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Stock-Based Compensation (Performance-Contingent Return on Invested Capital Shares) - Additional Information (Detail) - shares |  | 9 Months Ended
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May 23, 2019 | Oct. 05, 2019
Return On Invested Capital |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Percentage of payout, ROIC above WACC |  | 1.75%
Shares, Forfeited | 112,840 |
Return On Invested Capital | Range One |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Percentage of payout, ROIC above WACC |  | 1.75%
Return On Invested Capital | Range Two |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Percentage of payout, ROIC above WACC |  | 3.75%
Return On Invested Capital | Range Three |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Percentage of payout, ROIC above WACC |  | 4.75%
Maximum |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Return on investment target over the three fiscal years immediately preceding the vesting date |  | 4.75%
Maximum | 2019 Award |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Percentage of shares being expensed |  | 100.00%
Weighted Average Cost of Capital | Range One |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Percentage of payout, ROIC above WACC |  | 50.00%
Weighted Average Cost of Capital | Range Two |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Percentage of payout, ROIC above WACC |  | 100.00%
Weighted Average Cost of Capital | Range Three |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Percentage of payout, ROIC above WACC |  | 125.00%
Weighted Average Cost of Capital | Return On Invested Capital |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Percentage of payout, ROIC above WACC |  | 0.00%
Minimum |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Return on investment target over the three fiscal years immediately preceding the vesting date |  | 1.75%
Performance Contingent Return On Invested Capital Shares |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Vesting period |  | 3 years
Performance Contingent Return On Invested Capital Shares | 2017 Award |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Percentage of actual ROI attainment |  | 75.00%
Performance Contingent Return On Invested Capital Shares | Maximum |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Percentage of shares that can be earned |  | 125.00%
Performance Contingent Return On Invested Capital Shares | Minimum |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Percentage of shares that can be earned |  | 0.00%

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- Definition Return On Investment Share Based Compensation Arrangement By Share Based Payment Award Performance Condition target Percentage in excess of weighted average cost of capital. + References No definition available. + Details
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- Definition Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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- Definition The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv)(3) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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