Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay, Annual

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- Definition

Minimum Number Of Years Of Service For Certain Employees To Be Eligible To Participate In Welfare Plans That Provide Postretirement Medical And Life Insurance Benefits

+ References

No definition available.

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- Definition

Number of Defined Benefit Pension Plans

+ References

No definition available.

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- Definition

Amount, after tax, of accumulated other comprehensive (income) loss for defined benefit plan, that has not been recognized in net periodic benefit cost (credit).

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- Definition

Amount of actuarial present value of benefits attributed to employee service rendered, excluding assumptions about future compensation level.

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- Definition

Amount of payment to participant of defined benefit plan which decreases benefit obligation. For pension plan, payment includes, but is not limited to, pension benefits and death benefits. For other postretirement plan, payment includes, but is not limited to, prescription drug benefits, health care benefits, life insurance benefits, and legal, educational and advisory services.

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- Definition

Amount of contribution received by defined benefit plan from employer which increases plan assets.

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- Definition

Amount of cost for defined contribution plan.

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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

Percentage of employees' gross pay for which the employer contributes a matching contribution to a defined contribution plan.

+ References

No definition available.

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- Definition

Percentage employer matches of the employee's percentage contribution matched.

+ References

No definition available.

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EMPLOYEE BENEFIT PLANS - Narrative (Details)		1 Months Ended	12 Months Ended
EMPLOYEE BENEFIT PLANS - Narrative (Details)	Jan. 01, 2025	Jan. 31, 2024 USD ($)	Dec. 31, 2024 USD ($) pensionPlan	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)
Defined Contribution Plan Disclosure [Line Items]
Number of defined benefit pension plans \| pensionPlan			2
AOCI, defined benefit plan, after tax			$ (58,000,000)	$ (64,000,000)
Annual discretionary contributions (as a percent)			2.00%
401(k) Plan
Defined Contribution Plan Disclosure [Line Items]
Percent of employee matched of eligible compensation (as a percent)			100.00%
Percentage of each participants eligible compensation (as a percent)			6.00%
Contributions made to the plan			$ 66,000,000	44,000,000	$ 35,000,000
Profit-sharing contribution
Defined Contribution Plan Disclosure [Line Items]
Percentage of each participants eligible compensation (as a percent)			1.00%
Profit-sharing contribution \| Subsequent Event
Defined Contribution Plan Disclosure [Line Items]
Percentage of each participants eligible compensation (as a percent)	6.00%
Other Postretirement Benefits Plan
Defined Contribution Plan Disclosure [Line Items]
Number of year of service (in years)			5 years
Employer contributions			$ 0	0
Benefits paid			3,000,000	4,000,000
Retirement Pension Benefits
Defined Contribution Plan Disclosure [Line Items]
Accumulated benefit obligation			628,000,000	637,000,000
Employer contributions			5,000,000	0
Benefits paid			36,000,000	$ 33,000,000
Magellan Non-Union Plan
Defined Contribution Plan Disclosure [Line Items]
Employer contributions		$ 17,000,000
Magellan Union Plan
Defined Contribution Plan Disclosure [Line Items]
Employer contributions		$ 3,000,000
ONEOK Defined Benefit Pension
Defined Contribution Plan Disclosure [Line Items]
Employer contributions			9,000,000
Other Pension Plan
Defined Contribution Plan Disclosure [Line Items]
Employer contributions			$ 0