Corporate Information And Statement Of Ifrs Compliance [Abstract]

Telenet Group Holding NV - Filing #3210244

Concept	As at 2021-12-31	2021-01-01 to 2021-12-31	As at 2020-12-31
Corporate information and statement of IFRS compliance [abstract]
Name of reporting entity or other means of identification	—	Telenet Group Holding NV	—
Domicile of entity	—	Bel	—
Legal form of entity	—	limited liability companies	—
Country of incorporation	—	Belgium	—
Address of entity's registered office	—	Liersesteenweg 4, 2800 Mechelen,	—
Principal place of business	—	Belgium	—
Description of nature of entity's operations and principal activities	—	Through its broadband network, the Company offers basic and enhanced	—
Name of parent entity	—	Telenet Group Holding NV	—
Disclosure of amounts to be recovered or settled after twelve months for classes of assets and liabilities that contain amounts to be recovered or settled both no more and more than twelve months after reporting date [text block]	—	—	—
Disclosure of amounts to be recovered or settled after twelve months for classes of assets and liabilities that contain amounts to be recovered or settled both no more and more than twelve months after reporting date [abstract]
Disclosure of amounts to be recovered or settled after twelve months for classes of assets and liabilities that contain amounts to be recovered or settled both no more and more than twelve months after reporting date [line items]
Current inventories	26,500,000 EUR	—	27,300,000 EUR
Current trade receivables	174,300,000 EUR	—	187,200,000 EUR
Current trade payables	166,500,000 EUR	—	174,900,000 EUR