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Note 14 - Commitments and Contingencies - Environmental Liability Activity (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Beginning	$ 243	$ 233
Accruals	40	12
Payments	(15)	(11)
Balance	268	234
Balance, Current	$ 64	$ 63

X

- Definition

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

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
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X

- Definition

Amount of expense for newly incurred environmental loss contingencies. Includes, but is not limited to, remediation expense and interest accretion.

+ References

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- Definition

Amount of cash outflow to settle environmental loss contingencies.

+ References

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- Definition

Carrying value of the obligation (known or estimated) arising from requirements to perform activities to remediate one or more sites, payable in twelve months or in the next operating cycle if longer.

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