Subsequent Event (Details)	1 Months Ended
	Jan. 31, 2020 USD ($)	Jan. 31, 2020 EUR (€)	Jan. 31, 2020 EUR (€)	Oct. 31, 2019 USD ($)	Oct. 31, 2019 EUR (€)
Telenet Dollar-Denominated Term Loan Facility | Medium-term Notes
Subsequent Event [Line Items]
Original issue amount				$ 220,000,000.0
Telenet Dollar-Denominated Term Loan Facility | Medium-term Notes | Subsequent Event
Subsequent Event [Line Items]
Original issue amount	$ 2,295,000,000.0
Outstanding principal amount	2,295,000,000.0
Telenet Euro-Denominated Term Loan Facility | Medium-term Notes
Subsequent Event [Line Items]
Original issue amount				$ 196,500,000	€ 175,000,000.0
Telenet Euro-Denominated Term Loan Facility | Medium-term Notes | Subsequent Event
Subsequent Event [Line Items]
Original issue amount	1,246,400,000		€ 1,110,000,000.0
Outstanding principal amount | €		€ 1,110,000,000.0
UPC Holding Dollar Denominated Term Loan Facility | Subsequent Event
Subsequent Event [Line Items]
Repayments of debt	1,140,000,000.0
UPC Holding Dollar Denominated Term Loan Facility | Medium-term Notes | Subsequent Event
Subsequent Event [Line Items]
Original issue amount	700,000,000.0
UPC Holding Euro-Denominated Term Loan Facility | Medium-term Notes | Subsequent Event
Subsequent Event [Line Items]
Original issue amount	$ 449,100,000		€ 400,000,000.0