Investments In Affiliates Accounted For Using The Equity Method - Sirius XM Canada (Details) $ / shares in Units, shares in Millions, $ in Millions, $ in Millions |
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3 Months Ended |
9 Months Ended |
12 Months Ended |
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May 25, 2017
CAD ($)
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Sep. 30, 2018
USD ($)
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Sep. 30, 2017
USD ($)
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Sep. 30, 2018
USD ($)
item
shares
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Sep. 30, 2017
USD ($)
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Dec. 31, 2017
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shares
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Sep. 30, 2018
$ / shares
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Sep. 30, 2018
USD ($)
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Jan. 01, 2018
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May 25, 2017
USD ($)
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Schedule of Equity Method Investments [Line Items] |
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Deferred revenue |
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$ 1,941
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$ 2,235
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$ 1,899
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Repayments of debt |
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$ 3,014
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$ 4,819
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SIRIUS XM |
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Schedule of Equity Method Investments [Line Items] |
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Due to Related Parties, Current |
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4
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Due to Related Parties, Noncurrent |
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6
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Due from Related Parties, Current |
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$ 10
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SEC Schedule, 12-04, Cash Dividends Paid to Registrant, Subsidiaries and Equity Method Investees |
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104
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SIRIUS XM | Sirius XM Canada |
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Schedule of Equity Method Investments [Line Items] |
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Revenue from Related Parties |
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$ 25
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$ 23
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$ 72
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63
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Percentage ownership |
70.00%
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70.00%
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Equity Method Investment Voting Interest |
33.00%
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Payments to Acquire Equity Method Investments |
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130
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Equity method investment consideration transferred |
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$ 309
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Issuance of common stock related to investment in Sirius XM Canada (in shares) | shares |
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35
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Equity method investment, consideration transferred, equity interests issued and issuable |
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$ 179
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Equity Method Investment, Number of Preferred Shares Owned | shares |
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591
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SIRIUS XM | Sirius XM Canada | Services Agreement |
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Schedule of Equity Method Investments [Line Items] |
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Related Party Transaction, Period Of Agreement |
30 years
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SIRIUS XM | Sirius XM Canada | Services Agreement, Years 1 through 5 |
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Schedule of Equity Method Investments [Line Items] |
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Related Party Transaction, Payments Receivable, Percent of Gross Revenue |
25.00%
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SIRIUS XM | Sirius XM Canada | Services Agreement, Years 6 through 30 |
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Schedule of Equity Method Investments [Line Items] |
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Related Party Transaction, Payments Receivable, Percent of Gross Revenue |
30.00%
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SIRIUS XM | Sirius XM Canada | Advisory Services Agreement |
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Schedule of Equity Method Investments [Line Items] |
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Related Party Transaction, Period Of Agreement |
30 years
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Related Party Transaction, Payments Receivable, Percent of Gross Revenue |
5.00%
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SIRIUS XM | Sirius XM Canada | Related Party 7.62% Loan |
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Schedule of Equity Method Investments [Line Items] |
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Notes Receivable, Related Parties, Noncurrent |
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$ 131
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Notes receivable, related parties, maturity period |
15 years
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Related Party Transaction, Rate |
7.62%
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Notes Receivable, Related Parties, Annual Principal Repayment Period |
60 days
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Notes Receivable, Related Parties, Annual Prepayment Excess Cash Threshold |
$ 10
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Sirius XM Canada |
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Schedule of Equity Method Investments [Line Items] |
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Number of previous shareholders who hold remainder of voting power | item |
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2
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SEC Schedule, 12-04, Cash Dividends Paid to Registrant, Subsidiaries and Equity Method Investees |
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$ 2
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$ 4
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Preferred Stock, Liquidation Preference Per Share | $ / shares |
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$ 1
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Sirius XM Canada | Related Party 7.62% Loan |
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Schedule of Equity Method Investments [Line Items] |
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Repayments of debt |
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$ 3
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