Commitments and Contingencies Personal Injury (Details) - Personal Injury - USD ($) $ in Millions	9 Months Ended
Sep. 30, 2022	Sep. 30, 2021
Loss Contingency Accrual [Roll Forward]
Beginning balance	$ 296	$ 273
Accruals / changes in estimates	29	46
Payments	(60)	(25)
Ending balance	265	294
Current portion of ending balance	90	$ 80
Minimum
Loss Contingencies [Line Items]
Loss contingency, estimate of possible loss	220
Maximum
Loss Contingencies [Line Items]
Loss contingency, estimate of possible loss	$ 330

Amount of expense for newly incurred loss contingencies and revisions to previously reported estimates

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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 loss contingency liability.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 1
-URI https://asc.fasb.org/extlink&oid=121557415&loc=d3e14326-108349

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
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-URI https://asc.fasb.org/extlink&oid=121557415&loc=d3e14615-108349

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- Definition

Amount of loss contingency liability expected to be resolved within one year or the normal operating cycle, if longer.

+ References

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- Definition

Amount of cash outflow reducing loss contingency liability.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 1
-URI https://asc.fasb.org/extlink&oid=121557415&loc=d3e14326-108349

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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

Reflects the estimated amount of loss from the specified contingency as of the balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=121557415&loc=d3e14435-108349

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-URI https://asc.fasb.org/extlink&oid=121557415&loc=d3e14557-108349

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 460
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-Section 50
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-URI https://asc.fasb.org/extlink&oid=124440162&loc=d3e12021-110248

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