XML 92 R80.htm IDEA: XBRL DOCUMENT
v3.25.2

Stockholder's Equity - Narrative (Details) $ in Millions | 1 Months Ended | 6 Months Ended
--- | --- | ---
Dec. 31, 2024 USD ($) | Mar. 31, 2024 USD ($) member Rate | Jun. 30, 2025 USD ($) Rate | Jun. 30, 2024 USD ($)
Equity, Class of Treasury Stock [Line Items] |  |  |  |
Percentage of common stock purchased | Rate |  |  | 23.00% |
Stock repurchased, excluding excise tax |  |  | $ 2,000 |
Shares approved for repurchase, amount | $ 850 |  |  |
Share repurchase program, remaining authorized amount |  |  | 995 |
Number of former members, equity units acquired | member |  | 2 |  |
Repurchase of noncontrolling interest |  |  | $ 0 | $ 39
Cumulus Digital Holdings LLC |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |
Repurchase of noncontrolling interest |  | $ 39 |  |
Ownership percentage | Rate |  | 100.00% |  |

X
- Definition Number Of Former Members, Equity Units Acquired + References No definition available. + Details
Name: | tln_NumberOfFormerMembersEquityUnitsAcquired
Namespace Prefix: | tln_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Shares Authorized For Repurchase, Amount + References No definition available. + Details
Name: | tln_SharesAuthorizedForRepurchaseAmount
Namespace Prefix: | tln_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Common Stock Purchased, Percentage Of Total Outstanding + References No definition available. + Details
Name: | tln_TreasuryStockPercentageAcquiredCostMethod
Namespace Prefix: | tln_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Treasury Stock, Value, Acquired, Excluding Excise Tax, Cost Method + References No definition available. + Details
Name: | tln_TreasuryStockValueAcquiredExcludingExciseTaxCostMethod
Namespace Prefix: | tln_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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_EquityClassOfTreasuryStockLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The parent entity's interest in net assets of the subsidiary, expressed as a percentage. + References No definition available. + Details
Name: | us-gaap_MinorityInterestOwnershipPercentageByParent
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Amount of cash outflow to a noncontrolling interest. Includes, but not limited to, reduction of noncontrolling interest ownership. Excludes dividends paid to the noncontrolling interest. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482740/230-10-45-15 + Details
Name: | us-gaap_PaymentsToMinorityShareholders
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount remaining authorized for purchase of share under share repurchase plan. Includes, but is not limited to, repurchase of stock and unit of ownership. + 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: | srt_OwnershipAxis=tln_CumulusDigitalHoldingsLLCMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |