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Commitments and Contingencies (Details)
$ in Millions
 2 Months Ended
Jun. 20, 2024
USD ($)
Oct. 27, 2023
USD ($)
purportedStockholder
Mar. 16, 2023
case
Jan. 27, 2021
case
Sep. 14, 2020
case
Oct. 21, 2020
case
Jul. 31, 2018
case
Dec. 31, 2024
USD ($)
Mar. 23, 2017
case
Loss Contingencies [Line Items]                  
Litigation settlement amount | $ $ 434.0                
Period of non-monetary legal provision to keep roles of Chair and Chief Executive Officer separate 3 years                
Period of non-monetary legal provision to include performance-based vesting condition for restricted stock or restricted stock units 3 years                
Estimate of insurance coverage in dispute | $               $ 90.0  
Under Armour Securities Litigation, Case No. 17-cv-00388-RDB | Pending Litigation                  
Loss Contingencies [Line Items]                  
Pending claims | case                 3
Under Armour Securities Litigation, Case No. 17-cv-00388-RDB | Settled Litigation                  
Loss Contingencies [Line Items]                  
Estimated insurance recoveries | $ $ 63.0                
Securities Class Actions                  
Loss Contingencies [Line Items]                  
Number of complaints | case         2        
Derivative Complaints                  
Loss Contingencies [Line Items]                  
Number of complaints | case     4 4   2 2    
Number of purported stockholders included in complaint | purportedStockholder   4              
Number of complaints dismissed | case     1            
Derivative Complaints | Settled Litigation                  
Loss Contingencies [Line Items]                  
Settlement amount | $   $ 8.9