v3.20.4
Reorganization Items (Details) - USD ($)
$ in Millions
3 Months Ended
Oct. 31, 2020
Nov. 02, 2019
Text Block [Abstract]    
Debtor Reorganization Items, Non Cash Termination of Lease Liabilities $ 196.1  
Debtor Reorganization Items, Legal and Advisory Professional Fees (17.2)  
Debtor Reorganization Items, Write off of deferred financing fees (1.9)  
Debtor Reorganization Items, Other Expense (Income) 0.4  
Reorganization Items $ 177.4 $ 0.0