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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Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- 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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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

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

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Balance Type:	na
Period Type:	instant

- 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
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
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.

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- Definition

Gross amount of debt extinguished.

+ References

No definition available.

+ Details

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- Definition

Amount of cash paid for interest, excluding capitalized interest, classified as operating activity. Includes, but is not limited to, payment to settle zero-coupon bond for accreted interest of debt discount and debt instrument with insignificant coupon interest rate in relation to effective interest rate of borrowing attributable to accreted interest of debt discount.

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Balance Type:	credit
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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+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- 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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Balance Type:	na
Period Type:	duration

- Definition

Indebtedness divided by net capital.

+ References

No definition available.

+ Details

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Period Type:	instant

- Definition

Amount of cash outflow for short-term and long-term debt. Excludes payment of lease obligation.

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- Details

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- Details

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- Details

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- Details

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- Details

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- Details

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Debt - Narrative (Details)			3 Months Ended
Debt - Narrative (Details)	Apr. 17, 2026 USD ($)	Apr. 15, 2026 USD ($)	Mar. 31, 2026 USD ($) extension_term	Mar. 31, 2025 USD ($)	Dec. 31, 2025 USD ($)
Debt Instrument [Line Items]
Repayments of debt			$ 0	$ 436,000,000
Interest paid, net of capitalized interest			100,000,000	91,000,000
Secured Debt
Debt Instrument [Line Items]
Outstanding borrowings			$ 0
Credit Facility \| Credit Facility
Debt Instrument [Line Items]
Debt instrument extension term \| extension_term			2
Debt instrument, term			1 year
Maximum borrowing capacity			$ 3,500,000,000
Unused borrowing capacity			$ 3,500,000,000
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
Variable rate percentage			2.00%
Unused capacity, commitment fee percentage			0.325%
Credit Facility \| Credit Facility \| Maximum \| SOFR
Debt Instrument [Line Items]
Variable rate percentage			1.00%
Credit Facility \| Credit Facility \| Minimum
Debt Instrument [Line Items]
Variable rate percentage			1.125%
Unused capacity, commitment fee percentage			0.125%
Credit Facility \| Credit Facility \| Minimum \| SOFR
Debt Instrument [Line Items]
Variable rate percentage			0.125%
Credit Facility \| Credit Facility \| Scenario, Plan
Debt Instrument [Line Items]
Increase in maximum borrowing capacity			$ 1,000,000,000.0
Credit Facility \| Credit Facility \| Letter of Credit
Debt Instrument [Line Items]
Maximum borrowing capacity			1,000,000,000.0
Credit Facility \| Credit Facility \| Swingline Loans
Debt Instrument [Line Items]
Maximum borrowing capacity			100,000,000
4.95% senior notes due 2025 \| Senior Notes
Debt Instrument [Line Items]
Extinguishment of debt				$ 389,000,000
Interest rate, stated percentage				4.95%
5.50% senior notes due 2026 \| Senior Notes
Debt Instrument [Line Items]
Extinguishment of debt				$ 47,000,000
Interest rate, stated percentage				5.50%
6.75% senior notes due 2029 \| Senior Notes
Debt Instrument [Line Items]
Outstanding borrowings			$ 847,000,000		$ 847,000,000
Interest rate, stated percentage			6.75%
6.75% senior notes due 2029 \| Senior Notes \| Subsequent Event
Debt Instrument [Line Items]
Extinguishment of debt		$ 847,000,000
Interest rate, stated percentage		6.75%
Repayments of debt		$ 875,000,000
Interest paid, net of capitalized interest		$ 28,000,000
5.875% senior notes due 2029 \| Senior Notes
Debt Instrument [Line Items]
Outstanding borrowings			$ 440,000,000		$ 440,000,000
Interest rate, stated percentage			5.875%
5.875% senior notes due 2029 \| Senior Notes \| Subsequent Event
Debt Instrument [Line Items]
Extinguishment of debt	$ 440,000,000
Interest rate, stated percentage	5.875%
Repayments of debt	$ 446,000,000
Interest paid, net of capitalized interest	$ 6,000,000