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v3.19.1

Basis of Presentation (Narrative) (Details) | 3 Months Ended
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Mar. 31, 2019
Telenet |
Basis of Presentation [Line Items] |
Percentage ownership in subsidiary | 60.30%
VodafoneZiggo JV |
Basis of Presentation [Line Items] |
Ownership percentage | 50.00%
Co-venturer ownership percentage | 5000.00%

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