Derivative Instruments (Cross-currency Swap Contracts) (Details) - 9 months ended Sep. 30, 2026 - Cross-currency swap € in Millions, $ in Millions |
USD ($) |
EUR (€) |
|---|---|---|
| VodafoneZiggo | ||
| Derivative [Line Items] | ||
| Weighted average remaining life | 2 years 7 months 6 days | |
| Telenet | ||
| Derivative [Line Items] | ||
| Weighted average remaining life | 1 year 7 months 6 days | |
| Notional amount due from counterparty | VodafoneZiggo | ||
| Derivative [Line Items] | ||
| Notional amount | $ | $ 7,954.0 | |
| Notional amount due from counterparty | Telenet | ||
| Derivative [Line Items] | ||
| Notional amount | 2,308.5 | € 1,296.6 |
| Notional amount due to counterparty | VodafoneZiggo | ||
| Derivative [Line Items] | ||
| Notional amount | € | 6,838.0 | |
| Notional amount due to counterparty | Telenet | ||
| Derivative [Line Items] | ||
| Notional amount | $ 1,495.0 | € 2,053.4 |