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Guarantees (Tables)
9 Months Ended
Sep. 30, 2018
Guarantees and Product Warranties [Abstract]  
Schedule of changes in ARRIS's aggregate product warranty liabilities

 Information regarding the changes in ARRIS’s aggregate product warranty liabilities for the nine months ended September 30, 2018 was as follows (in thousands):

 

Balance at December 31, 2017 $76,089 
Warranty reserve at acquisition adjustment  827 
Accruals related to warranties (including changes in assumptions)  24,958 
Settlements made (in cash or in kind)  (33,790)
Balance at September 30, 2018 $68,084