Long-term Debt (Details) - USD ($) $ in Millions	6 Months Ended
Jun. 30, 2026	Dec. 31, 2025
Line of Credit Facility [Line Items]
Current borrowing capacity	$ 750
Maximum borrowing capacity	$ 800
Percentage Of Subsidiary Stock Securing Debt	100.00%
Long-term debt	$ 419	$ 369
Letters of Credit Outstanding, Amount	1
Line of Credit Facility, Remaining Borrowing Capacity	$ 330
Long-Term Debt, Maturity Date	Dec. 15, 2028
Applicable Margin Federal Funds Rate	0.50%
Adjusted Term SOFR Rate Plus Applicable Margin	2.00%
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage	0.25%
Line of Credit Facility, Interest Rate During Period	5.70%
Base Rate [Member] \| Minimum [Member]
Line of Credit Facility [Line Items]
Debt Instrument, Basis Spread on Variable Rate	0.50%
Base Rate [Member] \| Maximum [Member]
Line of Credit Facility [Line Items]
Debt Instrument, Basis Spread on Variable Rate	1.50%
Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate \| Minimum [Member]
Line of Credit Facility [Line Items]
Debt Instrument, Basis Spread on Variable Rate	1.50%
Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate \| Maximum [Member]
Line of Credit Facility [Line Items]
Debt Instrument, Basis Spread on Variable Rate	2.50%

Adjusted Term SOFR Rate Plus Applicable Margin

No definition available.

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- Definition

Applicable margin to the federal funds rate for alternate base rate borrowings.

+ References

No definition available.

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- Definition

Percentage of subsidiary stock securing debt per debt agreements.

+ References

No definition available.

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- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

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- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

+ References

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- Definition

Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility.

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- Definition

The effective interest rate during the reporting period.

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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.

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- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

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- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

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- Definition

The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility.

+ References

No definition available.

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- Definition

Maturity date of long-term debt, in YYYY-MM-DD format.

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- Definition

Amount, after deduction of unamortized premium (discount) and debt issuance cost, of long-term debt classified as noncurrent. Excludes lease obligation.

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