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New Accounting Standards (Details) - USD ($)
$ in Millions
Jul. 28, 2019
Oct. 28, 2018
Jul. 29, 2018
Oct. 29, 2017
ASU 2014-09        
New accounting standards        
Change in Accounting Principle, Accounting Standards Update, Adopted [true false] true      
Change in Accounting Principle, Accounting Standards Update, Transition Option Elected [Fixed List] Modified Retrospective      
ASU 2016-01        
New accounting standards        
Change in Accounting Principle, Accounting Standards Update, Adopted [true false] true      
ASU 2016-18        
New accounting standards        
Change in Accounting Principle, Accounting Standards Update, Adopted [true false] true      
Change in Accounting Principle, Accounting Standards Update, Transition Option Elected [Fixed List] Retrospective      
Restricted cash $ 90.1 $ 103.4 $ 98.0 $ 125.9
ASU 2017-12        
New accounting standards        
Change in Accounting Principle, Accounting Standards Update, Adopted [true false] true      
Change in Accounting Principle, Accounting Standards Update, Early Adoption [true false] true      
ASU 2016-15        
New accounting standards        
Change in Accounting Principle, Accounting Standards Update, Adopted [true false] true      
ASU 2016-16        
New accounting standards        
Change in Accounting Principle, Accounting Standards Update, Adopted [true false] true      
ASU 2017-01        
New accounting standards        
Change in Accounting Principle, Accounting Standards Update, Adopted [true false] true      
ASU 2017-09        
New accounting standards        
Change in Accounting Principle, Accounting Standards Update, Adopted [true false] true      
ASU 2018-13        
New accounting standards        
Change in Accounting Principle, Accounting Standards Update, Adopted [true false] true      
ASU 2018-16        
New accounting standards        
Change in Accounting Principle, Accounting Standards Update, Adopted [true false] true      
ASU 2016-02        
New accounting standards        
Change in Accounting Principle, Accounting Standards Update, Adopted [true false] false      
ASU 2016-13        
New accounting standards        
Change in Accounting Principle, Accounting Standards Update, Adopted [true false] false      
ASU 2018-15        
New accounting standards        
Change in Accounting Principle, Accounting Standards Update, Adopted [true false] false      
ASU 2019-04        
New accounting standards        
Change in Accounting Principle, Accounting Standards Update, Adopted [true false] false