Quarterly Financial Information (Unaudited) (Details) - USD ($) $ / shares in Units, $ in Millions |
3 Months Ended | 12 Months Ended | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Dec. 31, 2014 |
Sep. 30, 2014 |
Jun. 30, 2014 |
Mar. 31, 2014 |
Dec. 31, 2013 |
Sep. 30, 2013 |
Jun. 30, 2013 |
Mar. 31, 2013 |
Dec. 31, 2014 |
Dec. 31, 2013 |
Dec. 31, 2012 |
|
| Quarterly Financial Data [Abstract] | |||||||||||
| Revenue | $ 4,615.2 | $ 4,497.2 | $ 4,602.2 | $ 4,533.7 | $ 4,468.0 | $ 4,276.5 | $ 3,057.8 | $ 2,671.9 | $ 18,248.3 | $ 14,474.2 | $ 9,930.8 |
| Operating income | 273.3 | 703.7 | 669.5 | 581.7 | 517.6 | 521.2 | 445.1 | 528.2 | 2,228.2 | 2,012.1 | 1,983.1 |
| Net earnings (loss) attributable to Liberty Global shareholders | $ (523.4) | $ 157.1 | $ (249.9) | $ (78.8) | $ (121.2) | $ (830.1) | $ (11.6) | $ (1.0) | $ (695.0) | $ (963.9) | $ 322.8 |
| Basic and diluted earnings (loss) attributable to Liberty Global shareholders per share (note 3) (in dollars per share) | $ (0.62) | $ 0.20 | $ (0.32) | $ (0.10) | $ (0.16) | $ (1.04) | $ (0.02) | $ 0.00 | $ (0.87) | $ (1.43) | $ 0.60 |