Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Consolidated net income	$ 66,124	$ 8,961	$ 84,459
Available-for-sale securities:
Unrealized gain (loss) on available-for-sale securities, net of tax of $(288), $6 and $37 in 2017, 2016 and 2015, respectively	471	(11)	(64)
Reclassification adjustments recognized in net income, net of tax of $(33), $(9) and $(100) in 2017, 2016 and 2015, respectively	54	15	172
Net change in available-for-sale	525	4	108
Derivative instruments:
Unrealized gain (loss) on derivative instruments, net of tax of $(1,797), $(472) and $4,936 in 2017, 2016 and 2015, respectively	3,790	1,631	(8,319)
Reclassification adjustments recognized in net income, net of tax of $(535), $(1,691) and $(2,791) in 2017, 2016 and 2015, respectively	1,128	5,821	4,704
Net change in derivative instruments	4,918	7,452	(3,615)
Pension obligations:
Unrealized (loss) gain on pension obligations, net of tax of $1,391, $1,425 and $(1,082) in 2017, 2016 and 2015, respectively	(2,487)	(2,934)	2,044
Reclassification adjustments recognized in net income, net of tax of $(170), $(155) and $(498) in 2017, 2016 and 2015, respectively	304	319	942
Net change in pension obligations	(2,183)	(2,615)	2,986
Cumulative translation adjustments	(2,050)	11,096	(1,078)
Other comprehensive income (loss), net of tax	1,210	15,937	(1,599)
Comprehensive income	67,334	24,898	82,860
Comprehensive loss attributable to noncontrolling interest	(25,954)	(9,127)	(7,747)
Comprehensive income attributable to ARRIS International plc	$ 93,288	$ 34,025	$ 90,607