Employee Benefit Plans - Pension Plan Assets (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2024	Dec. 31, 2023
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	$ 2,313	$ 2,553
Defined Benefit Plan, Change in Fair Value of Plan Assets, Level 3 Reconciliation [Roll Forward]
Fair value of plan assets at beginning of year	2,553	2,583
Fair value of plan assets at end of year	2,313	2,553
Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	806	745
Defined Benefit Plan, Change in Fair Value of Plan Assets, Level 3 Reconciliation [Roll Forward]
Fair value of plan assets at beginning of year	745
Fair value of plan assets at end of year	806	745
Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	1,363	1,464
Defined Benefit Plan, Change in Fair Value of Plan Assets, Level 3 Reconciliation [Roll Forward]
Fair value of plan assets at beginning of year	1,464
Fair value of plan assets at end of year	1,363	1,464
Fair Value Measured at Net Asset Value Per Share
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	142	342
Defined Benefit Plan, Change in Fair Value of Plan Assets, Level 3 Reconciliation [Roll Forward]
Fair value of plan assets at beginning of year	342
Fair value of plan assets at end of year	142	342
Collective trust funds(a)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	806	745
Defined Benefit Plan, Change in Fair Value of Plan Assets, Level 3 Reconciliation [Roll Forward]
Fair value of plan assets at beginning of year	745
Fair value of plan assets at end of year	806	745
Collective trust funds(a) \| Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	806	745
Defined Benefit Plan, Change in Fair Value of Plan Assets, Level 3 Reconciliation [Roll Forward]
Fair value of plan assets at beginning of year	745
Fair value of plan assets at end of year	806	745
Collective trust funds(a) \| Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Defined Benefit Plan, Change in Fair Value of Plan Assets, Level 3 Reconciliation [Roll Forward]
Fair value of plan assets at beginning of year	0
Fair value of plan assets at end of year	0	0
Group annuity contract(b)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	1,363	1,464
Defined Benefit Plan, Change in Fair Value of Plan Assets, Level 3 Reconciliation [Roll Forward]
Fair value of plan assets at beginning of year	1,464
Fair value of plan assets at end of year	1,363	1,464
Group annuity contract(b) \| Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Defined Benefit Plan, Change in Fair Value of Plan Assets, Level 3 Reconciliation [Roll Forward]
Fair value of plan assets at beginning of year	0
Fair value of plan assets at end of year	0	0
Group annuity contract(b) \| Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	1,363	1,464
Defined Benefit Plan, Change in Fair Value of Plan Assets, Level 3 Reconciliation [Roll Forward]
Fair value of plan assets at beginning of year	1,464	0
Purchases	0	1,430
Unrealized gain (loss)	(101)	34
Fair value of plan assets at end of year	1,363	1,464
Includes accrued liabilities and excludes accrued investment income and other receivables and investments measured at NAV
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	2,169	2,209
Defined Benefit Plan, Change in Fair Value of Plan Assets, Level 3 Reconciliation [Roll Forward]
Fair value of plan assets at beginning of year	2,209
Fair value of plan assets at end of year	2,169	2,209
Accrued investment income and other receivables
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	2	4
Defined Benefit Plan, Change in Fair Value of Plan Assets, Level 3 Reconciliation [Roll Forward]
Fair value of plan assets at beginning of year	4
Fair value of plan assets at end of year	2	4
Accured liabilities
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	(2)
Defined Benefit Plan, Change in Fair Value of Plan Assets, Level 3 Reconciliation [Roll Forward]
Fair value of plan assets at beginning of year	(2)
Fair value of plan assets at end of year	$ 0	$ (2)

Amount, measured using unobservable inputs, of increase (decrease) in plan assets of defined benefit plan from actual return (loss) on assets still held.

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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

No definition available.

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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

Amount of asset segregated and restricted to provide benefit under defined benefit plan. Asset includes, but is not limited to, stock, bond, other investment, earning from investment, and contribution by employer and employee.

+ References

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- Definition

Amount, measured using unobservable inputs, of increase (decrease) in plan assets of defined benefit plan, for assets transferred into (out of) Level 3 of fair value hierarchy. Includes, but is not limited to, transfer due to change in observability of significant inputs.

+ References

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