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Note 15 - Commitments and Contingencies (Tables)

6 Months Ended

Jun. 30, 2024

Notes Tables

Schedule of Loss Contingencies by Contingency, Environmental [Table Text Block]

Millions, for the Six Months Ended June 30,		2024				2023
Beginning balance		$	245			$	253
Accruals			78				62
Payments			(50	)			(50	)
Ending balance at June 30,		$	273			$	265
Current portion, ending balance at June 30,		$	119			$	78

Personal Injury [Member]

Notes Tables

Schedule of Loss Contingencies by Contingency [Table Text Block]

Millions, for the Six Months Ended June 30,		2024				2023
Beginning balance		$	383			$	361
Current year accruals			58				52
Changes in estimates for prior years			-				31
Payments			(54	)			(77	)
Ending balance at June 30,		$	387			$	367
Current portion, ending balance at June 30,		$	109			$	98

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+ 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

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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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