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.

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.

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- Definition

Percentage of target investment allocation to total plan assets. Includes, but is not limited to, percentage on weighted-average basis if more than one plan.

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Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition

Percentage of actual investment allocation to total plan assets. Includes, but is not limited to, percentage on weighted-average basis if more than one plan.

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Employee Benefit Plans - Pension Plan Assets (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	$ 2,583	$ 3,457	$ 3,462
Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	6	2
Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	1,858	2,708
Fair Value Measured at Net Asset Value Per Share
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	$ 702	546
Return Seeking Securities
Defined Benefit Plan Disclosure [Line Items]
Actual Allocation, Percentage	42.10%
Liability Matching Securities
Defined Benefit Plan Disclosure [Line Items]
Actual Allocation, Percentage	57.90%
Cash
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	$ 6	2
Cash \| Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	6	2
Cash \| Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Collective trust funds(a)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	1,858	2,708
Collective trust funds(a) \| Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Collective trust funds(a) \| Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	1,858	2,708
Includes accrued liabilities and excluded accrued investment income and other receivables and investments measured at NAV
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	1,864	2,710
Accrued investment income and other receivables
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	42	247
Accured liabilities
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	$ (25)	$ (46)
Minimum \| Return Seeking Securities
Defined Benefit Plan Disclosure [Line Items]
Target Allocation, Percentage	20.00%
Maximum \| Return Seeking Securities
Defined Benefit Plan Disclosure [Line Items]
Target Allocation, Percentage	40.00%