Long-Term Debt (Details) - USD ($)
$ in Millions |
Jun. 30, 2018 |
Dec. 31, 2017 |
| Debt Instrument [Line Items] |
Ìý
|
Ìý
|
| Outstanding principal |
$ 13,014
|
Ìý
|
| Total debt |
13,270
|
$ 13,954
|
| Debt classified as current |
(18)
|
(768)
|
| Total long-term debt |
13,252
|
13,186
|
| 2.125% Exchangeable Senior Debentures due 2048 |
Ìý
|
Ìý
|
| Debt Instrument [Line Items] |
Ìý
|
Ìý
|
| Outstanding principal |
400
|
Ìý
|
| Total debt |
$ 397
|
Ìý
|
| Debt instrument interest rate |
2.125%
|
Ìý
|
| Sirius XM 3.875% Senior Notes due 2022 |
Ìý
|
Ìý
|
| Debt Instrument [Line Items] |
Ìý
|
Ìý
|
| Debt instrument interest rate |
3.875%
|
Ìý
|
| Sirius X M 4.625 Senior Notes Due 2023 |
Ìý
|
Ìý
|
| Debt Instrument [Line Items] |
Ìý
|
Ìý
|
| Debt instrument interest rate |
4.625%
|
Ìý
|
| Sirius XM 6.00% Senior Notes Due 2024 |
Ìý
|
Ìý
|
| Debt Instrument [Line Items] |
Ìý
|
Ìý
|
| Debt instrument interest rate |
6.00%
|
Ìý
|
| Sirius XM 5.375% Senior Notes Due 2025 |
Ìý
|
Ìý
|
| Debt Instrument [Line Items] |
Ìý
|
Ìý
|
| Debt instrument interest rate |
5.375%
|
Ìý
|
| Sirius XM 5.375% Senior Notes due 2026 |
Ìý
|
Ìý
|
| Debt Instrument [Line Items] |
Ìý
|
Ìý
|
| Debt instrument interest rate |
5.375%
|
Ìý
|
| Sirius XM 5.0% Senior Notes due 2027 Member |
Ìý
|
Ìý
|
| Debt Instrument [Line Items] |
Ìý
|
Ìý
|
| Debt instrument interest rate |
5.00%
|
Ìý
|
| 1.375% Cash Convertible Senior Notes Due 2023 |
Ìý
|
Ìý
|
| Debt Instrument [Line Items] |
Ìý
|
Ìý
|
| Debt instrument interest rate |
1.375%
|
Ìý
|
| èßäÉçÇø 1% Cash Convertible Notes Due 2023 |
Ìý
|
Ìý
|
| Debt Instrument [Line Items] |
Ìý
|
Ìý
|
| Debt instrument interest rate |
1.00%
|
Ìý
|
| 2.25% Exchangeable Senior Debentures due 2046 |
Ìý
|
Ìý
|
| Debt Instrument [Line Items] |
Ìý
|
Ìý
|
| Debt instrument interest rate |
2.25%
|
Ìý
|
| èßäÉçÇø Sirius XM Group |
Ìý
|
Ìý
|
| Debt Instrument [Line Items] |
Ìý
|
Ìý
|
| Outstanding principal |
$ 7,358
|
Ìý
|
| Deferred financing costs, net |
(11)
|
(9)
|
| Total debt |
7,292
|
7,496
|
| Debt classified as current |
(4)
|
Ìý
|
| Total long-term debt |
7,288
|
Ìý
|
| èßäÉçÇø Sirius XM Group | Margin loan |
Ìý
|
Ìý
|
| Debt Instrument [Line Items] |
Ìý
|
Ìý
|
| Outstanding principal |
450
|
Ìý
|
| Total debt |
450
|
750
|
| èßäÉçÇø Sirius XM Group | Sirius XM 3.875% Senior Notes due 2022 |
Ìý
|
Ìý
|
| Debt Instrument [Line Items] |
Ìý
|
Ìý
|
| Outstanding principal |
1,000
|
Ìý
|
| Total debt |
993
|
992
|
| èßäÉçÇø Sirius XM Group | Sirius X M 4.625 Senior Notes Due 2023 |
Ìý
|
Ìý
|
| Debt Instrument [Line Items] |
Ìý
|
Ìý
|
| Outstanding principal |
500
|
Ìý
|
| Total debt |
497
|
497
|
| èßäÉçÇø Sirius XM Group | Sirius XM 6.00% Senior Notes Due 2024 |
Ìý
|
Ìý
|
| Debt Instrument [Line Items] |
Ìý
|
Ìý
|
| Outstanding principal |
1,500
|
Ìý
|
| Total debt |
1,489
|
1,488
|
| èßäÉçÇø Sirius XM Group | Sirius XM 5.375% Senior Notes Due 2025 |
Ìý
|
Ìý
|
| Debt Instrument [Line Items] |
Ìý
|
Ìý
|
| Outstanding principal |
1,000
|
Ìý
|
| Total debt |
992
|
991
|
| èßäÉçÇø Sirius XM Group | Sirius XM 5.375% Senior Notes due 2026 |
Ìý
|
Ìý
|
| Debt Instrument [Line Items] |
Ìý
|
Ìý
|
| Outstanding principal |
1,000
|
Ìý
|
| Total debt |
990
|
990
|
| èßäÉçÇø Sirius XM Group | Sirius XM 5.0% Senior Notes due 2027 Member |
Ìý
|
Ìý
|
| Debt Instrument [Line Items] |
Ìý
|
Ìý
|
| Outstanding principal |
1,500
|
Ìý
|
| Total debt |
1,487
|
1,486
|
| èßäÉçÇø Sirius XM Group | Sirius XM Senior Secured Revolving Credit Facility |
Ìý
|
Ìý
|
| Debt Instrument [Line Items] |
Ìý
|
Ìý
|
| Total debt |
Ìý
|
300
|
| èßäÉçÇø Sirius XM Group | Sirius XM leases |
Ìý
|
Ìý
|
| Debt Instrument [Line Items] |
Ìý
|
Ìý
|
| Outstanding principal |
8
|
Ìý
|
| Total debt |
8
|
11
|
| Braves Group |
Ìý
|
Ìý
|
| Debt Instrument [Line Items] |
Ìý
|
Ìý
|
| Outstanding principal |
629
|
Ìý
|
| Deferred financing costs, net |
(4)
|
(5)
|
| Total debt |
625
|
662
|
| Debt classified as current |
(14)
|
Ìý
|
| Total long-term debt |
611
|
Ìý
|
| Braves Group | Notes and loans |
Ìý
|
Ìý
|
| Debt Instrument [Line Items] |
Ìý
|
Ìý
|
| Outstanding principal |
629
|
Ìý
|
| Total debt |
629
|
667
|
| Formula One Group |
Ìý
|
Ìý
|
| Debt Instrument [Line Items] |
Ìý
|
Ìý
|
| Outstanding principal |
5,027
|
Ìý
|
| Deferred financing costs, net |
(21)
|
(18)
|
| Total debt |
5,353
|
5,796
|
| Total long-term debt |
5,353
|
Ìý
|
| Formula One Group | 1.375% Cash Convertible Senior Notes Due 2023 |
Ìý
|
Ìý
|
| Debt Instrument [Line Items] |
Ìý
|
Ìý
|
| Outstanding principal |
1,000
|
Ìý
|
| Total debt |
1,244
|
1,146
|
| Formula One Group | èßäÉçÇø 1% Cash Convertible Notes Due 2023 |
Ìý
|
Ìý
|
| Debt Instrument [Line Items] |
Ìý
|
Ìý
|
| Outstanding principal |
450
|
Ìý
|
| Total debt |
526
|
505
|
| Formula One Group | 2.25% Exchangeable Senior Debentures due 2046 |
Ìý
|
Ìý
|
| Debt Instrument [Line Items] |
Ìý
|
Ìý
|
| Outstanding principal |
216
|
Ìý
|
| Total debt |
234
|
464
|
| Formula One Group | Live Nation Margin Loan |
Ìý
|
Ìý
|
| Debt Instrument [Line Items] |
Ìý
|
Ìý
|
| Outstanding principal |
350
|
Ìý
|
| Total debt |
350
|
350
|
| Formula One Group | Other Debt Obligations |
Ìý
|
Ìý
|
| Debt Instrument [Line Items] |
Ìý
|
Ìý
|
| Outstanding principal |
34
|
Ìý
|
| Total debt |
34
|
35
|
| Formula One Group | Senior Loan Facility |
Ìý
|
Ìý
|
| Debt Instrument [Line Items] |
Ìý
|
Ìý
|