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FAIR VALUE MEASUREMENTS
 12 Months Ended
Oct. 30, 2021
Fair Value Disclosures [Abstract]  
FAIR VALUE MEASUREMENTS FAIR VALUE MEASUREMENTSAs of the dates indicated, the following tables summarize the fair value of assets and liabilities that were recorded at fair value on a recurring basis (in thousands):
 October 30, 2021
 Level 1Level 2Level 3Total
Assets:    
Money market funds$1,120,851 $— $— $1,120,851 
Bond mutual fund75,425 — — 75,425 
Time deposits30,036 — — 30,036 
Deferred compensation plan assets12,968 — — 12,968 
U.S. government obligations— 251,521 — 251,521 
Foreign currency forward contracts— 14,935 — 14,935 
Total assets measured at fair value$1,239,280 $266,456 $— $1,505,736 
Liabilities:
Foreign currency forward contracts$— $716 $— $716 
Forward starting interest rate swaps— 15,928 — 15,928 
Total liabilities measured at fair value$— $16,644 $— $16,644 
 October 31, 2020
 Level 1Level 2Level 3Total
Assets:    
Money market funds$889,293 $— $— $889,293 
Bond mutual fund50,361 — — $50,361 
Deferred compensation plan assets8,213 — — 8,213 
U.S. government obligations— 232,893 — 232,893 
Foreign currency forward contracts— 82 — 82 
Total assets measured at fair value$947,867 $232,975 $— $1,180,842 
Liabilities:
Foreign currency forward contracts$— $681 $— $681 
Forward starting interest rate swaps— 28,513 — 28,513 
Total liabilities measured at fair value$— $29,194 $— $29,194 
As of the dates indicated, the assets and liabilities above were presented on Ciena’s Consolidated Balance Sheet as follows (in thousands):
 October 30, 2021
 Level 1Level 2Level 3Total
Assets:    
Cash equivalents$1,226,312 $— $— $1,226,312 
Short-term investments— 181,483 — 181,483 
Prepaid expenses and other— 14,935 — 14,935 
Long-term investments— 70,038 — 70,038 
Other long-term assets12,968 — — 12,968 
Total assets measured at fair value$1,239,280 $266,456 $— $1,505,736 
Liabilities:
Accrued liabilities and other short-term obligations$— $716 $— $716 
Other long-term obligations— 15,928 — 15,928 
Total liabilities measured at fair value$— $16,644 $— $16,644 

 October 31, 2020
 Level 1Level 2Level 3Total
Assets:    
Cash equivalents$939,654 $— $— $939,654 
Short-term investments— 150,667 — 150,667 
Prepaid expenses and other— 82 — 82 
Other long-term assets8,213 82,226 — 90,439 
Total assets measured at fair value$947,867 $232,975 $— $1,180,842 
Liabilities:
Accrued liabilities and other short-term obligations$— $681 $— $681 
Other long-term obligations— 28,513 — 28,513 
Total liabilities measured at fair value$— $29,194 $— $29,194 

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

As of October 30, 2021, none of Ciena’s existing liabilities were classified as Level 3.