Restructuring Costs (Credits), Net - Additional Information (Detail) $ in Millions	9 Months Ended
	Sep. 30, 2022 USD ($)
Commscope Next [Member]
Restructuring Cost and Reserve [Line Items]
Recognized restructuring charges	$ 139.9
Commscope Next [Member] | Between 2023 and 2024
Restructuring Cost and Reserve [Line Items]
Expected cash payments	51.5
Commscope Next [Member] | Remainder of 2022 [Member]
Restructuring Cost and Reserve [Line Items]
Expected cash payments	12.1
ARRIS [Member]
Restructuring Cost and Reserve [Line Items]
Recognized restructuring charges	179.7
ARRIS [Member] | 2023 [Member]
Restructuring Cost and Reserve [Line Items]
Expected cash payments	0.8
ARRIS [Member] | Remainder of 2022 [Member]
Restructuring Cost and Reserve [Line Items]
Expected cash payments	$ 0.4