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Debt and Lines of Credit (Details) |  |  | 3 Months Ended |
--- | --- | --- | --- | ---
Nov. 10, 2020 USD ($) | Jun. 29, 2018 USD ($) | Nov. 30, 2020 USD ($) | Nov. 30, 2019 USD ($) | Aug. 31, 2020 USD ($)
Line of Credit Facility [Abstract] |  |  |  |  |
Senior unsecured notes repaid |  |  | $ 395,100,000 | $ 400,000 |
Interest Revenue (Expense), Net [Abstract] |  |  |  |  |
Interest expense |  |  | 5,100,000 | 9,000,000.0 |
Interest income |  |  | (200,000) | (700,000) |
Interest expense, net |  |  | 4,900,000 | $ 8,300,000 |
Unsecured debt | Unsecured Delayed Draw Term Loan |  |  |  |  |
Line of Credit Facility [Abstract] |  |  |  |  |
Aggregate principal amount |  | $ 400,000,000.0 |  |  |
Borrowings outstanding under current Revolving Credit Facility |  |  |  |  | $ 395,000,000.0
Senior unsecured notes repaid |  |  | 395,000,000.0 |  |
Industrial revenue bond | Industrial Revenue Bond Maturing in 2021 |  |  |  |  |
Line of Credit Facility [Abstract] |  |  |  |  |
Debt outstanding |  |  | 4,000,000.0 |  |
Bank loans | 2016 Fixed-rate Bank Loans |  |  |  |  |
Line of Credit Facility [Abstract] |  |  |  |  |
Debt outstanding |  |  | 2,000,000.0 |  |
Credit facility |  |  |  |  |
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 |  |  | 8,300,000 |  |
Credit facility | Minimum |  |  |  |  |
Line of Credit Facility [Abstract] |  |  |  |  |
Facility fee (percent) |  | 0.125% |  |  |
Credit facility | Maximum |  |  |  |  |
Line of Credit Facility [Abstract] |  |  |  |  |
Facility fee (percent) |  | 0.25% |  |  |
Credit facility | New Revolving Credit Facility |  |  |  |  |
Line of Credit Facility [Abstract] |  |  |  |  |
Term of instrument |  | 5 years |  |  |
Executed revolving credit facility |  | $ 400,000,000.0 |  |  |
Borrowings outstanding under current Revolving Credit Facility |  |  | 0 |  | $ 0
Additional borrowing capacity under revolving credit facility |  |  | 395,900,000 |  |
Letters of Credit | New Revolving Credit Facility |  |  |  |  |
Line of Credit Facility [Abstract] |  |  |  |  |
Outstanding letters of credit |  |  | 4,100,000 |  |
Eurocurrency Rate | Credit facility | New Revolving Credit Facility | Minimum |  |  |  |  |
Line of Credit Facility [Abstract] |  |  |  |  |
Applicable margins based on company's leverage ratio, percentage |  | 1.00% |  |  |
Eurocurrency Rate | Credit facility | New Revolving Credit Facility | Maximum |  |  |  |  |
Line of Credit Facility [Abstract] |  |  |  |  |
Applicable margins based on company's leverage ratio, percentage |  | 1.375% |  |  |
Base rate | Credit facility | New Revolving Credit Facility | Minimum |  |  |  |  |
Line of Credit Facility [Abstract] |  |  |  |  |
Applicable margins based on company's leverage ratio, percentage |  | 0.00% |  |  |
Base rate | Credit facility | New Revolving Credit Facility | Maximum |  |  |  |  |
Line of Credit Facility [Abstract] |  |  |  |  |
Applicable margins based on company's leverage ratio, percentage |  | 0.375% |  |  |
ABL | Unsecured debt | 2.150% Senior Unsecured Notes Due December 2030 |  |  |  |  |
Line of Credit Facility [Abstract] |  |  |  |  |
Aggregate principal amount | $ 500,000,000.0 |  |  |  |
Interest rate (percent) | 2.15% |  |  |  |
Deferred issuance costs | $ 4,800,000 |  |  |  |
Term of instrument | 10 years |  |  |  |
Debt outstanding |  |  | $ 493,900,000 |  |

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- Definition Line of Credit Facility, Covenant Terms, Leverage Ratio, Maximum + References No definition available. + Details
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- Definition Percentage points added to the reference rate to compute the variable rate on the debt instrument. + References No definition available. + Details
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- Definition Face (par) amount of debt instrument at time of issuance. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=119993939&loc=d3e28551-108399 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=114775985&loc=d3e28878-108400 + Details
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- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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- Definition Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition Amount, before accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=119993939&loc=d3e28555-108399 + Details
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- Definition Amount of interest revenue (income derived from investments in debt securities and on cash and cash equivalents) net of interest expense (cost of borrowed funds accounted for as interest). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8736-108599 + Details
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- Definition The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(16)) -URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910 + Details
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- Definition The fee, expressed as a percentage of the line of credit facility, for the line of credit facility regardless of whether the facility has been used. + References No definition available. + Details
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- Definition Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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