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Stockholders' Equity - Schedule of Changes in Accumulated Other Comprehensive Income (Loss) Income (Details) - USD ($)
$ in Millions
 9 Months Ended 12 Months Ended
Jul. 31, 2021
Oct. 31, 2020
AOCI Attributable to Parent, Net of Tax [Roll Forward]    
Beginning balance $ 3,824.8 $ 3,628.6
Gross change in value 115.8 (33.0)
Tax effect (3.6) 8.1
Ending balance 6,785.4 3,824.8
Foreign Currency Translation Adjustment    
AOCI Attributable to Parent, Net of Tax [Roll Forward]    
Beginning balance (402.3) (403.2)
Gross change in value 101.6 0.9
Tax effect (0.2) 0.0
Ending balance (300.9) (402.3)
Minimum Pension Liability    
AOCI Attributable to Parent, Net of Tax [Roll Forward]    
Beginning balance (56.7) (43.9)
Gross change in value 0.0 (16.8)
Tax effect 0.0 4.0
Ending balance (56.7) (56.7)
Derivative Instruments    
AOCI Attributable to Parent, Net of Tax [Roll Forward]    
Beginning balance (13.0) 0.0
Gross change in value 14.2 (17.1)
Tax effect (3.4) 4.1
Ending balance (2.2) (13.0)
Accumulated Other Comprehensive Income (Loss)    
AOCI Attributable to Parent, Net of Tax [Roll Forward]    
Beginning balance (472.0) (447.1)
Ending balance $ (359.8) $ (472.0)