XML 84 R73.htm IDEA: XBRL DOCUMENT
v3.20.2

Benefit Plans - Other Plans (Details) | 6 Months Ended
--- | ---
Jun. 30, 2020 plan
Retirement Benefits [Abstract] |
Number of other share-based benefit plans | 6

X
- Definition Share-based compensation arrangement by share-based payment award, number of share-based benefit plans. + References No definition available. + Details
Name: | siri_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfShareBasedBenefitPlans
Namespace Prefix: | siri_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_CompensationAndRetirementDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration