Liabilities, Commitments and Contingencies - Schedule of Environmental Remediation Activity (Details) - USD ($) $ in Millions	9 Months Ended
Sep. 30, 2024	Sep. 30, 2023
Environmental [Roll Forward]
Beginning balance – January 1	$ 844	$ 752
Reductions for payments made, net of recoveries	(67)	(46)
Changes in estimates	98	149
Ending balance – September 30	$ 875	$ 855

Total costs accrued as of the balance sheet date for environmental loss contingencies.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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Reference 3: http://www.xbrl.org/2003/role/recommendedDisclosureRef
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- Definition

Amount of expense (reversal of expense) which increases (decreases) the accrual for environmental loss contingencies from revisions in estimates to existing obligations. Excludes changes related to business acquisitions, divestitures, or currency movement.

+ References

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- Definition

Amount of cash outflow to settle environmental loss contingencies.

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 450
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-Section S99
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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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