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FAIR VALUE MEASUREMENTS
 6 Months Ended
Apr. 29, 2023
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):
 April 29, 2023
 Level 1Level 2Level 3Total
Assets:    
Money market funds$804,637 $— $— $804,637 
Bond mutual fund101,352 — — 101,352 
Time deposits91,451 — — 91,451 
Deferred compensation plan assets11,565 — — 11,565 
U.S. government obligations— 119,047 — 119,047 
Corporate debt securities— 57,658 — 57,658 
Foreign currency forward contracts— 4,240 — 4,240 
Interest rate swaps— 6,597 — 6,597 
Total assets measured at fair value$1,009,005 $187,542 $— $1,196,547 
Liabilities:
Foreign currency forward contracts$— $10,364 $— $10,364 
Interest rate swaps— 3,211 — 3,211 
Total liabilities measured at fair value$— $13,575 $— $13,575 
October 29, 2022
Level 1Level 2Level 3Total
Assets:
Money market funds$639,024 $— $— $639,024 
Bond mutual fund71,145 — — 71,145 
Time deposits55,825 — — 55,825 
Deferred compensation plan assets12,751 — — 12,751 
U.S. government obligations— 134,584 — 134,584 
Corporate debt securities— 54,495 — 54,495 
Foreign currency forward contracts— 251 — 251 
Interest rate swaps— 12,306 — 12,306 
Total assets measured at fair value$778,745 $201,636 $— $980,381 
Liabilities:
Foreign currency forward contracts$— $15,605 $— $15,605 
Total liabilities measured at fair value$— $15,605 $— $15,605 

As of the dates indicated, the assets and liabilities above are presented on Ciena’s Condensed Consolidated Balance Sheets as follows (in thousands):
 April 29, 2023
 Level 1Level 2Level 3Total
Assets:    
Cash equivalents$990,921 $7,523 $— $998,444 
Short-term investments6,519 143,945 — 150,464 
Prepaid expenses and other— 4,240 — 4,240 
Long-term investments— 25,237 — 25,237 
Other long-term assets11,565 6,597 — 18,162 
Total assets measured at fair value$1,009,005 $187,542 $— $1,196,547 
Liabilities:
Accrued liabilities and other short-term obligations$— $10,364 $— $10,364 
Other long-term obligations— 3,211 — 3,211 
Total liabilities measured at fair value$— $13,575 $— $13,575 
 October 29, 2022
 Level 1Level 2Level 3Total
Assets:    
Cash equivalents$757,725 $7,974 $— $765,699 
Short-term investments8,269 145,720 — 153,989 
Prepaid expenses and other— 251 — 251 
Long-term investments— 35,385 — 35,385 
Other long-term assets12,751 12,306 — 25,057 
Total assets measured at fair value$778,745 $201,636 $— $980,381 
Liabilities:
Accrued liabilities and other short-term obligations$— $15,605 $— $15,605 
Total liabilities measured at fair value$— $15,605 $— $15,605 
Ciena did not have any transfers between Level 1 and Level 2 fair value measurements during the periods presented.