OTHER LIABILITIES, INCLUDING EMPLOYEE BENEFITS (Schedule of Disclosures) (Details) $ in Millions	12 Months Ended
	Dec. 31, 2023 USD ($) Rp / $	Dec. 31, 2022 USD ($) Rp / $	Dec. 31, 2021 USD ($)
Defined Benefit Plan, Plan with Accumulated Benefit Obligation in Excess of Plan Assets [Abstract]
Projected and accumulated benefit obligation	$ 1,828	$ 1,831
Fair value of plan assets	1,475	1,422
Pension Plan | UNITED STATES
Change in benefit obligation:
Benefit obligation at beginning of year	1,884	2,553
Service cost	15	15	$ 12
Interest cost	98	71	66
Actuarial losses (gains)	15	(623)
Foreign exchange losses (gains)	1	(3)
Defined Benefit Plan, Benefit Obligation, Benefits Paid	133	129
Benefits obligation at end of year	1,880	1,884	2,553
Change in plan assets:
Fair value of plan assets at beginning of year	1,483	2,071
Actual return on plan assets	121	(509)
Employer contributions	65	52
Foreign exchange gains (losses)	1	(2)
Benefits and administrative expenses paid	(133)	(129)
Fair value of plan assets at end of year	1,537	1,483	$ 2,071
Funded status at end of year	(343)	(401)
Accumulated benefit obligation	$ 1,878	$ 1,882
Weighted-average assumptions used to determine benefit obligations [Abstract]
Discount rate	5.15%	5.41%	2.85%
Balance sheet classification of funded status:
Other assets	$ 9	$ 8
Accounts payable and accrued liabilities	(3)	(4)
Other liabilities	(349)	(405)
Total	(343)	$ (401)
Estimated future employer contributions in next fiscal year	$ 65
Weighted-average assumptions used to determine benefit obligations [Abstract]
Discount rate	5.41%	2.85%	2.50%
Expected return on plan assets	5.00%	3.00%	5.25%
Components of net periodic benefit (income) cost and other amounts recognized in other comprehensive income [Abstract]
Service cost	$ 15	$ 15	$ 12
Interest cost	98	71	66
Expected return on plan assets	(72)	(62)	(98)
Amortization of net actuarial losses	15	15	25
Net periodic benefit cost	56	39	5
Pension Plan | Foreign Plan
Change in benefit obligation:
Benefit obligation at beginning of year	215	237
Service cost	11	12	13
Interest cost	14	14	14
Actuarial losses (gains)	3	(2)
Foreign exchange losses (gains)	4	(22)
Defined Benefit Plan, Benefit Obligation, Benefits Paid	27	26
Benefits obligation at end of year	221	215	237
Change in plan assets:
Fair value of plan assets at beginning of year	205	240
Actual return on plan assets	11	10
Employer contributions	9	2
Foreign exchange gains (losses)	4	(21)
Benefits and administrative expenses paid	(26)	(26)
Fair value of plan assets at end of year	203	205	$ 240
Funded status at end of year	(18)	(10)
Accumulated benefit obligation	$ 182	$ 176
Weighted-average assumptions used to determine benefit obligations [Abstract]
Discount rate	6.75%	7.00%
Rate of compensation increase	4.00%	4.00%
Balance sheet classification of funded status:
Other assets	$ 0	$ 0
Accounts payable and accrued liabilities	0	0
Other liabilities	(18)	(10)
Total	(18)	$ (10)
Estimated future employer contributions in next fiscal year	$ 11
Foreign currency exchange rate | Rp / $	15,339	15,652
Weighted-average assumptions used to determine benefit obligations [Abstract]
Discount rate	7.00%	6.50%	6.25%
Expected return on plan assets	7.00%	7.00%	7.75%
Rate of compensation increase	4.00%	4.00%	4.00%
Components of net periodic benefit (income) cost and other amounts recognized in other comprehensive income [Abstract]
Service cost	$ 11	$ 12	$ 13
Interest cost	14	14	14
Expected return on plan assets	(14)	(15)	(19)
Amortization of prior service cost	2	1	1
Amortization of net actuarial losses	(1)	(1)	(1)
Special termination benefit	1	2	0
Net periodic benefit cost	13	13	$ 8
Pension Plan | FCX | UNITED STATES
Change in benefit obligation:
Special termination benefits and plan amendments	0	0
Pension Plan | PT Freeport Indonesia, Subsidiary | Foreign Plan
Change in benefit obligation:
Special termination benefits and plan amendments	$ 1	$ 2