Financing - Additional Information (Detail) (USD $)
3 Months Ended 12 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Dec. 31, 2014
Debt Instrument [Line Items]      
Repayment of senior secured loan $ 2,199,000 $ 17,558,000  
Long-term debt proceeds   15,000,000  
Total assets 4,958,440,000   4,955,885,000
Total liabilities 3,619,086,000   3,648,266,000
Net sales 825,400,000 935,036,000  
Interest expense 36,329,000 42,280,000  
Weighted average effective interest rate 5.38%   5.38%
CommScope Holding Company, Inc. [Member]      
Debt Instrument [Line Items]      
Total debt 2,156,100,000    
Senior Payment In Kind Toggle Notes [Member] | CommScope Holding Company, Inc. [Member]      
Debt Instrument [Line Items]      
Interest expense 9,500,000 9,500,000  
Interest expense, Net of tax 6,100,000 6,100,000  
Senior Secured Term Loan [Member]      
Debt Instrument [Line Items]      
Repayment of senior secured loan 2,200,000    
Senior Secured Revolving Credit Facility [Member]      
Debt Instrument [Line Items]      
Long-term debt proceeds 0    
Remaining available capacity under revolving credit facility 283,900,000    
8.25% Senior Notes Due January 2019 [Member] | Non-Guarantor Subsidiaries [Member] | Assets, Total [Member]      
Debt Instrument [Line Items]      
Total assets 1,092,000,000   1,089,000,000
Concentration risk percentage 22.00%   22.00%
8.25% Senior Notes Due January 2019 [Member] | Non-Guarantor Subsidiaries [Member] | Liabilities, Total [Member]      
Debt Instrument [Line Items]      
Concentration risk percentage 7.00%   8.00%
Total liabilities 265,000,000   282,000,000
8.25% Senior Notes Due January 2019 [Member] | Non-Guarantor Subsidiaries [Member] | Sales Revenue, Net [Member]      
Debt Instrument [Line Items]      
Concentration risk percentage 45.00% 34.00%  
Net sales $ 375,000,000 $ 320,000,000  
Minimum [Member] | Senior Payment In Kind Toggle Notes [Member]      
Debt Instrument [Line Items]      
Interest rate 6.625%    
Maximum [Member] | Senior Payment In Kind Toggle Notes [Member]      
Debt Instrument [Line Items]      
Interest rate 7.375%