v3.25.2
Restructuring Costs, Net - Activity within Liability Established for Restructuring Actions (Detail) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2025
Restructuring Cost and Reserve [Line Items]    
Beginning balance   $ 4.0
Ending Balance $ 5.9 5.9
CommScope NEXT Restructuring Plan [Member]    
Restructuring Cost and Reserve [Line Items]    
Beginning balance 8.2 4.0
Additional expense, net 3.0 14.2
Cash received (paid) 4.6 (3.1)
Third-party indemnification receivable [1]   0.6
Foreign exchange and other non-cash items (9.9) (9.8)
Ending Balance 5.9 5.9
Employee-Related Costs [Member] | CommScope NEXT Restructuring Plan [Member]    
Restructuring Cost and Reserve [Line Items]    
Beginning balance 8.2 4.0
Additional expense, net 2.8 13.2
Cash received (paid) (5.2) (11.5)
Third-party indemnification receivable [1]   0.0
Foreign exchange and other non-cash items 0.1 0.2
Ending Balance 5.9 5.9
Other Costs [Member] | CommScope NEXT Restructuring Plan [Member]    
Restructuring Cost and Reserve [Line Items]    
Beginning balance (0.0) 0.0
Additional expense, net 0.2 1.0
Cash received (paid) 9.8 8.4
Third-party indemnification receivable [1]   0.6
Foreign exchange and other non-cash items (10.0) (10.0)
Ending Balance $ 0.0 $ 0.0
[1] Reflects the reimbursement of other costs from a third-party, for which the Company is obligated to pay.