XML 74 R54.htm IDEA: XBRL DOCUMENT v3.20.2
Litigation (Details)
claim in Thousands, $ in Millions
3 Months Ended 12 Months Ended
Nov. 12, 2020
USD ($)
Oct. 31, 2020
USD ($)
claim
Jul. 31, 2020
USD ($)
Loss Contingencies [Line Items]      
Number of pending claims | claim   125  
Arbitration fees   $ 10 $ 14
Estimate of possible loss   $ 400  
Subsequent Event      
Loss Contingencies [Line Items]      
Pending litigation settlement $ 40