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Business Combination, Consideration Transferred, Equity Interests Issued And Issuable, Common Stock And Replacement Equity Awards Attributable To Pre-Combination Service

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Business Combination, Consideration Transferred, Equity Interests Issued And Issuable, Common Stock Conversion Ratio

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Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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Amount of assets, excluding financial assets and goodwill, that lack physical substance, having a projected indefinite period of benefit, acquired at the acquisition date.

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The amount of identifiable intangible assets recognized as of the acquisition date.

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The cash inflow associated with the acquisition of business during the period (for example, cash that was held by the acquired business).

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Acquisition (Details) $ in Millions		3 Months Ended
Acquisition (Details) $ in Millions	Feb. 01, 2019 USD ($)	Mar. 31, 2019 USD ($)	Mar. 31, 2018 USD ($)	Feb. 14, 2019	Dec. 31, 2018 USD ($)
Business Acquisition [Line Items]
Cash received from Pandora Acquisition		$ 313	$ 0
Goodwill		3,831			$ 2,290
Pandora
Business Acquisition [Line Items]
Consideration of common stock and replacement equity awards for pre-combination service	$ 2,355
Purchase price	$ 2,879
Exchange ratio (in shares per share)	1.44
Sirius XM’s Pandora preferred stock investment (related party fair value instrument) canceled	$ 524
Cash received from Pandora Acquisition	313
Goodwill	$ 1,541
Finite-lived intangible assets		776
Gross operating loss carryforwards		$ 1,199
Customer Relationships \| Pandora
Business Acquisition [Line Items]
Weighted Average Useful Lives		8 years
Software and technology \| Pandora
Business Acquisition [Line Items]
Weighted Average Useful Lives		5 years
Senior Notes \| 1.75% Senior Notes Due 2020
Business Acquisition [Line Items]
Stated interest rate (as a percent)		1.75%
Senior Notes \| 1.75% Senior Notes Due 2020 \| Pandora
Business Acquisition [Line Items]
Stated interest rate (as a percent)		1.75%		1.75%
Senior Notes \| 1.75% Senior Notes Due 2023
Business Acquisition [Line Items]
Stated interest rate (as a percent)		1.75%
Trademarks \| Pandora
Business Acquisition [Line Items]
Fair value of acquired trademarks		$ 331