Cerro Verde [Abstract]

No definition available.

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- Definition

The minimum coverage interest ratio (ratio of consolidated EBITDAX, as defined in the credit agreement, to consolidated cash interest expense).

+ References

No definition available.

+ Details

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- Definition

Leverage ratio per debt agreement, calculated as net debt divided by EBITDA.

+ References

No definition available.

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- Definition

Debt Instrument, Covenant Compliance, Leverage Ratio, Unrestricted Cash Applied to Total Debt

+ References

No definition available.

+ Details

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- Definition

Number of installment payments under installment program.

+ References

No definition available.

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- Definition

Related Party Transaction, Remaining Borrowing Capacity

+ References

No definition available.

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- Definition

Revolving Credit Facility [Abstract]

+ References

No definition available.

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- Definition

Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

+ References

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Amount of the required periodic payments including both interest and principal payments.

+ References

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- Definition

Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

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- Definition

Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

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- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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- Definition

Amount of increase (decrease) of the credit facility.

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- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

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- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

+ References

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- Definition

Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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- Definition

Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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- Definition

The net cash inflow or outflow in aggregate debt due to repayments and proceeds from additional borrowings.

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- Definition

Amount of cash outflow for payment of an obligation from a lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements.

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DEBT (Details)			1 Months Ended	2 Months Ended	3 Months Ended		10 Months Ended	12 Months Ended
DEBT (Details)	Aug. 15, 2019 USD ($)	May 02, 2019 USD ($)	Jun. 30, 2017 USD ($)	Dec. 31, 2019 USD ($)	Dec. 31, 2021	Mar. 31, 2014 USD ($)	Oct. 31, 2019 USD ($)	Dec. 31, 2019 USD ($) payment	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Jun. 29, 2017 USD ($)	Dec. 31, 2014 USD ($)
Debt Instruments [Line Items]
Gain (Loss) on Extinguishment of Debt								$ 27,000,000	$ (7,000,000)	$ (21,000,000)
Long-term Debt, Maturities, Repayments of Principal in Year Two				$ 507,000,000				507,000,000
Long-term Debt				$ 9,826,000,000				9,826,000,000	11,141,000,000
Proceeds from (Repayments of) Debt	$ 1,187,000,000
Cerro Verde [Abstract]
Term of Debt Agreement		5 years
Debt Instrument, Leverage Ratio				5.25			3.75
Debt instrument, leverage ratio, amount of unrestricted cash that may be applied to reduce total debt				$ 1,250,000,000			$ 2,500,000,000
Senior Notes [Member]
Debt Instruments [Line Items]
Gain (Loss) on Extinguishment of Debt								(26,000,000)	10,000,000	26,000,000
Other Debt [Member]
Debt Instruments [Line Items]
Long-term Debt				$ 41,000,000				$ 41,000,000	$ 166,000,000
2.15% Senior Notes due 2017 [Member] \| Senior Notes [Member]
Debt Instruments [Line Items]
Debt Instrument, Interest Rate, Stated Percentage				2.15%				2.15%
2.30% Senior Notes Due 2017 \| Senior Notes [Member]
Debt Instruments [Line Items]
Debt Instrument, Interest Rate, Stated Percentage				2.30%				2.30%
6.125% Senior Notes due 2019 [Member] \| Senior Notes [Member]
Debt Instruments [Line Items]
Gain (Loss) on Extinguishment of Debt										2,000,000
Debt Instrument, Interest Rate, Stated Percentage				6.125%				6.125%	6.125%
2.375% Senior Notes due March 2018 [Member] \| Senior Notes [Member]
Debt Instruments [Line Items]
Gain (Loss) on Extinguishment of Debt										0
Debt Instrument, Interest Rate, Stated Percentage				2.375%				2.375%
6.5% Senior Notes due 2020 [Member] \| Senior Notes [Member]
Debt Instruments [Line Items]
Gain (Loss) on Extinguishment of Debt										13,000,000
Debt Instrument, Interest Rate, Stated Percentage				6.50%				6.50%	6.50%
6.625% Senior Notes due 2021 [Member] \| Senior Notes [Member]
Debt Instruments [Line Items]
Gain (Loss) on Extinguishment of Debt										6,000,000
Debt Instrument, Interest Rate, Stated Percentage				6.625%				6.625%	6.625%
6.75% Senior Notes due 2022 [Member] \| Senior Notes [Member]
Debt Instruments [Line Items]
Debt Instrument, Interest Rate, Stated Percentage				6.75%				6.75%	6.75%
3.100% Senior Notes due March 2020 \| Senior Notes [Member]
Debt Instruments [Line Items]
Gain (Loss) on Extinguishment of Debt								$ (5,000,000)
Long-term Debt				$ 0				$ 0	$ 999,000,000
Debt Instrument, Interest Rate, Stated Percentage				3.10%				3.10%
6.875% Senior Notes due 2023 [Member] \| Senior Notes [Member]
Debt Instruments [Line Items]
Gain (Loss) on Extinguishment of Debt									2,000,000
Long-term Debt				$ 0				$ 0	$ 768,000,000
Debt Instrument, Interest Rate, Stated Percentage				6.875%				6.875%	6.875%
4.00% Senior Notes Due 2021 [Member] \| Senior Notes [Member]
Debt Instruments [Line Items]
Long-term Debt				$ 194,000,000				$ 194,000,000	$ 597,000,000
Debt Instrument, Interest Rate, Stated Percentage				4.00%				4.00%
3.55% Senior Notes Due 2022 [Member] \| Senior Notes [Member]
Debt Instruments [Line Items]
Gain (Loss) on Extinguishment of Debt								$ 0
Long-term Debt				$ 1,876,000,000				$ 1,876,000,000	1,886,000,000
Debt Instrument, Interest Rate, Stated Percentage				3.55%				3.55%
3.875% Senior Notes due March 2023 [Member] \| Senior Notes [Member]
Debt Instruments [Line Items]
Long-term Debt				$ 1,917,000,000				$ 1,917,000,000	1,915,000,000
Debt Instrument, Interest Rate, Stated Percentage				3.875%				3.875%
senior notes 4.55 [Member] \| Senior Notes [Member]
Debt Instruments [Line Items]
Long-term Debt				$ 846,000,000				$ 846,000,000	845,000,000
Debt Instrument, Interest Rate, Stated Percentage				4.55%				4.55%
Senior Notes due 2034 5 point 4 percent [Member] \| Senior Notes [Member]
Debt Instruments [Line Items]
Long-term Debt				$ 741,000,000				$ 741,000,000	741,000,000
Debt Instrument, Interest Rate, Stated Percentage				5.40%				5.40%
5.450% Senior Notes due March 2043 [Member] \| Senior Notes [Member]
Debt Instruments [Line Items]
Long-term Debt				$ 1,844,000,000				$ 1,844,000,000	1,843,000,000
Debt Instrument, Interest Rate, Stated Percentage				5.45%				5.45%
Senior Notes due 2027, 5% [Member]
Debt Instruments [Line Items]
Long-term Debt	$ 600,000,000
Debt Instrument, Interest Rate, Stated Percentage	5.00%			5.00%				5.00%
Senior Notes due 2027, 5% [Member] \| Senior Notes [Member]
Debt Instruments [Line Items]
Long-term Debt				$ 592,000,000				$ 592,000,000	0
Senior Notes due 2029, 5.25% [Member]
Debt Instruments [Line Items]
Long-term Debt	$ 600,000,000
Debt Instrument, Interest Rate, Stated Percentage	5.25%			5.25%				5.25%
Senior Notes due 2029, 5.25% [Member] \| Senior Notes [Member]
Debt Instruments [Line Items]
Long-term Debt				$ 592,000,000				$ 592,000,000	0
Senior Notes Due 2023 [Member]
Debt Instruments [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	6.875%
Senior Notes Due 2023 [Member] \| Senior Notes [Member]
Debt Instruments [Line Items]
Gain (Loss) on Extinguishment of Debt								(6,000,000)
Senior Notes Due 2021 [Member]
Debt Instruments [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	4.00%
Senior Notes Due 2021 [Member] \| Senior Notes [Member]
Debt Instruments [Line Items]
Gain (Loss) on Extinguishment of Debt								(15,000,000)
Senior Notes Due 2022 [Member]
Debt Instruments [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	3.55%
Senior Notes Due 2022 [Member] \| Senior Notes [Member]
Debt Instruments [Line Items]
Gain (Loss) on Extinguishment of Debt									8,000,000
Cerro Verde \| Line of Credit [Member]
Debt Instruments [Line Items]
Long-term Debt				826,000,000				826,000,000	1,023,000,000
Cerro Verde \| Shareholder Loan [Member]
Debt Instruments [Line Items]
Long-term Debt				0				0
Cerro Verde [Abstract]
Related Party Transaction, Remaining Borrowing Capacity				200,000,000				200,000,000				$ 800,000,000
Cerro Verde \| Senior Notes [Member]
Debt Instruments [Line Items]
Gain (Loss) on Extinguishment of Debt								1,000,000	3,000,000	$ 5,000,000
Freeport McMoRan Corporation [Member] \| 7.125% Debentures due 2027 [Member] \| Debentures [Member]
Debt Instruments [Line Items]
Long-term Debt				$ 115,000,000				$ 115,000,000	115,000,000
Debt Instrument, Interest Rate, Stated Percentage				7.125%				7.125%
Freeport McMoRan Corporation [Member] \| 9.5% Senior Notes due 2031 [Member] \| Senior Notes [Member]
Debt Instruments [Line Items]
Long-term Debt				$ 125,000,000				$ 125,000,000	126,000,000
Debt Instrument, Interest Rate, Stated Percentage				9.50%				9.50%
Freeport McMoRan Corporation [Member] \| 6.125% Senior Notes due 2034 [Member] \| Senior Notes [Member]
Debt Instruments [Line Items]
Long-term Debt				$ 117,000,000				$ 117,000,000	117,000,000
Debt Instrument, Interest Rate, Stated Percentage				6.125%				6.125%
Freeport-McMoRan Oil & Gas \| 6.125% Senior Notes due 2019 [Member] \| Senior Notes [Member]
Debt Instruments [Line Items]
Debt Instrument, Interest Rate, Stated Percentage				6.125%				6.125%
Freeport-McMoRan Oil & Gas \| 6.5% Senior Notes due 2020 [Member] \| Senior Notes [Member]
Debt Instruments [Line Items]
Debt Instrument, Interest Rate, Stated Percentage				6.50%				6.50%
Freeport-McMoRan Oil & Gas \| 6.625% Senior Notes due 2021 [Member] \| Senior Notes [Member]
Debt Instruments [Line Items]
Debt Instrument, Interest Rate, Stated Percentage				6.625%				6.625%
Freeport-McMoRan Oil & Gas \| 6.75% Senior Notes due 2022 [Member] \| Senior Notes [Member]
Debt Instruments [Line Items]
Debt Instrument, Interest Rate, Stated Percentage				6.75%				6.75%
Freeport-McMoRan Oil & Gas \| 6.875% Senior Notes due 2023 [Member] \| Senior Notes [Member]
Debt Instruments [Line Items]
Debt Instrument, Interest Rate, Stated Percentage				6.875%				6.875%
Line of Credit [Member] \| Cerro Verde \| Line of Credit [Member]
Debt Instruments [Line Items]
Long-term Debt			$ 1,500,000,000								$ 1,275,000,000
Revolving Credit Facility [Abstract]
Line of Credit Facility, Maximum Borrowing Capacity						$ 1,800,000,000
Cerro Verde [Abstract]
Term of Debt Agreement						5 years
Line of Credit Facility, Increase (Decrease), Net			$ 225,000,000
Number of Installment Payments under Installment Program \| payment								4
Debt Instrument, Interest Rate, Effective Percentage				3.70%				3.70%
Letter of Credit [Member] \| Line of Credit [Member]
Revolving Credit Facility [Abstract]
Long-term Line of Credit				$ 13,000,000				$ 13,000,000
Line of Credit Facility, Remaining Borrowing Capacity				1,500,000,000				1,500,000,000
Revolving Credit Facility [Member] \| Line of Credit [Member]
Debt Instruments [Line Items]
Long-term Debt				0				0	0
Revolving Credit Facility [Abstract]
Line of Credit Facility, Maximum Borrowing Capacity		$ 3,500,000,000
Line of Credit Facility, Remaining Borrowing Capacity				3,500,000,000				3,500,000,000
Revolving Credit Facility [Member] \| Amended Credit Facility, Maturing April 20, 2024 [Member] \| Line of Credit [Member]
Revolving Credit Facility [Abstract]
Line of Credit Facility, Remaining Borrowing Capacity		3,260,000,000
Revolving Credit Facility [Member] \| Amended Credit Facility, Maturing April 20, 2023 [Member] \| Line of Credit [Member]
Revolving Credit Facility [Abstract]
Line of Credit Facility, Remaining Borrowing Capacity		$ 240,000,000
Revolving Credit Facility [Member] \| PT Freeport Indonesia [Member] \| Line of Credit [Member]
Revolving Credit Facility [Abstract]
Line of Credit Facility, Remaining Borrowing Capacity				$ 500,000,000				500,000,000
Debt Instrument, Payment Period One [Member] \| Line of Credit [Member] \| Cerro Verde \| Line of Credit [Member]
Cerro Verde [Abstract]
Debt Instrument, Periodic Payment								225,000,000
June 30, 2021 [Member] \| Line of Credit [Member] \| Cerro Verde \| Line of Credit [Member]
Cerro Verde [Abstract]
Debt Instrument, Periodic Payment								225,000,000
Debt Instrument, Payment Period Three [Member] \| Line of Credit [Member] \| Cerro Verde \| Line of Credit [Member]
Cerro Verde [Abstract]
Debt Instrument, Periodic Payment								525,000,000
Repayments of Lines of Credit								$ 200,000,000	$ 20,000,000
Minimum
Cerro Verde [Abstract]
Debt Instrument, Coverage Ratio								2.25
Maximum
Cerro Verde [Abstract]
Debt Instrument, Leverage Ratio								5.25
Forecast [Member] \| Maximum
Cerro Verde [Abstract]
Debt Instrument, Leverage Ratio					3.75