v3.25.2
Assets held for sale (Details) - IHS Rwanda Limited - USD ($)
$ in Millions
Jun. 30, 2025
May 20, 2025
Disclosure of analysis of single amount of discontinued operations [line items]    
Percentage of ownership interests in subsidiary to be disposed   100.00%
Foreign exchange translation reserve $ (15.5)  
Between one and two years    
Disclosure of analysis of single amount of discontinued operations [line items]    
Agreed deferred consideration for sale of subsidiary   $ 70.0
Between two and three years    
Disclosure of analysis of single amount of discontinued operations [line items]    
Agreed deferred consideration for sale of subsidiary   24.5
Maximum    
Disclosure of analysis of single amount of discontinued operations [line items]    
Agreed consideration for sale of subsidiary   274.5
Agreed performance related earn out consideration from sale of subsidiary   $ 5.0