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PDMCX JOINT VENTURE, VIE (Details) - USD ($)
$ in Millions
1 Months Ended 12 Months Ended
Jan. 31, 2018
Oct. 31, 2021
Oct. 31, 2020
Oct. 31, 2019
Photronics and DNP [Member]        
Variable Interest Entity [Abstract]        
Financial or other support, amount   $ 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    
Number of business days for obtaining required approvals and clearance for exiting party   3 days    
Operating income (loss)   $ 6.4 $ (4.7) $ (4.9)
Photronics and DNP [Member] | Minimum [Member]        
Variable Interest Entity [Abstract]        
Ownership percentage   20.00%    
PDMCX [Member]        
Variable Interest Entity [Abstract]        
Collateral amount   $ 90.1    
Photronics Interest [Member]        
Variable Interest Entity [Abstract]        
Ownership percentage   50.01%    
Gain (loss) on consolidation $ 0.0      
Maximum exposure to loss   $ 64.0    
DNP [Member]        
Variable Interest Entity [Abstract]        
Ownership percentage 49.99%