Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies - Additional Information (Details)

v3.21.2
Summary of Significant Accounting Policies - Additional Information (Details)
 12 Months Ended
Oct. 02, 2021
USD ($)
Segment
Oct. 03, 2020
USD ($)
Sep. 28, 2019
USD ($)
Sep. 29, 2019
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]        
Number of reportable segment | Segment 1      
Stock split 156,500-for-1      
Vendor Rebate Receivables $ 20,200,000 $ 15,900,000    
Impairment charges related to goodwill or other indefinite lived intangible assets 0 0 $ 0  
Impairment of long-lived assets $ 0      
Leases initial term 5 years      
Incremental liability related to conversion of prior loyalty program awards. $ 1,600,000      
Advertising Expense 25,400,000 19,400,000 18,000,000.0  
Fair value, assets, level 1 to level 2 transfers, amount 0 0 0  
Fair value, assets, level 2 to level 1 transfers, amount 0 0 0  
Fair value, liabilities, level 1 to level 2 transfers, amount 0 0 0  
Fair value, liabilities, level 2 to level 1 transfers, amount $ 0 0 $ 0  
Lease existence of option to extend [true false] true      
Lease existence of option to terminate [true false] true      
Lease option to extend one additional five-year      
Leases option to terminate Some of our leases may include the option to terminate in less than five years.      
Credit payment terms for commercial customers 60 days      
Deferred revenue related to loyalty program $ 5,900,000      
Timing extended for increase in number of points earned on qualifying purchases 12 months      
ASU 2016-02        
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]        
Change in accounting principle, accounting standards update, adopted [true false]       true
Change in accounting principle, accounting standards update, adoption date       Sep. 29, 2019
Interest Rate Cap Agreement        
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]        
Debt instrument, maturity date 2021-03      
Cloud Computing Arrangements | Prepaid Expenses and Other Current Assets [Member]        
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]        
Capitalized expenditures on cloud computing arrangement $ 5,200,000      
Cloud Computing Arrangements | Other Assets [Member]        
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]        
Capitalized expenditures on cloud computing arrangement 23,100,000      
Level 2 | Term Loan due in 2028        
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]        
Fair value of term loan 802,900,000 796,500,000    
Senior Unsecured Notes        
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]        
Fair value of notes $ 0 $ 390,000,000.0