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Share-Based Payments - Weighted Average for Key Assumptions Used in Determining Fair Value of Options Granted and Related Share-Based Compensation Expense (Detail)
8 Months Ended
May 09, 2020
May 04, 2019
Share-Based Payments [Abstract]    
Expected price volatility 22.00% 21.00%
Risk-free interest rates 1.40% 3.00%
Weighted average expected lives (in years) 5 years 6 months 5 years 7 months 6 days
Forfeiture rate 10.00% 10.00%
Dividend yield 0.00% 0.00%