Benefit Plans - Sirius XM Holdings Inc. Deferred Compensation Plan (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Retirement Benefits [Abstract]
Net contributions	$ 1
Contributions (withdrawals)		$ (1)
Fair value of investment assets related to deferred compensation plan	51		$ 47
Gains (losses) on investments	$ 2	$ (3)

Deferred Compensation Arrangement with Individual, Contributions by Employer, Net Of Withdrawals

No definition available.

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- Definition

Deferred Compensation Arrangement with Individual, Gain (Loss) on Investment

+ References

No definition available.

+ Details

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- References

No definition available.

+ Details

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- Definition

Amount of contributions made by employer into fund established for purposes of making future disbursement to individual in accordance with deferred compensation arrangement.

+ References

No definition available.

+ Details

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- Definition

Carrying amount as of the balance sheet date of assets held under deferred compensation agreements.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(17))
-URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

+ Details

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