v3.24.0.1
Employee Benefit Plans - Additional Information (Detail) - USD ($)
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Defined Benefit Plan Disclosure [Line Items]        
Company recognized pretax costs (benefits) $ 2,100,000 $ (2,700,000) $ 1,300,000  
Accrued liability, included in other noncurrent liabilities 22,700,000 22,500,000    
Defined contribution plans expenses 0      
Pension Benefit Plan [Member]        
Defined Benefit Plan Disclosure [Line Items]        
Percentage required for corridor approach       10.00%
Pension Benefit Plan [Member] | U.S.Plans [Member]        
Defined Benefit Plan Disclosure [Line Items]        
Company's defined benefit pension plans 9,400,000 9,400,000    
Curtailment gain 0      
Defined benefit pension plan assets 0 0    
Company expects to contribute to defined benefit pension plans 900,000      
Pension and other postretirement benefit liabilities 8,500,000 8,500,000    
Pretax gains recognized in accumulated other comprehensive loss 600,000 1,000,000    
Net periodic benefit cost 400,000 400,000 400,000  
Pension Benefit Plan [Member] | Non-U.S.Plans [Member]        
Defined Benefit Plan Disclosure [Line Items]        
Company's defined benefit pension plans 181,500,000 159,900,000    
Curtailment gain 100,000 0 2,500,000  
Defined benefit pension plan assets 189,400,000 181,200,000 279,400,000  
Company expects to contribute to defined benefit pension plans 4,900,000      
Pension and other postretirement benefit liabilities 16,500,000 15,300,000    
Pretax gains recognized in accumulated other comprehensive loss (17,300,000) (16,500,000)    
Net periodic benefit cost 7,700,000 6,200,000 2,900,000  
CommScope, Inc. Retirement Savings Plan [Member]        
Defined Benefit Plan Disclosure [Line Items]        
Company's contribution to defined contribution retirement savings plans $ 27,900,000 $ 48,100,000 $ 49,000,000