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Debt - Additional Information (Details) - USD ($)
$ in Millions
6 Months Ended
Jan. 31, 2020
Jan. 03, 2020
Oct. 04, 2019
Jan. 03, 2020
Dec. 28, 2018
Debt Instrument [Line Items]          
Repayment of debt       $ 707 $ 75
Variable interest rate U.S. Term Loan B-4 maturing 2023          
Debt Instrument [Line Items]          
Repayment of debt   $ 325 $ 250    
Subsequent Event | Variable interest rate U.S. Term Loan B-4 maturing 2023          
Debt Instrument [Line Items]          
Repayment of debt $ 150