XML 77 R68.htm IDEA: XBRL DOCUMENT
v3.20.2

Stockholders' Equity - Stock Repurchase Program (Details) shares in Millions | Sep. 30, 2020 USD ($) shares
--- | ---
Class of Stock [Line Items] |
Number of shares repurchased (in shares) | shares | 3,203
Aggregate cost for shares repurchased | $ 13,728,000,000
Remaining amount authorized under the stock repurchase program | 2,272,000,000
Common Stock |
Class of Stock [Line Items] |
Stock repurchase program, aggregate authorized amount | $ 16,000,000,000

X
- Definition Share repurchase program, shares repurchased cost. + References No definition available. + Details
Name: | siri_ShareRepurchaseProgramSharesRepurchasedCost
Namespace Prefix: | siri_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Stock repurchase program, number of shares repurchased. + References No definition available. + Details
Name: | siri_StockRepurchaseProgramNumberOfSharesRepurchased
Namespace Prefix: | siri_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

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

X
- Definition Amount of stock repurchase plan authorized. + References No definition available. + Details
Name: | us-gaap_StockRepurchaseProgramAuthorizedAmount1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount remaining of a stock repurchase plan authorized. + References No definition available. + Details
Name: | us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | us-gaap_StatementEquityComponentsAxis=us-gaap_CommonStockMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |