Sirius XM Holdings Inc. Annual report pursuant to Section 13 and 15(d)

Annual report pursuant to Section 13 and 15(d)

Cover
- Document and Entity Information
Financial Statements
Notes to Financial Statements
Accounting Policies
- Summary of Significant Accounting Policies (Policies)
Notes Tables
Notes Details

Related Party Transactions - Pandora (Details)

v3.10.0.1

Related Party Transactions - Pandora (Details) - USD ($) $ / shares in Units, $ in Thousands			6 Months Ended	12 Months Ended
	Sep. 23, 2018	Sep. 22, 2017	Mar. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Related Party Transaction [Line Items]
Investment in convertible preferred stock				$ 16,833	$ 612,465	$ 0
Preferred stock, par value (in dollars per share)				$ 0.001
Agreement to Acquire Pandora, Inc.
Common stock, par value (in dollars per share)	$ 0.001			$ 0.001	$ 0.001
Pandora \| Forecast
Agreement to Acquire Pandora, Inc.
Shares issuable per acquiree share (in shares)			1.44
Pandora \| Performance-based Share Awards \| Maximum
Agreement to Acquire Pandora, Inc.
Consideration transferred, per share	20.00
Pandora
Related Party Transaction [Line Items]
Fair value of investment				$ 523,089	$ 480,472
Pandora \| Level 2
Related Party Transaction [Line Items]
Fair value of investment				$ 523,089	480,472
Pandora
Agreement to Acquire Pandora, Inc.
Common stock, par value (in dollars per share)	$ 0.0001
Pandora \| Series A Preferred Stock
Related Party Transaction [Line Items]
Number of shares issued (in shares)		480,000
Investee \| Pandora
Related Party Transaction [Line Items]
Investment in convertible preferred stock		$ 480,000
Investment ownership percentage				18.00%
Ownership percentage on an as-converted basis				15.00%
Accrued dividends				$ 40,969
Unrealized gain (loss) on investment				$ 42,617	$ 472
Investee \| Pandora \| Series A Preferred Stock
Related Party Transaction [Line Items]
Preferred stock, par value (in dollars per share)		$ 0.0001
Price per share (in dollars per share)				$ 10.50
Common shares issued upon conversion (in shares)				95.2381
Preferred stock dividend rate, percentage				6.00%
Liquidation preference				$ 520,969

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