Contingencies and Commitments - Asset Retirement Obligations (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2024	Mar. 31, 2023
Other Commitments [Line Items]
Increase in ARO liability and asset retirement cost asset	$ 256
Production and delivery	3,844	$ 3,165
Freeport-McMoRan Oil & Gas
Other Commitments [Line Items]
Production and delivery	$ 109

Amount of increase (decrease) in asset retirement obligations.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 410
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481850/410-20-50-1

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The aggregate direct operating costs incurred during the reporting period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 220
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.2)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483621/220-10-S99-2

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