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Property and Equipment - Schedule of Estimated Useful Life (Details) | 12 Months Ended
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Dec. 31, 2021
Satellite system |
Property, Plant and Equipment [Line Items] |
Property, plant and equipment, useful life | 15 years
Terrestrial repeater network | Minimum |
Property, Plant and Equipment [Line Items] |
Property, plant and equipment, useful life | 5 years
Terrestrial repeater network | Maximum |
Property, Plant and Equipment [Line Items] |
Property, plant and equipment, useful life | 15 years
Broadcast studio equipment | Minimum |
Property, Plant and Equipment [Line Items] |
Property, plant and equipment, useful life | 3 years
Broadcast studio equipment | Maximum |
Property, Plant and Equipment [Line Items] |
Property, plant and equipment, useful life | 15 years
Capitalized software and hardware | Minimum |
Property, Plant and Equipment [Line Items] |
Property, plant and equipment, useful life | 2 years
Capitalized software and hardware | Maximum |
Property, Plant and Equipment [Line Items] |
Property, plant and equipment, useful life | 7 years
Satellite telemetry, tracking and control facilities | Minimum |
Property, Plant and Equipment [Line Items] |
Property, plant and equipment, useful life | 3 years
Satellite telemetry, tracking and control facilities | Maximum |
Property, Plant and Equipment [Line Items] |
Property, plant and equipment, useful life | 15 years
Furniture, fixtures, equipment and other | Minimum |
Property, Plant and Equipment [Line Items] |
Property, plant and equipment, useful life | 2 years
Furniture, fixtures, equipment and other | Maximum |
Property, Plant and Equipment [Line Items] |
Property, plant and equipment, useful life | 7 years
Building | Minimum |
Property, Plant and Equipment [Line Items] |
Property, plant and equipment, useful life | 20 years
Building | Maximum |
Property, Plant and Equipment [Line Items] |
Property, plant and equipment, useful life | 30 years

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- 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_PropertyPlantAndEquipmentLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=siri_TerrestrialRepeaterNetworkMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=siri_SatelliteTelemetryTrackingAndControlFacilitiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_FurnitureAndFixturesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_BuildingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
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