Accumulated Other Comprehensive Earnings (Table 2) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Foreign currency translation adjustments, pre-tax	$ (0.6)
Foreign currency translation adjustments, tax	0.2
Foreign currency translation adjustments	(0.4)
Other comprehensive earnings	911.4	91.3	48.2
Comprehensive earnings attributable to noncontrolling interests	(41.3)	(64.8)	(80.7)
Liberty Global plc [Member]
Foreign currency translation adjustments, pre-tax	896.4	76.0	82.3
Cash flow hedges		15.1	(24.8)
Pension related adjustments, pre-tax	12.1	6.0	(22.2)
Other comprehensive earnings, pre- tax	908.5	97.1	35.3
Other comprehensive earnings attributable to noncontrolling interests	17.3	0.1	25.0
Other comprehensive earnings attributable to Liberty Global stockholders, pre-tax	925.8	97.2	60.3
Foreign currency translation adjustments, tax	4.4	(0.6)	0.9
Unrealized losses on cash flow hedges, tax		(4.6)	7.6
Pension related adjustments, tax	(1.5)	(0.6)	4.4
Other comprehensive earnings, tax	2.9	(5.8)	12.9
Other comprehensive earnings attributable to noncontrolling interests, tax	(0.4)	(0.4)	(4.0)
Other comprehensive earnings attributable to Liberty Global stockholders, tax	2.5	(6.2)	8.9
Foreign currency translation adjustments	900.8	75.4	83.2
Unrealized losses on cash flow hedges, net of tax		10.5	(17.2)
Pension related adjustments, net of tax	10.6	5.4	(17.8)
Other comprehensive earnings	911.4	91.3	48.2
Comprehensive earnings attributable to noncontrolling interests	16.9	(0.3)	21.0
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Noncontrolling Interest	$ 928.3	$ 91.0	$ 69.2