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Financing - Schedule of Debt (Detail) - USD ($)
$ in Thousands
Aug. 31, 2019
Apr. 18, 2019
Aug. 25, 2018
Apr. 18, 2017
Debt Instrument [Line Items]        
Commercial paper $ 1,030,000   $ 1,325,300  
Total debt before discounts and debt issuance costs 5,230,000   5,025,300  
Less: Discounts and debt issuance costs 23,656   19,370  
Long-term debt 5,206,344   5,005,930  
1.625% Senior Notes due April 2019, effective interest rate of 1.77% [Member]        
Debt Instrument [Line Items]        
Senior notes     250,000  
4.000% Senior Notes due November 2020, effective interest rate of 4.43% [Member]        
Debt Instrument [Line Items]        
Senior notes 500,000   500,000  
2.500% Senior Notes due April 2021, effective interest rate of 2.62% [Member]        
Debt Instrument [Line Items]        
Senior notes 250,000   250,000  
3.700% Senior Notes due April 2022, effective interest rate of 3.85% [Member]        
Debt Instrument [Line Items]        
Senior notes 500,000   500,000  
2.875% Senior Notes due January 2023, effective interest rate of 3.21% [Member]        
Debt Instrument [Line Items]        
Senior notes 300,000   300,000  
3.125% Senior Notes due July 2023, effective interest rate of 3.26% [Member]        
Debt Instrument [Line Items]        
Senior notes 500,000   500,000  
3.125% Senior Notes due April 2024, effective interest rate 3.32% [Member]        
Debt Instrument [Line Items]        
Senior notes 300,000 $ 300,000    
3.250% Senior Notes due April 2025, effective interest rate 3.36% [Member]        
Debt Instrument [Line Items]        
Senior notes 400,000   400,000  
3.125% Senior Notes due April 2026, effective interest rate of 3.28% [Member]        
Debt Instrument [Line Items]        
Senior notes 400,000   400,000  
3.750% Senior Notes due June 2027, effective interest rate of 3.83% [Member]        
Debt Instrument [Line Items]        
Senior notes 600,000   $ 600,000 $ 600,000
3.750% Senior Notes due April 2029, effective interest rate of 3.86% [Member]        
Debt Instrument [Line Items]        
Senior notes $ 450,000 $ 450,000