v3.3.1.900

Acquisitions (Virgin Media) (Narrative) (Details) - USD ($) $ / shares in Units, $ in Millions |  | 7 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Jun. 07, 2013 | Dec. 31, 2013 | Dec. 31, 2014 | Feb. 28, 2013
Business Acquisition [Line Items] |  |  |  |
Stock incentive awards outstanding (in shares) | 13,030,000 |  |  |
Options [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Stock incentive awards outstanding (in shares) | 9,860,000 |  |  |
RSUs [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Stock incentive awards outstanding (in shares) | 3,170,000 |  |  |
Virgin Media Acquisition [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Weighted average useful life of acquired intangible assets | 7 years |  |  |
Other accrued and current liabilities | $ (1,892.2) |  |  |
Acquisition costs | 51.5 |  |  |
Virgin Media Acquisition [Member] | VM Convertible Notes [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Percentage of debt instrument conversion |  | 94.40% |  |
Virgin Media Acquisition [Member] | Capacity Arrangement Contract [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Other accrued and current liabilities | $ (35.6) |  |  |
Other current liabilities amortized |  | $ 22.8 | $ 12.8 |
Virgin Media Merger Agreement [Member] | VM Senior Notes [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Granted security interest in escrow account |  |  |  | $ 3,557.5
Class A Ordinary Shares [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Common stock, issued (in shares) |  | 222,081,117 | 251,167,686 |
Common stock, outstanding (in shares) |  | 222,081,117 | 251,167,686 |
Class B Ordinary Shares [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Common stock, issued (in shares) |  | 10,147,184 | 10,139,184 |
Common stock, outstanding (in shares) |  | 10,147,184 | 10,139,184 |
Class C Ordinary Shares [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Common stock, issued (in shares) |  | 556,221,669 | 630,353,372 |
Common stock, outstanding (in shares) |  | 556,221,669 | 630,353,372 |
Virgin Media [Member] | Virgin Media Merger Agreement [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Acquired entity cash received from acquiring entity (in dollars per share) | $ 17.50 |  |  |
Virgin Media [Member] | Class A Ordinary Shares [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Common stock, issued (in shares) | 70,233,842 |  |  |
Virgin Media [Member] | Class A Ordinary Shares [Member] | Virgin Media Merger Agreement [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Acquired entity shares received of acquiring entity (in shares) | 0.2582 |  |  |
Virgin Media [Member] | Class C Ordinary Shares [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Common stock, issued (in shares) | 175,122,182 |  |  |
Virgin Media [Member] | Class C Ordinary Shares [Member] | Virgin Media Merger Agreement [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Acquired entity shares received of acquiring entity (in shares) | 0.6438 |  |  |
Virgin Media [Member] | Common Stock [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Common stock, outstanding (in shares) | 272,013,333 |  |  |
Liberty Global [Member] | Class A Ordinary Shares [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Common stock, issued (in shares) | 141,234,331 |  |  |
Liberty Global [Member] | Class A Ordinary Shares [Member] | Virgin Media Merger Agreement [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Acquired entity shares received of acquiring entity (in shares) | 1 |  |  |
Liberty Global [Member] | Class B Ordinary Shares [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Common stock, issued (in shares) | 10,176,295 |  |  |
Liberty Global [Member] | Class B Ordinary Shares [Member] | Virgin Media Merger Agreement [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Acquired entity shares received of acquiring entity (in shares) | 1 |  |  |
Liberty Global [Member] | Class C Ordinary Shares [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Common stock, issued (in shares) | 362,556,220 |  |  |
Liberty Global [Member] | Class C Ordinary Shares [Member] | Virgin Media Merger Agreement [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Acquired entity shares received of acquiring entity (in shares) | 1 |  |  |
Liberty Global [Member] | Series A Common Stock [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Share price (in dollar/euro per share) | $ 38.94 |  |  |
Liberty Global [Member] | Series C Common Stock [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Share price (in dollar/euro per share) | $ 36.37 |  |  |

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