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ACQUISITIONS PURCHASE PRICE ALLOCATIONS (Details) - USD ($)
$ in Millions
 12 Months Ended
Oct. 17, 2025
Oct. 15, 2025
Nov. 03, 2023
Oct. 31, 2025
Oct. 31, 2024
Business Combination [Line Items]          
Goodwill arising from acquisitions       $ 1,001 $ 738
Business Combination, Recognized Asset Acquired and Liability Assumed      
The following table summarizes the preliminary allocation of the purchase price to the estimated fair values of the assets acquired and liabilities assumed on the closing date:
October 15, 2025
(in millions)
Cash and cash equivalents$127 
Inventory40 
Accounts receivable71 
Assets held for sale433 
Other current assets28 
Property, plant and equipment28 
Operating lease right-of-use assets11 
Goodwill698 
Other intangible assets528 
Other assets8 
Total assets acquired1,972 
Accounts payable(13)
Employee compensation and benefits(40)
Deferred revenue(44)
Operating lease liabilities(3)
Liabilities held for sale(34)
Other accrued liabilities(70)
Long-term deferred revenue(14)
Long-term operating lease liabilities(9)
Other long-term liabilities(181)
Net assets acquired$1,564 
The following table summarizes the preliminary allocation of the purchase price to the estimated fair values of the assets acquired and liabilities assumed on the closing date:
October 17, 2025
(in millions)
Accounts receivable$15 
Other current assets1 
Property, plant and equipment
1 
Operating lease right-of-use assets2 
Goodwill298 
Other intangible assets275 
Total assets acquired592 
Deferred revenue(8)
Operating lease liabilities(1)
Long-term deferred revenue(1)
Long-term operating lease liabilities(1)
Net assets acquired$581 
The following table summarizes the allocation of the purchase price to the estimated fair values of the assets acquired and liabilities assumed on the closing date:
November 3, 2023
(in millions)
Cash and cash equivalents$35 
Short-term investments12
Accounts receivable28
Other current assets18
Property, plant and equipment4
Operating lease right-of-use assets8
Goodwill603
Other intangible assets494
Other assets3
Total assets acquired1,205 
Accounts payable(8)
Employee compensation and benefits(23)
Deferred revenue(14)
Income and other taxes payable(11)
Operating lease liabilities(3)
Other accrued liabilities(18)
Debt(24)
Retirement and post-retirement benefits(7)
Long-term operating lease liabilities(5)
Other long-term liabilities(115)
Net assets acquired$977 
  
Spirent plc          
Business Combination [Line Items]          
Cash and cash equivalents   $ 127      
Inventory   40      
Accounts receivable   71      
Assets held for sale   433      
Other current assets   28      
Property, plant and equipment   28      
Operating lease right-of-use assets   11      
Goodwill arising from acquisitions   698      
Other intangible assets   528      
Other assets   8      
Total assets acquired   1,972      
Accounts payable   (13)      
Employee compensation and benefits   (40)      
Deferred revenue   (44)      
Operating lease liabilities   (3)      
Liabilities held for sale   (34)      
Other accrued liabilities   (70)      
Long-term deferred revenue   (14)      
Long-term operating lease liabilities   (9)      
Other long-term liabilities   (181)      
Net assets acquired   $ 1,564      
Synopsys' Optical Solutions Group business          
Business Combination [Line Items]          
Accounts receivable $ 15        
Other current assets 1        
Property, plant and equipment 1        
Operating lease right-of-use assets 2        
Goodwill arising from acquisitions 298        
Other intangible assets 275        
Total assets acquired 592        
Deferred revenue (8)        
Operating lease liabilities (1)        
Long-term deferred revenue 1        
Long-term operating lease liabilities (1)        
Net assets acquired $ 581        
ESI Group SA          
Business Combination [Line Items]          
Cash and cash equivalents     $ 35    
Short-term investments     12    
Accounts receivable     28    
Other current assets     18    
Property, plant and equipment     4    
Operating lease right-of-use assets     8    
Goodwill arising from acquisitions     603    
Other intangible assets     494    
Other assets     3    
Total assets acquired     1,205    
Accounts payable     (8)    
Employee compensation and benefits     23    
Deferred revenue     (14)    
Income and other taxes payable     (11)    
Operating lease liabilities     3    
Other accrued liabilities     (18)    
Debt     (24)    
Retirement and post-retirement benefits     7    
Long-term operating lease liabilities     (5)    
Other long-term liabilities     (115)    
Net assets acquired     $ 977