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Financing - Additional Information (Detail)
$ in Thousands
12 Months Ended
Aug. 28, 2021
USD ($)
Mar. 15, 2021
USD ($)
Nov. 18, 2017
USD ($)
Nov. 17, 2017
USD ($)
Aug. 28, 2021
USD ($)
Aug. 29, 2020
USD ($)
Aug. 31, 2019
USD ($)
Feb. 22, 2021
USD ($)
Aug. 14, 2020
USD ($)
Mar. 30, 2020
USD ($)
Apr. 18, 2019
USD ($)
Debt Instrument [Line Items]                      
Amount available under credit facility $ 2,000,000       $ 2,000,000            
Credit Agreement description less than one year                    
Minimum debt covenant interest coverage ratio to be maintained quarterly         2.5            
Debt covenant interest coverage ratio         6.9            
Remaining borrowing capacity under revolving credit facility $ 1,998,000       $ 1,998,000            
Repayments of Long-term Debt         250,000 $ 500,000 $ 250,000        
Fair value of the Company's debt 5,683,000       5,683,000 6,081,000          
Excess (shortfall) of fair value of debt over (from) carrying value 413,100       413,100 567,500          
Other Letters Of Credit [Member]                      
Debt Instrument [Line Items]                      
Borrowings, outstanding 136,800       $ 136,800            
Third Amended and Restated Credit Agreement [Member]                      
Debt Instrument [Line Items]                      
Amount available under credit facility       $ 1,600,000              
Maximum amount available under credit facility       $ 2,000,000              
Credit facility expiration date       Nov. 18, 2021              
Master Extension Agreement [Member]                      
Debt Instrument [Line Items]                      
Amount available under credit facility     $ 2,000,000                
Maximum amount available under credit facility     $ 2,400,000                
Credit facility expiration date     Nov. 18, 2022                
Extended expiration of credit facility     1 year                
Credit Agreement description         Under the Revolving Credit Agreement, the Company may borrow funds consisting of Eurodollar loans, base rate loans or a combination of both. Interest accrues on Eurodollar loans at a defined Eurodollar rate, defined as LIBOR plus the applicable percentage, as defined in the Revolving Credit Agreement, depending upon the Company’s senior, unsecured, (non-credit enhanced) long-term debt ratings. Interest accrues on base rate loans as defined in the Revolving Credit Agreement.            
Letters of credit, outstanding 1,700       $ 1,700            
Revolving Credit Facility [Member]                      
Debt Instrument [Line Items]                      
Borrowings, outstanding 0       0     $ 0      
Letter of Credit                      
Debt Instrument [Line Items]                      
Maximum amount available under credit facility 25,000       25,000            
Letters of credit, outstanding 23,900       23,900            
1.650% Senior Notes due January 2031, effective interest rate of 2.19%                      
Debt Instrument [Line Items]                      
Senior notes $ 600,000       $ 600,000 $ 600,000     $ 600,000    
Stated interest rate percentage 1.65%       1.65% 1.65%     1.65%    
2.500% Senior Notes due April 2021, effective interest rate of 2.62%                      
Debt Instrument [Line Items]                      
Senior notes           $ 250,000          
Stated interest rate percentage 2.50% 2.50%     2.50% 2.50%          
Repayments of Long-term Debt   $ 250,000                  
3.700% Senior Notes due April 2022, effective interest rate of 3.85%                      
Debt Instrument [Line Items]                      
Senior notes $ 500,000       $ 500,000 $ 500,000          
Stated interest rate percentage 3.70%       3.70% 3.70%          
4.000% Senior Notes due November 2020, effective interest rate of 4.43%                      
Debt Instrument [Line Items]                      
Stated interest rate percentage 4.00%       4.00%            
Repayment of debt         $ 500,000            
3.625% Senior Notes due April 2025, effective interest rate 3.78%                      
Debt Instrument [Line Items]                      
Senior notes $ 500,000       $ 500,000 $ 500,000       $ 500,000  
Stated interest rate percentage 3.625%       3.625% 3.625%       3.625%  
4.000% Senior Notes due April 2030, effective interest rate 4.09%                      
Debt Instrument [Line Items]                      
Senior notes $ 750,000       $ 750,000 $ 750,000       $ 750,000  
Stated interest rate percentage 4.00%       4.00% 4.00%       4.00%  
3.125% Senior Notes due April 2024, effective interest rate 3.32%                      
Debt Instrument [Line Items]                      
Senior notes $ 300,000       $ 300,000 $ 300,000         $ 300,000
Stated interest rate percentage 3.125%       3.125% 3.125%         3.125%
3.750% Senior Notes due April 2029, effective interest rate of 3.86%                      
Debt Instrument [Line Items]                      
Senior notes $ 450,000       $ 450,000 $ 450,000         $ 450,000
Stated interest rate percentage 3.75%       3.75% 3.75%         3.75%
1.625% Senior Notes due April 2019, effective interest rate of 1.77% [Member]                      
Debt Instrument [Line Items]                      
Stated interest rate percentage 1.625%       1.625%            
Repayment of debt             $ 250,000