Stockholders' Equity - Schedule of Repurchase Agreements (Details) - USD ($) shares in Thousands, $ in Thousands |
9 Months Ended | ||||||||||
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Sep. 30, 2015 |
Sep. 30, 2014 |
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Equity, Class of Treasury Stock [Line Items] | |||||||||||
Common stock repurchased (in shares) | 432,616 | 570,056 | |||||||||
Common stock repurchased, value | $ 1,646,798 | $ 2,006,013 | |||||||||
Common Stock [Member] | |||||||||||
Equity, Class of Treasury Stock [Line Items] | |||||||||||
Common stock repurchased (in shares) | 0 | ||||||||||
Common stock repurchased, value | $ 0 | ||||||||||
Common Stock [Member] | Open Market And Privately Negotiated Repurchases [Member] | |||||||||||
Equity, Class of Treasury Stock [Line Items] | |||||||||||
Common stock repurchased (in shares) | [1] | 432,616 | 273,436 | ||||||||
Common stock repurchased, value | [1] | $ 1,646,798 | $ 909,609 | ||||||||
Common Stock [Member] | Amended October 2013 Share Repurchase Program [Member] | Liberty Media [Member] | |||||||||||
Equity, Class of Treasury Stock [Line Items] | |||||||||||
Common stock repurchased (in shares) | [2] | 0 | 92,889 | ||||||||
Common stock repurchased, value | [2] | $ 0 | $ 340,000 | ||||||||
Common Stock [Member] | May 2014 ASR Agreement [Member] | |||||||||||
Equity, Class of Treasury Stock [Line Items] | |||||||||||
Common stock repurchased (in shares) | [3] | 0 | 151,846 | ||||||||
Common stock repurchased, value | [3] | $ 0 | $ 506,404 | ||||||||
Common Stock [Member] | August 2014 ASR Agreement [Member] | |||||||||||
Equity, Class of Treasury Stock [Line Items] | |||||||||||
Common stock repurchased (in shares) | [4] | 0 | 51,885 | ||||||||
Common stock repurchased, value | [4] | $ 0 | $ 250,000 | ||||||||
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