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Fair Value Measurements
 9 Months Ended
Aug. 01, 2020
Fair Value Disclosures [Abstract]  
Fair Value Measurements FAIR VALUE MEASUREMENTS
        As of the date indicated, the following table summarizes the assets and liabilities that are recorded at fair value on a recurring basis (in thousands):
 August 1, 2020
 Level 1Level 2Level 3Total
Assets:    
Money market funds$899,212 $— $— $899,212 
Bond mutual fund50,309 — — 50,309 
Deferred compensation plan assets7,830 — — 7,830 
U.S. government obligations— 70,404 — 70,404 
Foreign currency forward contracts— 467 — 467 
Total assets measured at fair value$957,351 $70,871 $— $1,028,222 
Liabilities:
Foreign currency forward contracts$— $1,273 $— $1,273 
Forward starting interest rate swaps— 31,932 — 31,932 
Total liabilities measured at fair value$— $33,205 $— $33,205 
November 2, 2019
Level 1Level 2Level 3Total
Assets:
Money market funds$759,114 $— $— $759,114 
Deferred compensation plan assets4,974 — — 4,974 
U.S. government obligations— 119,954 — 119,954 
Foreign currency forward contracts— 1,570 — 1,570 
Total assets measured at fair value$764,088 $121,524 $— $885,612 
Liabilities:
Foreign currency forward contracts$— $35 $— $35 
Forward starting interest rate swaps— 21,093 — 21,093 
Contingent consideration— — 3,705 3,705 
Total liabilities measured at fair value$— $21,128 $3,705 $24,833 
As of the date indicated, the assets and liabilities above are presented on Ciena’s Condensed Consolidated Balance Sheets as follows (in thousands):
 August 1, 2020
 Level 1Level 2Level 3Total
Assets:    
Cash equivalents$949,521 $— $— $949,521 
Short-term investments— 70,404 — 70,404 
Prepaid expenses and other— 467 — 467 
Other long-term assets7,830 — — 7,830 
Total assets measured at fair value$957,351 $70,871 $— $1,028,222 
Liabilities:
Accrued liabilities and other short-term obligations— 1,273 — 1,273 
Other long-term obligations— 31,932 — 31,932 
Total liabilities measured at fair value$— $33,205 $— $33,205 
 November 2, 2019
 Level 1Level 2Level 3Total
Assets:    
Cash equivalents$759,114 $— $— $759,114 
Short-term investments— 109,940 — 109,940 
Prepaid expenses and other— 1,570 — 1,570 
Long-term investments— 10,014 — 10,014 
Other long-term assets4,974 — — 4,974 
Total assets measured at fair value$764,088 $121,524 $— $885,612 
Liabilities:
Accrued liabilities and other short-term obligations$— $35 $— $35 
Other long-term obligations— 21,093 3,705 24,798 
Total liabilities measured at fair value$— $21,128 $3,705 $24,833 

Ciena did not have any transfers between Level 1 and Level 2 fair value measurements during the periods presented.
As of August 1, 2020, none of Ciena’s existing liabilities were classified as Level 3. As of November 2, 2019, Ciena’s Level 3 liability included $3.7 million in accrued liabilities and other short-term obligations. This reflected a contingent consideration element of a three-year payout arrangement associated with Ciena’s purchase of DonRiver Holdings, LLC (“DonRiver”) in the fourth quarter of fiscal 2018.