OTHER LIABILITIES, INCLUDING EMPLOYEE BENEFITS (Schedule of Disclosures) (Details) $ in Millions	12 Months Ended
	Dec. 31, 2022 USD ($) Rp / $	Dec. 31, 2021 USD ($) Rp / $	Dec. 31, 2020 USD ($)
Defined Benefit Plan, Plan with Accumulated Benefit Obligation in Excess of Plan Assets [Abstract]
Projected and accumulated benefit obligation	$ 1,831	$ 2,476
Fair value of plan assets	1,422	1,988
Pension Plan | UNITED STATES
Change in benefit obligation:
Benefit obligation at beginning of year	2,553	2,722
Service cost	15	12	$ 37
Interest cost	71	66	77
Actuarial gains	(623)	(117)
Foreign exchange gains	(3)	(1)
Defined Benefit Plan, Benefit Obligation, Benefits Paid	129	129
Benefits obligation at end of year	1,884	2,553	2,722
Change in plan assets:
Fair value of plan assets at beginning of year	2,071	1,946
Actual return on plan assets	(509)	150
Employer contributions	52	105
Foreign exchange losses	(2)	(1)
Benefits and administrative expenses paid	(129)	(129)
Fair value of plan assets at end of year	1,483	2,071	$ 1,946
Funded status at end of year	(401)	(482)
Accumulated benefit obligation	$ 1,882	$ 2,551
Weighted-average assumptions used to determine benefit obligations [Abstract]
Discount rate	5.41%	2.85%	2.50%
Balance sheet classification of funded status:
Other assets	$ 8	$ 6
Accounts payable and accrued liabilities	(4)	(4)
Other liabilities	(405)	(484)
Total	(401)	$ (482)
Estimated future employer contributions in next fiscal year	$ 60
Weighted-average assumptions used to determine benefit obligations [Abstract]
Discount rate	2.85%	2.50%	2.98%
Expected return on plan assets	3.00%	5.25%	6.25%
Rate of compensation increase			3.25%
Components of net periodic benefit (income) cost and other amounts recognized in other comprehensive income [Abstract]
Service cost	$ 15	$ 12	$ 37
Interest cost	71	66	77
Expected return on plan assets	(62)	(98)	(105)
Amortization of net actuarial losses	15	25	45
Curtailment loss	0	0	4
Net periodic benefit cost	39	5	58
Pension Plan | Foreign Plan
Change in benefit obligation:
Benefit obligation at beginning of year	237	238
Service cost	12	13	11
Interest cost	14	14	14
Actuarial gains	(2)	(3)
Foreign exchange gains	(22)	(3)
Defined Benefit Plan, Benefit Obligation, Benefits Paid	26	20
Benefits obligation at end of year	215	237	238
Change in plan assets:
Fair value of plan assets at beginning of year	240	251
Actual return on plan assets	10	8
Employer contributions	2	4
Foreign exchange losses	(21)	(3)
Benefits and administrative expenses paid	(26)	(20)
Fair value of plan assets at end of year	205	240	$ 251
Funded status at end of year	(10)	3
Accumulated benefit obligation	$ 176	$ 194
Weighted-average assumptions used to determine benefit obligations [Abstract]
Discount rate	7.00%	6.50%
Rate of compensation increase	4.00%	4.00%
Balance sheet classification of funded status:
Other assets	$ 0	$ 3
Accounts payable and accrued liabilities	0	0
Other liabilities	(10)	0
Total	(10)	$ 3
Estimated future employer contributions in next fiscal year	$ 11
Foreign currency exchange rate | Rp / $	15,652	14,198
Weighted-average assumptions used to determine benefit obligations [Abstract]
Discount rate	6.50%	6.25%	7.25%
Expected return on plan assets	7.00%	7.75%	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	$ 12	$ 13	$ 11
Interest cost	14	14	14
Expected return on plan assets	(15)	(19)	(19)
Amortization of prior service cost	1	1	2
Amortization of net actuarial losses	(1)	(1)	(3)
Special termination benefit	2	0	0
Net periodic benefit cost	13	8	$ 5
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	$ 2	$ (2)