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PDMCX JOINT VENTURE (Details) - USD ($)
$ in Millions
1 Months Ended 12 Months Ended
Jan. 31, 2018
Oct. 31, 2020
Oct. 31, 2019
Oct. 31, 2018
PDMCX [Member]        
Variable Interest Entity [Abstract]        
Gain (loss) on consolidation $ 0.0      
Total committed investment   $ 160.0    
Term from inception after which interest holder may put their interest in the VIE   2 years    
Period before put or purchase option can be exercised   6 months    
Operating (loss)   $ (4.7) $ (4.9) $ (0.7)
PDMCX [Member] | Minimum [Member]        
Variable Interest Entity [Abstract]        
Ownership percentage   20.00%    
PDMCX [Member] | Maximum [Member]        
Variable Interest Entity [Abstract]        
Number of business days for obtaining required approvals and clearance for exiting party   3 days    
PDMCX [Member] | Local Financing [Member]        
Variable Interest Entity [Abstract]        
Local financing   $ 50.0    
PDMCX [Member] | Local Financing [Member] | Assets Pledged as Collateral [Member]        
Variable Interest Entity [Abstract]        
Collateral amount   $ 94.5    
Photronics Interest [Member]        
Variable Interest Entity [Abstract]        
Ownership percentage   50.01%    
Financial or other support, amount   $ 65.0    
Maximum exposure to loss   54.8    
DNP [Member]        
Variable Interest Entity [Abstract]        
Ownership percentage 49.99%      
Financial or other support, amount   $ 65.0