Tracking Stocks (Narrative) (Details) $ / shares in Units, $ in Millions |
1 Months Ended | 3 Months Ended | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Oct. 26, 2016
$ / shares
|
May 16, 2016
shares
|
Jun. 30, 2016
USD ($)
|
Jun. 16, 2016
$ / shares
shares
|
May 11, 2016 |
Mar. 31, 2017
shares
|
Oct. 27, 2016 |
Sep. 30, 2016
USD ($)
shares
|
Sep. 07, 2016 |
Apr. 15, 2016
shares
|
Dec. 31, 2015
USD ($)
|
Sep. 30, 2015
USD ($)
|
Dec. 31, 2014
USD ($)
|
|
| Targeted or Tracking Stock, Stock [Line Items] | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý |
| Number of tracking stock groups | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | 3 | Ìý | Ìý | Ìý |
| Cash and cash equivalents | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | $ 940 | Ìý | Ìý | $ 201 | $ 588 | $ 681 |
| Outstanding principal | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | 8,099 | Ìý | Ìý | Ìý | Ìý | Ìý |
| èßäÉçÇø Sirius XM Group | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý |
| Targeted or Tracking Stock, Stock [Line Items] | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý |
| Number of tracking stock shares received in the Recapitalization for one share of èßäÉçÇø Media common stock | shares | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | 1 | Ìý | Ìý | Ìý |
| Cash and cash equivalents | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | 611 | Ìý | Ìý | 112 | 153 | 148 |
| Outstanding principal | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | 6,407 | Ìý | Ìý | Ìý | Ìý | Ìý |
| èßäÉçÇø Braves Group | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý |
| Targeted or Tracking Stock, Stock [Line Items] | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý |
| Number of tracking stock shares received in the Recapitalization for one share of èßäÉçÇø Media common stock | shares | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | 0.1 | Ìý | Ìý | Ìý |
| Cash and cash equivalents | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | 109 | Ìý | Ìý | 13 | 31 | 11 |
| Outstanding principal | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | 211 | Ìý | Ìý | Ìý | Ìý | Ìý |
| èßäÉçÇø Braves Group | Common Class C | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý |
| Targeted or Tracking Stock, Stock [Line Items] | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý |
| Number of subscription rights received for each share of common stock held | shares | Ìý | 0.47 | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý |
| Share Price | $ / shares | Ìý | Ìý | Ìý | $ 12.80 | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý |
| Percentage discount on stock subscriptions | Ìý | Ìý | Ìý | Ìý | 20 | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý |
| Pre rights offering trading period | Ìý | Ìý | Ìý | Ìý | 18 days | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý |
| Stock Issued During Period, Shares, Period Increase (Decrease) | shares | Ìý | Ìý | Ìý | 15,833,634 | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý |
| èßäÉçÇø Media Group | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý |
| Targeted or Tracking Stock, Stock [Line Items] | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý |
| Number of tracking stock shares received in the Recapitalization for one share of èßäÉçÇø Media common stock | shares | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | 0.25 | Ìý | Ìý | Ìý |
| Cash and cash equivalents | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | 220 | Ìý | Ìý | 76 | $ 404 | $ 522 |
| Outstanding principal | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | $ 1,481 | Ìý | Ìý | Ìý | Ìý | Ìý |
| èßäÉçÇø Braves Group | èßäÉçÇø Media Group | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý |
| Targeted or Tracking Stock, Stock [Line Items] | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý |
| Percentage ownership | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | 15.50% | Ìý | 20.00% | Ìý | Ìý | Ìý |
| Investment Owned, Balance, Shares | shares | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | 9,084,940 | Ìý | Ìý | Ìý | Ìý | Ìý |
| èßäÉçÇø Braves Group | èßäÉçÇø | Common Class C | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý |
| Targeted or Tracking Stock, Stock [Line Items] | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý |
| Investment Owned, Balance, Shares | shares | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | 9,084,940 | Ìý | Ìý | Ìý | Ìý | Ìý |
| Formula 1 | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý |
| Targeted or Tracking Stock, Stock [Line Items] | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý |
| Investment ownership percentage | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | 20.00% | Ìý | Ìý | Ìý | Ìý |
| Diluted investment ownership percentage | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | 19.10% | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý |
| Formula 1 | èßäÉçÇø Media Group | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý |
| Targeted or Tracking Stock, Stock [Line Items] | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý |
| Investment ownership percentage | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | 20.00% | Ìý | Ìý | Ìý | Ìý |
| Diluted investment ownership percentage | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | 19.10% | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý |
| Forecast | èßäÉçÇø Media Group | Common Class C | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý |
| Targeted or Tracking Stock, Stock [Line Items] | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý |
| Stock Issued During Period, Shares, Period Increase (Decrease) | shares | Ìý | Ìý | Ìý | Ìý | Ìý | 138,000,000 | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý |
| Forecast | Formula 1 | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý |
| Targeted or Tracking Stock, Stock [Line Items] | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý |
| Business Acquisition, Percentage of Voting Interests Acquired | Ìý | Ìý | Ìý | Ìý | Ìý | 100.00% | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý |
| Forecast | Formula 1 | èßäÉçÇø Media Group | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý |
| Targeted or Tracking Stock, Stock [Line Items] | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý |
| Business Acquisition, Percentage of Voting Interests Acquired | Ìý | Ìý | Ìý | Ìý | Ìý | 100.00% | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý |
| SIRIUS XM | èßäÉçÇø Sirius XM Group | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý |
| Targeted or Tracking Stock, Stock [Line Items] | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý |
| Cash and cash equivalents | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | $ 572 | Ìý | Ìý | Ìý | Ìý | Ìý |
| SIRIUS XM | Quarterly | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý |
| Targeted or Tracking Stock, Stock [Line Items] | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý |
| Common Stock, Dividends, Per Share, Declared | $ / shares | $ 0.01 | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý |
| SIRIUS XM | Annual | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý |
| Targeted or Tracking Stock, Stock [Line Items] | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý |
| Common Stock, Dividends, Per Share, Declared | $ / shares | $ 0.04 | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý |
| Intergroup note | èßäÉçÇø Braves Group | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý |
| Targeted or Tracking Stock, Stock [Line Items] | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý |
| Repayments of Lines of Credit | Ìý | Ìý | $ 150 | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý |
| Line of Credit Facility, Maximum Borrowing Capacity | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | $ 165 | Ìý | Ìý |