XML 100 R87.htm IDEA: XBRL DOCUMENT
v3.22.0.1

Benefit Plans - 401(k) Savings Plan (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Sirius XM Savings Plan |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Minimum of employee contributions of pre-tax eligible earnings to company 401(k) savings plan | 1.00% |  |
Maximum of employee contributions of pre-tax eligible earnings to company 401(k) savings plan | 50.00% |  |
Percent of Company match of employee's voluntary contributions | 50.00% |  |
Percent of employee's pre-tax salary | 6.00% |  |
Maximum annual contributions per employee, percent | 3.00% |  |
Vesting percentage of employer contributions for each year of employment | 33.33% |  |
Savings plan, fully vested period | 3 years |  |
Pandora Plan |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Recognized cost | $ 21 | $ 16 | $ 9

X
- Definition Employees contribution of their pretax earnings to subsidiary plan maximum. + References No definition available. + Details
Name: | siri_DefinedContributionPlanEmployeesContributionOfTheirPretaxEarningsToSubsidiaryPlanMaximum
Namespace Prefix: | siri_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Employees contribution of their pretax earnings to subsidiary plan minimum. + References No definition available. + Details
Name: | siri_DefinedContributionPlanEmployeesContributionOfTheirPretaxEarningsToSubsidiaryPlanMinimum
Namespace Prefix: | siri_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Defined contribution plan, fully vested period. + References No definition available. + Details
Name: | siri_DefinedContributionPlanFullyVestedPeriod
Namespace Prefix: | siri_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_DefinedBenefitPlanDisclosureLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of cost for defined contribution plan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 70 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=49170846&loc=d3e28014-114942 + Details
Name: | us-gaap_DefinedContributionPlanCostRecognized
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Percentage of employees' gross pay for which the employer contributes a matching contribution to a defined contribution plan. + References No definition available. + Details
Name: | us-gaap_DefinedContributionPlanEmployerMatchingContributionPercent
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Percentage employer matches of the employee's percentage contribution matched. + References No definition available. + Details
Name: | us-gaap_DefinedContributionPlanEmployerMatchingContributionPercentOfMatch
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Percentage of employer's matching contributions to a defined contribution plan that vests in a given year. + References No definition available. + Details
Name: | us-gaap_DefinedContributionPlanEmployersMatchingContributionAnnualVestingPercentage
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Maximum percentage of employee gross pay the employee may contribute to a defined contribution plan. + References No definition available. + Details
Name: | us-gaap_DefinedContributionPlanMaximumAnnualContributionsPerEmployeePercent
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_RetirementPlanNameAxis=siri_SiriusXmPlanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RetirementPlanNameAxis=siri_PandoraPlanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |