Accumulated Other Comprehensive Earnings (Table 1) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Beginning Balance	$ 1,637.8	$ 1,486.4	$ 1,438.2
Other comprehensive earnings including portion attributed to noncontrolling interests	911.4	91.3	48.2
Ending Balance	2,549.2	1,637.8	1,486.4
Total Liberty Global shareholders [Member]
Beginning Balance	1,604.1	1,529.7	1,434.7
Other comprehensive earnings attributed to foreign currency translation adjustments	918.1	74.4	95.0
Ending Balance	2,522.2	1,604.1	1,529.7
Beginning Balance	0	(10.5)	(1.3)
Other comprehensive earnings attributed to unrealized gains (losses) on cash flow hedges	0	10.5	(9.2)
Ending Balance	0	0	(10.5)
Beginning Balance	(3.6)	(9.7)	6.9
Other comprehensive earnings attributed to pension related adjustments	10.2	6.1	(16.6)
Ending Balance	6.6	(3.6)	(9.7)
Beginning Balance	1,600.5	1,509.5	1,440.3
Other comprehensive earnings attributed to Liberty Global stockholders	928.3	91.0	69.2
Other comprehensive earnings including portion attributed to noncontrolling interests	928.3	91.0	69.2
Ending Balance	2,528.8	1,600.5	1,509.5
Non-controlling interests [Member]
Beginning Balance	37.3	(23.1)	(2.1)
Other comprehensive earnings attributed to noncontrolling interests	(16.9)	0.3	(21.0)
Other comprehensive earnings including portion attributed to noncontrolling interests	(16.9)	0.3	(21.0)
Ending Balance	20.4	37.3	(23.1)
Austar [Member]
Other comprehensive earnings including portion attributed to noncontrolling interests		60.1
Austar [Member] \| Total Liberty Global shareholders [Member]
Other comprehensive earnings attributed to foreign currency translation adjustments		0
Other comprehensive earnings attributed to unrealized gains (losses) on cash flow hedges		0
Other comprehensive earnings attributed to pension related adjustments		0
Other comprehensive earnings attributed to Liberty Global stockholders		0
Austar [Member] \| Non-controlling interests [Member]
Other comprehensive earnings attributed to noncontrolling interests		$ 60.1

Accumulated Other Comprehensive Income Loss Before Tax Adjustment

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Accumulated Other Comprehensive Income Loss Cumulative Changes In Net Gain Loss From Cash Flow Hedges Before Tax Effect

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- Definition

Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Before Tax

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Accumulated Other Comprehensive Income Loss Foreign Currency Translation Before Tax Adjustment

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Net of tax and reclassification adjustments amount of the increase (decrease) in accumulated other comprehensive income (loss) related to pension and other postretirement benefit plans, attributable to the parent entity.

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Net of tax and reclassification adjustments amount of the change in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges, which is attributable to the parent entity. Also includes an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss).

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Amount after tax and reclassification adjustments, resulting from the process of expressing in the reporting currency of the reporting entity those amounts that are denominated or measured in a different currency, and from transactions whose terms are denominated in a currency other than the entity's functional currency, which is attributable to the parent entity.

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Net of tax amount of other comprehensive income (loss) attributable to both parent entity and noncontrolling interest.

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