum leverage ratio | 3.50 |  |  |  |  |
Outstanding letters of credit |  | 9,500,000 |  | 9,500,000 |  |
Lines of Credit | Minimum |  |  |  |  |  |
Line of Credit Facility [Abstract] |  |  |  |  |  |
Facility fee (percent) | 0.125% |  |  |  |  |
Lines of Credit | Maximum |  |  |  |  |  |
Line of Credit Facility [Abstract] |  |  |  |  |  |
Facility fee (percent) | 0.25% |  |  |  |  |
Lines of Credit | New Revolving Credit Facility |  |  |  |  |  |
Line of Credit Facility [Abstract] |  |  |  |  |  |
Executed revolving credit facility | $ 400,000,000.0 |  |  |  |  |
Revolving credit facility term | 5 years |  |  |  |  |
Borrowings outstanding |  | 0 |  | 0 |  |
Lines of Credit | Unsecured Delayed Draw Term Loan |  |  |  |  |  |
Line of Credit Facility [Abstract] |  |  |  |  |  |
Executed revolving credit facility | $ 400,000,000.0 |  |  |  |  |
Number of separate installments allowed during borrowing period | installment | 4 |  |  |  |  |
Lines of Credit | Previous Credit Facility |  |  |  |  |  |
Line of Credit Facility [Abstract] |  |  |  |  |  |
Borrowings outstanding |  |  |  |  |  | $ 0
Lines of Credit | Revolving Credit Facility Maturing August 27, 2019 |  |  |  |  |  |
Line of Credit Facility [Abstract] |  |  |  |  |  |
Additional borrowing capacity under revolving credit facility |  | 794,700,000 |  | 794,700,000 |  |
Letters of Credit | Revolving Credit Facility Maturing August 27, 2019 |  |  |  |  |  |
Line of Credit Facility [Abstract] |  |  |  |  |  |
Outstanding letters of credit |  | 5,300,000 |  | 5,300,000 |  |
Senior unsecured public notes | Senior Unsecured Notes Maturing December 2019 |  |  |  |  |  |
Debt Instruments [Abstract] |  |  |  |  |  |
Debt outstanding |  | $ 350,000,000.0 |  | $ 350,000,000.0 |  |
Interest rate (percent) |  | 6.00% |  | 6.00% |  |
Amount to be refinanced |  |  |  | $ 341,100,000 |  |
Industrial revenue bond | Industrial Revenue Bond Maturing in 2021 |  |  |  |  |  |
Debt Instruments [Abstract] |  |  |  |  |  |
Debt outstanding |  | $ 4,000,000.0 |  | 4,000,000.0 |  |
Bank loans | 2016 Fixed-rate Bank Loans |  |  |  |  |  |
Debt Instruments [Abstract] |  |  |  |  |  |
Debt outstanding |  | $ 2,800,000 |  | $ 2,800,000 |  |
Eurocurrency Rate | Lines of Credit | New Revolving Credit Facility | Minimum |  |  |  |  |  |
Line of Credit Facility [Abstract] |  |  |  |  |  |
Applicable margins based on company's leverage ratio, percentage | 1.00% |  |  |  |  |
Eurocurrency Rate | Lines of Credit | New Revolving Credit Facility | Maximum |  |  |  |  |  |
Line of Credit Facility [Abstract] |  |  |  |  |  |
Applicable margins based on company's leverage ratio, percentage | 1.375% |  |  |  |  |
Eurocurrency Rate | Lines of Credit | Unsecured Delayed Draw Term Loan | Minimum |  |  |  |  |  |
Line of Credit Facility [Abstract] |  |  |  |  |  |
Applicable margins based on company's leverage ratio, percentage | 0.875% |  |  |  |  |
Eurocurrency Rate | Lines of Credit | Unsecured Delayed Draw Term Loan | Maximum |  |  |  |  |  |
Line of Credit Facility [Abstract] |  |  |  |  |  |
Applicable margins based on company's leverage ratio, percentage | 1.25% |  |  |  |  |
Base rate | Lines of Credit | New Revolving Credit Facility | Minimum |  |  |  |  |  |
Line of Credit Facility [Abstract] |  |  |  |  |  |
Applicable margins based on company's leverage ratio, percentage | 0.00% |  |  |  |  |
Base rate | Lines of Credit | New Revolving Credit Facility | Maximum |  |  |  |  |  |
Line of Credit Facility [Abstract] |  |  |  |  |  |
Applicable margins based on company's leverage ratio, percentage | 0.375% |  |  |  |  |
Base rate | Lines of Credit | Unsecured Delayed Draw Term Loan | Minimum |  |  |  |  |  |
Line of Credit Facility [Abstract] |  |  |  |  |  |
Applicable margins based on company's leverage ratio, percentage | 0.00% |  |  |  |  |
Base rate | Lines of Credit | Unsecured Delayed Draw Term Loan | Maximum |  |  |  |  |  |
Line of Credit Facility [Abstract] |  |  |  |  |  |
Applicable margins based on company's leverage ratio, percentage | 0.25% |  |  |  |  |
Year one | Lines of Credit | Unsecured Delayed Draw Term Loan |  |  |  |  |  |
Line of Credit Facility [Abstract] |  |  |  |  |  |
Quarterly payment (percent) | 2.50% |  |  |  |  |
Year two | Lines of Credit | Unsecured Delayed Draw Term Loan |  |  |  |  |  |
Line of Credit Facility [Abstract] |  |  |  |  |  |
Quarterly payment (percent) | 2.50% |  |  |  |  |
Year three | Lines of Credit | Unsecured Delayed Draw Term Loan |  |  |  |  |  |
Line of Credit Facility [Abstract] |  |  |  |  |  |
Quarterly payment (percent) | 5.00% |  |  |  |  |
Year four | Lines of Credit | Unsecured Delayed Draw Term Loan |  |  |  |  |  |
Line of Credit Facility [Abstract] |  |  |  |  |  |
Quarterly payment (percent) | 5.00% |  |  |  |  |
Year five and after | Lines of Credit | Unsecured Delayed Draw Term Loan |  |  |  |  |  |
Line of Credit Facility [Abstract] |  |  |  |  |  |
Quarterly payment (percent) | 7.50% |  |  |  |  |

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