[Line Items] for Fair Value of Plan Assets [Table]

No definition available.

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- Definition

Amount of actuarial present value of benefits attributed to service rendered by employee for defined benefit plan.

+ References

+ Details

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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

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (d)(iv)(01)
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-Publisher FASB
-Name Accounting Standards Codification
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-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
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-Publisher FASB
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- Definition

Amount of projected benefit obligation for defined benefit pension plan with accumulated benefit obligation in excess of plan assets.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 3
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-URI https://asc.fasb.org/extlink&oid=123447040&loc=d3e2417-114920

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Retirement Benefits (Fair Value of Plan Assets) (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Other Postretirement Benefits
Fair Value of Plan Assets [Line Items]
Accumulated benefit obligation	$ 148	$ 195	$ 208
Fair value of plan assets	259	311	291
Pension Benefits
Fair Value of Plan Assets [Line Items]
Accumulated benefit obligation		50	55
Fair value of plan assets	20	44
Cash and Cash Equivalents [Member] \| Other Postretirement Benefits
Fair Value of Plan Assets [Line Items]
Fair value of plan assets	19	22
Cash and Cash Equivalents [Member] \| Pension Benefits
Fair Value of Plan Assets [Line Items]
Fair value of plan assets	2	1
Mutual Fund [Member] \| Other Postretirement Benefits
Fair Value of Plan Assets [Line Items]
Fair value of plan assets	146	175
Mutual Fund [Member] \| Pension Benefits
Fair Value of Plan Assets [Line Items]
Fair value of plan assets	18	24
Fixed Income Securities [Member] \| Other Postretirement Benefits
Fair Value of Plan Assets [Line Items]
Fair value of plan assets	94	114
Fixed Income Securities [Member] \| Pension Benefits
Fair Value of Plan Assets [Line Items]
Fair value of plan assets		19
Level 1 [Member] \| Other Postretirement Benefits
Fair Value of Plan Assets [Line Items]
Fair value of plan assets	165	197
Level 1 [Member] \| Pension Benefits
Fair Value of Plan Assets [Line Items]
Fair value of plan assets	20	25
Level 1 [Member] \| Cash and Cash Equivalents [Member] \| Other Postretirement Benefits
Fair Value of Plan Assets [Line Items]
Fair value of plan assets	19	22
Level 1 [Member] \| Cash and Cash Equivalents [Member] \| Pension Benefits
Fair Value of Plan Assets [Line Items]
Fair value of plan assets	2	1
Level 1 [Member] \| Mutual Fund [Member] \| Other Postretirement Benefits
Fair Value of Plan Assets [Line Items]
Fair value of plan assets	146	175
Level 1 [Member] \| Mutual Fund [Member] \| Pension Benefits
Fair Value of Plan Assets [Line Items]
Fair value of plan assets	18	24
Level 1 [Member] \| Fixed Income Securities [Member] \| Other Postretirement Benefits
Fair Value of Plan Assets [Line Items]
Fair value of plan assets	0	0
Level 1 [Member] \| Fixed Income Securities [Member] \| Pension Benefits
Fair Value of Plan Assets [Line Items]
Fair value of plan assets		0
Level 2 [Member] \| Other Postretirement Benefits
Fair Value of Plan Assets [Line Items]
Fair value of plan assets	94	114
Level 2 [Member] \| Pension Benefits
Fair Value of Plan Assets [Line Items]
Fair value of plan assets	0	19
Level 2 [Member] \| Cash and Cash Equivalents [Member] \| Other Postretirement Benefits
Fair Value of Plan Assets [Line Items]
Fair value of plan assets	0	0
Level 2 [Member] \| Cash and Cash Equivalents [Member] \| Pension Benefits
Fair Value of Plan Assets [Line Items]
Fair value of plan assets	0	0
Level 2 [Member] \| Mutual Fund [Member] \| Other Postretirement Benefits
Fair Value of Plan Assets [Line Items]
Fair value of plan assets	0	0
Level 2 [Member] \| Mutual Fund [Member] \| Pension Benefits
Fair Value of Plan Assets [Line Items]
Fair value of plan assets	0	0
Level 2 [Member] \| Fixed Income Securities [Member] \| Other Postretirement Benefits
Fair Value of Plan Assets [Line Items]
Fair value of plan assets	94	114
Level 2 [Member] \| Fixed Income Securities [Member] \| Pension Benefits
Fair Value of Plan Assets [Line Items]
Fair value of plan assets		19
Level 3 [Member] \| Other Postretirement Benefits
Fair Value of Plan Assets [Line Items]
Fair value of plan assets	0	0
Level 3 [Member] \| Pension Benefits
Fair Value of Plan Assets [Line Items]
Fair value of plan assets	0	0
Level 3 [Member] \| Cash and Cash Equivalents [Member] \| Other Postretirement Benefits
Fair Value of Plan Assets [Line Items]
Fair value of plan assets	0	0
Level 3 [Member] \| Cash and Cash Equivalents [Member] \| Pension Benefits
Fair Value of Plan Assets [Line Items]
Fair value of plan assets	0	0
Level 3 [Member] \| Mutual Fund [Member] \| Other Postretirement Benefits
Fair Value of Plan Assets [Line Items]
Fair value of plan assets	0	0
Level 3 [Member] \| Mutual Fund [Member] \| Pension Benefits
Fair Value of Plan Assets [Line Items]
Fair value of plan assets	0	0
Level 3 [Member] \| Fixed Income Securities [Member] \| Other Postretirement Benefits
Fair Value of Plan Assets [Line Items]
Fair value of plan assets	0	0
Level 3 [Member] \| Fixed Income Securities [Member] \| Pension Benefits
Fair Value of Plan Assets [Line Items]
Fair value of plan assets		0
Funded Plans [Member] \| Pension Benefits
Fair Value of Plan Assets [Line Items]
Projected benefit obligation	22	50
Accumulated benefit obligation	22	50
Fair value of plan assets	20	44	45
Unfunded Plans [Member] \| Pension Benefits
Fair Value of Plan Assets [Line Items]
Projected benefit obligation	19	26
Accumulated benefit obligation	19	26	31
Fair value of plan assets	$ 0	$ 0	$ 0