Sirius XM Holdings Inc. Quarterly report [Sections 13 or 15(d)]

Benefit Plans - Schedule of Share Based Payment Expense (Details)

Benefit Plans - Schedule of Share Based Payment Expense (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2026	Sep. 30, 2025	Sep. 30, 2026	Sep. 30, 2025
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Share-based payment expense	$ 38	$ 42	$ 140	$ 140
Income Statement Location [Axis]: us-gaap:CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Share-based payment expense	10	11	38	37
Income Statement Location [Axis]: us-gaap:CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization \| Programming and content
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Share-based payment expense	7	9	29	28
Income Statement Location [Axis]: us-gaap:CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization \| Customer service and billing
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Share-based payment expense	1	1	4	4
Income Statement Location [Axis]: us-gaap:CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization \| Transmission
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Share-based payment expense	2	1	5	5
Income Statement Location [Axis]: us-gaap:GeneralAndAdministrativeExpense
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Share-based payment expense	10	13	42	41
Income Statement Location [Axis]: us-gaap:ResearchAndDevelopmentExpense
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Share-based payment expense	8	8	27	26
Income Statement Location [Axis]: us-gaap:SellingAndMarketingExpense
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Share-based payment expense	$ 10	$ 10	$ 33	$ 36