v3.24.0.1
Summary of significant accounting policies - Intangible Assets (Details)
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Disclosure of detailed information about intangible assets [line items]      
Period over which cost of decommissioning of telecommunication towers incurred 20 years    
Network | Bottom of range      
Disclosure of detailed information about intangible assets [line items]      
Intangible assets estimated useful lives 14 years 14 years 14 years
Remaining amortization period of intangible assets 3 years 4 years 5 years
Network | Top of range      
Disclosure of detailed information about intangible assets [line items]      
Intangible assets estimated useful lives 35 years 34 years 26 years
Remaining amortization period of intangible assets 32 years 33 years 26 years
Customerrelated intangible assets | Bottom of range      
Disclosure of detailed information about intangible assets [line items]      
Intangible assets estimated useful lives 5 years 5 years 5 years
Remaining amortization period of intangible assets 19 years 20 years 21 years
Customerrelated intangible assets | Top of range      
Disclosure of detailed information about intangible assets [line items]      
Intangible assets estimated useful lives 41 years 41 years 37 years
Remaining amortization period of intangible assets 39 years 40 years 36 years
Licenses | Bottom of range      
Disclosure of detailed information about intangible assets [line items]      
Intangible assets estimated useful lives 3 years 3 years 3 years
Licenses | Top of range      
Disclosure of detailed information about intangible assets [line items]      
Intangible assets estimated useful lives 15 years 15 years 15 years
Computer software | Bottom of range      
Disclosure of detailed information about intangible assets [line items]      
Intangible assets estimated useful lives 3 years    
Computer software | Top of range      
Disclosure of detailed information about intangible assets [line items]      
Intangible assets estimated useful lives 5 years