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Commitments and Contingencies (Tables)

3 Months Ended

Mar. 31, 2025

Commitments and Contingencies Disclosure [Abstract]

Schedule of Personal Injury Liability Activity

Our personal injury liability activity was as follows:

Millions, for the three months ended March 31,			2025			2024
Beginning balance			$	379		$	383
Current year accruals			26			29
Changes in estimates for prior years			2			(4)
Payments			(42)			(32)
Ending balance at March 31,			$	365		$	376
Current portion, ending balance at March 31,			$	117		$	112

Schedule of Environmental Liability Activity

Our environmental liability activity was as follows:

Millions, for the three months ended March 31,			2025			2024
Beginning balance			$	268		$	245
Accruals			17			28
Payments			(21)			(19)
Ending balance at March 31,			$	264		$	254
Current portion, ending balance at March 31,			$	76		$	92

X

- Definition

Tabular disclosure of the environmental loss contingencies that were reported in the period or disclosed as of the balance sheet date.

+ References

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- Definition

Tabular disclosure of the loss contingencies that were reported in the period or disclosed as of the balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 450
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483076/450-20-50-1

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 450
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483076/450-20-50-4

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 450
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 9
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483076/450-20-50-9

Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 460
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482425/460-10-50-3

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