Debt Instrument, Extension Term

No definition available.

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Namespace Prefix:	exe_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Line of Credit Facility, Increase in Maximum Borrowing Capacity

+ References

No definition available.

+ Details

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Namespace Prefix:	exe_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

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

+ References

No definition available.

+ Details

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- Definition

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

+ References

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Balance Type:	credit
Period Type:	instant

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ 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.

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+ Details

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- Definition

Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentTerm
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Balance Type:	na
Period Type:	duration

- Definition

Amount of unused borrowing capacity under the long-term financing arrangement that is available to the entity as of the balance sheet date.

+ References

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Balance Type:	credit
Period Type:	instant

- Definition

Gross amount of debt extinguished.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- 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.

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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.

+ Details

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- Definition

Indebtedness divided by net capital.

+ References

No definition available.

+ Details

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Debt - Narrative (Details)		1 Months Ended		9 Months Ended
Debt - Narrative (Details)	Sep. 30, 2025 USD ($) extension_term	Mar. 31, 2025 USD ($)	Jan. 31, 2025 USD ($)	Sep. 30, 2025 USD ($)	Dec. 31, 2024 USD ($)
Secured Debt
Debt Instrument [Line Items]
Outstanding borrowings	$ 0			$ 0
Revolving Credit Facility \| Credit Facility
Debt Instrument [Line Items]
Maximum borrowing capacity	3,500,000,000			3,500,000,000	$ 2,500,000,000
Unused borrowing capacity	3,500,000,000			3,500,000,000
Revolving Credit Facility \| Credit Facility \| Scenario, Plan
Debt Instrument [Line Items]
Increase in maximum borrowing capacity	1,000,000,000			$ 1,000,000,000
Revolving Credit Facility \| Credit Facility \| Maximum
Debt Instrument [Line Items]
Variable rate percentage				2.00%
Unused capacity, commitment fee percentage				0.325%
Revolving Credit Facility \| Credit Facility \| Minimum
Debt Instrument [Line Items]
Variable rate percentage				1.125%
Unused capacity, commitment fee percentage				0.125%
Revolving Credit Facility \| Credit Facility \| Letter of Credit
Debt Instrument [Line Items]
Maximum borrowing capacity	1,000,000,000			$ 1,000,000,000	500,000,000
Revolving Credit Facility \| Credit Facility \| Swingline Loans
Debt Instrument [Line Items]
Maximum borrowing capacity	$ 100,000,000			$ 100,000,000	50,000,000
Credit Facility \| Credit Facility
Debt Instrument [Line Items]
Debt instrument extension term \| extension_term	2
Debt instrument, term	1 year
Credit Facility \| Credit Facility \| Federal Funds Effective Rate
Debt Instrument [Line Items]
Variable rate percentage				0.50%
Credit Facility \| Credit Facility \| SOFR
Debt Instrument [Line Items]
Variable rate percentage				1.00%
Credit Facility \| Credit Facility \| Maximum
Debt Instrument [Line Items]
Ratio of indebtedness to net capital	0.65			0.65
Credit Facility \| Credit Facility \| Maximum \| SOFR
Debt Instrument [Line Items]
Variable rate percentage				1.00%
Credit Facility \| Credit Facility \| Minimum \| SOFR
Debt Instrument [Line Items]
Variable rate percentage				0.125%
4.95% senior notes due 2025 \| Senior Notes
Debt Instrument [Line Items]
Outstanding borrowings	$ 0			$ 0	389,000,000
Extinguishment of debt			$ 389,000,000
Interest rate, stated percentage	4.95%		4.95%	4.95%
5.50% senior notes due 2026 \| Senior Notes
Debt Instrument [Line Items]
Outstanding borrowings	$ 0			$ 0	47,000,000
Extinguishment of debt		$ 47,000,000
Interest rate, stated percentage	5.50%	5.50%		5.50%
6.75% senior notes due 2029 \| Senior Notes
Debt Instrument [Line Items]
Outstanding borrowings	$ 847,000,000			$ 847,000,000	950,000,000
Extinguishment of debt				$ 103,000,000
Interest rate, stated percentage	6.75%			6.75%
5.875% senior notes due 2029 \| Senior Notes
Debt Instrument [Line Items]
Outstanding borrowings	$ 440,000,000			$ 440,000,000	500,000,000
Extinguishment of debt				$ 60,000,000
Interest rate, stated percentage	5.875%			5.875%
5.375% senior notes due 2029 \| Senior Notes
Debt Instrument [Line Items]
Outstanding borrowings	$ 638,000,000			$ 638,000,000	$ 700,000,000
Extinguishment of debt				$ 62,000,000
Interest rate, stated percentage	5.375%			5.375%