Stock-Based Compensation (Outstanding Awards) (Details) (Common Class A, USD $) In Millions, except Share data, unless otherwise specified	6 Months Ended
Jun. 30, 2014
Liberty Interactive
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Outstanding options	30,607,000
Options granted	1,810,000
Options exercised	(1,965,000)
Options forfeited/cancelled	(131,000)
Outstanding options	30,321,000
Exercisable options	14,765,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract]
Outstanding WAEP	$ 17.98
WAEP of grants in the period	$ 29.21
WAEP exercised	$ 14.54
WAEP forfeited/cancelled during period	$ 20.35
Outstanding WAEP	$ 18.86
Exercisable WAEP	$ 17.04
Weighted average remaining life - options outstanding	4 years 9 months
Weighted average remaining life - options exercisable	4 years 3 months
Aggregate intrinsic value of options outstanding	$ 319
Aggregate intrinsic value of options exercisable	182
Liberty Ventures
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Outstanding options	1,932,000
Options granted	1,000
Options exercised	(99,000)
Options forfeited/cancelled	0
Outstanding options	1,834,000
Exercisable options	1,033,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract]
Outstanding WAEP	$ 28.71
WAEP of grants in the period	$ 73.05
WAEP exercised	$ 25.89
WAEP forfeited/cancelled during period	$ 0.00
Outstanding WAEP	$ 28.88
Exercisable WAEP	$ 28.15
Weighted average remaining life - options outstanding	4 years 8 months
Weighted average remaining life - options exercisable	4 years 5 months
Aggregate intrinsic value of options outstanding	82
Aggregate intrinsic value of options exercisable	$ 47

Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of vested portions of options outstanding and currently exercisable.

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The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

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The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

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Weighted average remaining contractual term for vested portions of options outstanding and currently exercisable or convertible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan.

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Net number of share options (or share units) granted during the period.

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Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding.

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Number of options outstanding, including both vested and non-vested options.

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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Weighted average price at which option holders acquired shares when converting their stock options into shares.

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Weighted average price at which grantees could have acquired the underlying shares with respect to stock options that were terminated.

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Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

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Number of share options (or share units) exercised during the current period.

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