Revenue from Contracts with Customers (Details 2) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended										12 Months Ended
	Dec. 31, 2018		Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017		Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018		Dec. 31, 2017		Dec. 31, 2016
ASSETS
Accounts receivable	$ 1,225,975					$ 1,218,089					$ 1,225,975		$ 1,218,089
Other current assets	144,251					145,953					144,251		145,953
Deferred incomes taxes	175,405					115,436					175,405		115,436
Liabilities
Deferred revenue (current and non-current)	169,998					168,757					169,998		168,757
Revenues
Net sales	1,787,142	[1],[2]	$ 1,651,248	$ 1,726,540	$ 1,577,710	1,738,593	[3],[4],[5],[6]	$ 1,728,524	$ 1,664,170	$ 1,483,105	6,742,640		6,614,392		$ 6,829,118
Costs and expenses
Cost of sales											4,823,781		4,948,153		5,121,501
Income tax benefit											(24,344)		(44,921)		15,131
Consolidated net income											107,286		66,124		8,961
Net loss attributable to non-controlling interest											(6,454)		(25,903)		(9,139)
Net income attributable to ARRIS International plc	$ 44,507	[1],[2]	$ 47,079	$ 35,754	$ (13,600)	$ 12,469	[3],[4],[5],[6]	$ 88,320	$ 30,336	$ (39,098)	$ 113,740		$ 92,027		$ 18,100
Net income per ordinary share:
Basic (in dollars per share)	$ 0.26	[1],[2]	$ 0.26	$ 0.19	$ (0.07)	$ 0.07	[3],[4],[5],[6]	$ 0.47	$ 0.16	$ (0.21)	$ 0.63	[7]	$ 0.49	[7]	$ 0.09	[7]
Diluted (in dollars per share)	$ 0.25	[1],[2]	$ 0.26	$ 0.19	$ (0.07)	$ 0.07	[3],[4],[5],[6]	$ 0.47	$ 0.16	$ (0.21)	$ 0.62	[7]	$ 0.49	[7]	$ 0.09	[7]
Pro Forma
ASSETS
Accounts receivable	$ 1,210,288										$ 1,210,288
Other current assets	144,187										144,187
Deferred incomes taxes	172,967										172,967
Liabilities
Deferred revenue (current and non-current)	$ 169,426										169,426
Revenues
Net sales											6,727,525
Costs and expenses
Cost of sales											4,823,845
Income tax benefit											(21,905)
Consolidated net income											89,668
Net loss attributable to non-controlling interest											(7,282)
Net income attributable to ARRIS International plc											$ 96,950
Net income per ordinary share:
Basic (in dollars per share)											$ 0.54
Diluted (in dollars per share)											$ 0.53

[1] For the quarter ended December 31, 2018, the Company recorded a gain on the sale of its Taiwan factory and certain equipment of $13.3 million.

[2] In the fourth quarter, the Company recorded losses of $5.7 million associated with the settlement and partial curtailment of its U.S. and Taiwan pension plans.

[3] During 2017, the Company recorded a foreign currency remeasurement loss of $10.5 million related primarily to a deferred income tax liability, in the United Kingdom. This deferred income tax liability is denominated in GBP. The foreign currency remeasurement gain derives from the remeasurement of the GBP deferred income tax liability to the USD, since the date of the acquisition.

[4] For the quarter ended December 31, 2017, the Company recorded an increase to net sales of $8.1 million, to reverse previous quarters reduction in net sales in connection with Warrants.

[5] In the fourth quarter of 2017, the Company recorded acquisition costs of $61.5 million related to the cash settlement of stock-based awards held by transferring employees.

[6] In the fourth quarter of 2017, the Company recorded partial impairments of goodwill and indefinite-lived tradenames of $51.2 million and $3.8 million, respectively, acquired in our ActiveVideo acquisition and included as part of our Cloud TV reporting unit, of which $19.3 million is attributable to noncontrolling interest.

[7] Calculated based on net income attributable to shareowners of ARRIS International plc.