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FAIR VALUE MEASUREMENTS
 3 Months Ended
Feb. 01, 2025
Fair Value Disclosures [Abstract]  
FAIR VALUE MEASUREMENTS FAIR VALUE MEASUREMENTS
    As of the dates indicated, the following tables summarize the assets and liabilities that are recorded at fair value on a recurring basis (in thousands):
 February 1, 2025
 Level 1Level 2Level 3Total
Assets:    
Money market funds$581,415 $— $— $581,415 
Bond mutual fund114,061 — — 114,061 
Time deposits92,937 — — 92,937 
Deferred compensation plan assets17,659 — — 17,659 
U.S. government obligations— 329,496 — 329,496 
Corporate debt securities— 106,117 — 106,117 
Foreign currency forward contracts— 2,080 — 2,080 
Interest rate swaps— 13,978 — 13,978 
Total assets measured at fair value$806,072 $451,671 $— $1,257,743 
Liabilities:
Foreign currency forward contracts$— $14,325 $— $14,325 
Total liabilities measured at fair value$— $14,325 $— $14,325 

November 2, 2024
Level 1Level 2Level 3Total
Assets:
Money market funds$636,097 $— $— $636,097 
Bond mutual fund112,703 — — 112,703 
Time deposits92,804 — — 92,804 
Deferred compensation plan assets16,519 — — 16,519 
U.S. government obligations— 286,181 — 286,181 
Corporate debt securities— 111,143 — 111,143 
Foreign currency forward contracts— 2,149 — 2,149 
Interest rate swaps— 11,777 — 11,777 
Total assets measured at fair value$858,123 $411,250 $— $1,269,373 
Liabilities:
Foreign currency forward contracts$— $9,155 $— $9,155 
Total liabilities measured at fair value$— $9,155 $— $9,155 
As of the dates indicated, the assets and liabilities above are presented on Ciena’s Condensed Consolidated Balance Sheets as follows (in thousands):
 February 1, 2025
 Level 1Level 2Level 3Total
Assets:    
Cash equivalents$781,671 $— $— $781,671 
Short-term investments6,742 330,578 — 337,320 
Prepaid expenses and other— 2,080 — 2,080 
Long-term investments— 105,035 — 105,035 
Other long-term assets17,659 13,978 — 31,637 
Total assets measured at fair value$806,072 $451,671 $— $1,257,743 
Liabilities:
Accrued liabilities and other short-term obligations$— $14,325 $— $14,325 
Total liabilities measured at fair value$— $14,325 $— $14,325 

 November 2, 2024
 Level 1Level 2Level 3Total
Assets:    
Cash equivalents$832,239 $9,426 $— $841,665 
Short-term investments9,365 306,978 — 316,343 
Prepaid expenses and other— 2,149 — 2,149 
Long-term investments— 80,920 — 80,920 
Other long-term assets16,519 11,777 — 28,296 
Total assets measured at fair value$858,123 $411,250 $— $1,269,373 
Liabilities:
Accrued liabilities and other short-term obligations$— $9,155 $— $9,155 
Total liabilities measured at fair value$— $9,155 $— $9,155 

Ciena did not have any transfers between Level 1 and Level 2 fair value measurements during the periods presented.