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Information Regarding Changes in ARRIS's Aggregate Product Warranty Liabilities (Detail)
$ in Thousands
6 Months Ended
Jun. 30, 2018
USD ($)
Product Warranty Liability [Line Items]  
Beginning balance $ 76,089
Accruals related to warranties (including changes in assumptions) 15,378
Settlements made (in cash or in kind) (23,010)
Ending balance $ 68,457