Cash, Cash Equivalents, Restricted Cash, Excluding Held-For-Sale

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- Definition

Amount of cash and cash equivalent. Cash includes, but is not limited to, currency on hand, demand deposit with financial institution, and account with general characteristic of demand deposit. Cash equivalent includes, but is not limited to, short-term, highly liquid investment that is both readily convertible to known amount of cash and so near maturity that it presents insignificant risk of change in value because of change in interest rate.

+ References

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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.

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- Definition

Nominal number of units used to calculate payment on derivative.

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Amount of cash and cash equivalent restricted as to withdrawal or usage, classified as current. Cash includes, but is not limited to, currency on hand, demand deposit with financial institution, and account with general characteristic of demand deposit. Cash equivalent includes, but is not limited to, short-term, highly liquid investment that is both readily convertible to known amount of cash and so near maturity that it presents insignificant risk of change in value because of change in interest rate.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
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Summary of Significant Accounting Policies and Other Matters - Reconciliation of Cash, Temporary Investments and Restricted Cash (Details) $ in Millions	Sep. 30, 2025 USD ($) MWh	Dec. 31, 2024 USD ($)	Sep. 30, 2024 USD ($) MWh	Mar. 01, 2023 MWh
Cash and Cash Equivalents [Line Items]
Cash and temporary cash investments	$ 181	$ 1,324	$ 93
Restricted cash	1		9
Total cash, temporary cash investments and restricted cash	$ 182		$ 102
Electric Energy (MWh)
Cash and Cash Equivalents [Line Items]
Notional amount \| MWh	31,734,340
Broken Bow II \| Electric Energy (MWh) \| Clean Energy Businesses
Cash and Cash Equivalents [Line Items]
Notional amount \| MWh			75	75