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FAIR VALUE MEASUREMENTS
 9 Months Ended
Jul. 27, 2024
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):
 July 27, 2024
 Level 1Level 2Level 3Total
Assets:    
Money market funds$427,818 $— $— $427,818 
Bond mutual fund160,513 — — 160,513 
Time deposits96,134 — — 96,134 
Deferred compensation plan assets15,590 — — 15,590 
U.S. government obligations— 261,010 — 261,010 
Corporate debt securities— 57,836 — 57,836 
Foreign currency forward contracts— 1,232 — 1,232 
Interest rate swaps— 12,316 — 12,316 
Total assets measured at fair value$700,055 $332,394 $— $1,032,449 
Liabilities:
Foreign currency forward contracts$— $7,271 $— $7,271 
Total liabilities measured at fair value$— $7,271 $— $7,271 

October 28, 2023
Level 1Level 2Level 3Total
Assets:
Money market funds$661,101 $— $— $661,101 
Bond mutual fund104,171 — — 104,171 
Time deposits138,829 — — 138,829 
Deferred compensation plan assets11,456 — — 11,456 
U.S. government obligations— 169,909 — 169,909 
Corporate debt securities— 59,569 — 59,569 
Foreign currency forward contracts— 1,119 — 1,119 
Interest rate swaps— 24,953 — 24,953 
Total assets measured at fair value$915,557 $255,550 $— $1,171,107 
Liabilities:
Foreign currency forward contracts$— $14,509 $— $14,509 
Total liabilities measured at fair value$— $14,509 $— $14,509 

As of the dates indicated, the assets and liabilities above are presented on Ciena’s Condensed Consolidated Balance Sheets as follows (in thousands):
 July 27, 2024
 Level 1Level 2Level 3Total
Assets:    
Cash equivalents$669,655 $4,013 $— $673,668 
Short-term investments14,810 203,000 — 217,810 
Prepaid expenses and other— 1,232 — 1,232 
Long-term investments— 111,833 — 111,833 
Other long-term assets15,590 12,316 — 27,906 
Total assets measured at fair value$700,055 $332,394 $— $1,032,449 
Liabilities:
Accrued liabilities and other short-term obligations$— $7,271 $— $7,271 
Total liabilities measured at fair value$— $7,271 $— $7,271 

 October 28, 2023
 Level 1Level 2Level 3Total
Assets:    
Cash equivalents$891,788 $2,760 $— $894,548 
Short-term investments12,313 92,440 — 104,753 
Prepaid expenses and other— 1,119 — 1,119 
Long-term investments— 134,278 — 134,278 
Other long-term assets11,456 24,953 — 36,409 
Total assets measured at fair value$915,557 $255,550 $— $1,171,107 
Liabilities:
Accrued liabilities and other short-term obligations$— $14,509 $— $14,509 
Total liabilities measured at fair value$— $14,509 $— $14,509 

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