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v3.19.3.a.u2

OTHER LIABILITIES, INCLUDING EMPLOYEE BENEFITS (Penion Plans) (Details) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2019 USD ($) Rp / $ | Dec. 31, 2018 USD ($) Rp / $ | Dec. 31, 2017 USD ($)
Domestic Plan [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Benefit Obligation | $ 2,576 | $ 2,230 | $ 2,343
Discount rate | 3.40% | 4.40% | 3.70%
Expected return on plan assets | 6.25% |  |
Defined Benefit Plan, Benefit Obligation, Actuarial Gain (Loss) | $ (328) | $ 124 |
Service cost | 42 | 44 | $ 44
Interest cost | 95 | 84 | 91
Defined Benefit Plan, Benefit Obligation, Foreign Currency Translation Gain (Loss) | (1) | 1 |
Defined Benefit Plan, Benefit Obligation, Benefits Paid | 120 | 120 |
Total pension plan net assets | 1,677 | 1,433 | 1,588
Actual return on plan assets | 289 | (104) |
Employer contributions | 74 | 70 |
Foreign exchange gains (losses) | 1 | (1) |
Defined Benefit Plan, Plan Assets, Benefits Paid | 120 | 120 |
Defined Benefit Plan, Funded (Unfunded) Status of Plan | (899) | (797) |
Accumulated benefit obligation | $ 2,414 | $ 2,101 |
Rate of compensation increase | 3.25% | 3.25% |
Other assets | $ 8 | $ 7 |
Accounts payable and accrued liabilities | 4 | 4 |
Liability, Defined Benefit Plan, Noncurrent | 903 | 800 |
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position | $ (899) | (797) |
Domestic Plan [Member] | Equity securities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Target allocation percentage of assets | 42.00% |  |
Domestic Plan [Member] | Fixed Income Investments |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Target allocation percentage of assets | 50.00% |  |
Domestic Plan [Member] | Alternative Investments |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Target allocation percentage of assets | 8.00% |  |
SERP |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Years of service required for annuity to equal percentage of executive's highest average compensation for any consecutive three-year period during the preceeding five years before retirement | 25 years |  |
Foreign Plan [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Benefit Obligation | $ 217 | $ 220 | $ 240
Discount rate | 7.25% | 8.25% | 6.75%
Expected return on plan assets | 7.75% |  |
Foreign currency exchange rate | Rp / $ | 13,832 | 14,409 |
Defined Benefit Plan, Benefit Obligation, Actuarial Gain (Loss) | $ 27 | $ 19 |
Service cost | 12 | 13 | $ 20
Interest cost | 17 | 14 | 23
Defined Benefit Plan, Benefit Obligation, Foreign Currency Translation Gain (Loss) | (8) | 15 |
Defined Benefit Plan, Benefit Obligation, Benefits Paid | 13 | 13 |
Total pension plan net assets | 254 | 238 | $ 269
Actual return on plan assets | 19 | (5) |
Employer contributions | 0 | 4 |
Foreign exchange gains (losses) | 10 | (17) |
Defined Benefit Plan, Plan Assets, Benefits Paid | 13 | 13 |
Defined Benefit Plan, Funded (Unfunded) Status of Plan | 37 | 18 |
Accumulated benefit obligation | $ 175 | $ 181 |
Rate of compensation increase | 4.00% | 4.00% |
Other assets | $ 37 | $ 18 |
Accounts payable and accrued liabilities | 0 | 0 |
Liability, Defined Benefit Plan, Noncurrent | 0 | 0 |
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position | 37 | 18 |
FCX [Member] | Pension Plan |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Benefit Obligation, Increase (Decrease) for Plan Amendment | 0 | 4 |
PT Freeport Indonesia, Subsidiary | Pension Plan |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Benefit Obligation, Increase (Decrease) for Plan Amendment | $ 0 | 0 |
Measurement Input, Census Data [Member] | Domestic Plan [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Benefit Obligation, Actuarial Gain (Loss) |  | (33) |
Measurement Input, Mortality Rate [Member] | Domestic Plan [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Benefit Obligation, Actuarial Gain (Loss) |  | (49) |
Measurement Input, Discount Rate [Member] | Domestic Plan [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Benefit Obligation, Actuarial Gain (Loss) |  | $ (205) |

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- Definition Amount of payment to participant of defined benefit plan which decreases benefit obligation. For pension plan, payment includes, but is not limited to, pension benefits and death benefits. For other postretirement plan, payment includes, but is not limited to, prescription drug benefits, health care benefits, life insurance benefits, and legal, educational and advisory services. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a)(6) -URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 60 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6414203&loc=d3e39716-114964 + Details
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