v3.26.1
Business Segments (Segment Reporting) (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Dec. 31, 2025
Segment Reporting Information [Line Items]          
Revenues $ 7,029 $ 7,582 $ 13,263 $ 13,310  
Depreciation, depletion and amortization (DD&A) 523 668 1,037 1,134  
Selling, general and administrative expenses 135 127 297 281  
Exploration and research expenses 53 46 91 85  
Gain on sale of assets (18) 0 (18) 0  
Environmental obligations and shutdown costs 13 27 30 37  
Gain on PTFI mud rush incident insurance settlement 0 0 (699) 0  
Operating income 2,003 2,432 4,140 3,735  
Corporate Expenses And Elimination Of Intersegment Operating Income (Loss) (201) (70) (320) (153)  
Interest expense, net (95) (82) (209) (152)  
Other Nonoperating Income (Expense) 22 41 33 99  
Income before income taxes and equity in affiliated companies’ net earnings 1,930 2,391 3,964 3,682  
Total assets 59,727 56,492 59,727 56,492 $ 58,167
Segment capital expenditures 1,104 1,261 2,077 2,433  
Mud Rush          
Segment Reporting Information [Line Items]          
Recovery costs 284   690    
DD&A, idle facilities 79   172    
Segment Reporting, Reconciling Item, Excluding Corporate Nonsegment          
Segment Reporting Information [Line Items]          
Depreciation, depletion and amortization (DD&A) 149 131 306 262  
Operating income 656 142 1,133 219  
Total assets 36,913 35,771 36,913 35,771  
Segment capital expenditures 366 300 690 574  
Segment Reporting, Reconciling Item, Excluding Corporate Nonsegment | Unaffiliated Customers          
Segment Reporting Information [Line Items]          
Revenues 1,119 757 2,033 1,545  
Intersegment          
Segment Reporting Information [Line Items]          
Revenues (2,848) (2,070) (5,460) (3,984)  
Total assets (20,143) (20,722) (20,143) (20,722)  
Operating Segments          
Segment Reporting Information [Line Items]          
Revenues 6,995 7,587 13,255 13,212  
Operating income 1,548 2,360 3,327 3,669  
Total assets 42,957 41,443 42,957 41,443  
Segment capital expenditures 729 959 1,373 1,856  
Operating Segments | Unaffiliated Customers          
Segment Reporting Information [Line Items]          
Revenues 5,910 6,825 11,230 11,765  
Operating Segments | Intersegment Customers          
Segment Reporting Information [Line Items]          
Revenues 1,085 762 2,025 1,447  
Segment Reporting, Reconciling Item, Corporate Nonsegment          
Segment Reporting Information [Line Items]          
Segment capital expenditures 9 2 14 3  
Segment Reporting, Reconciling Item, Corporate Nonsegment | Intersegment Customers          
Segment Reporting Information [Line Items]          
Revenues 1,763 1,308 3,435 2,537  
Morenci | Operating Segments          
Segment Reporting Information [Line Items]          
Revenues 756 622 1,532 1,199  
Production and delivery 425 435 862 854  
Depreciation, depletion and amortization (DD&A) 55 46 124 96  
Selling, general and administrative expenses 1 1 1 1  
Exploration and research expenses 10 8 18 14  
Environmental obligations and shutdown costs       (7)  
Gain on PTFI mud rush incident insurance settlement     0    
Operating income 265 132 527 241  
Total assets 3,551 3,337 3,551 3,337  
Segment capital expenditures 50 70 94 129  
Morenci | Operating Segments | North America          
Segment Reporting Information [Line Items]          
Gain on sale of assets 0   0    
Morenci | Operating Segments | Unaffiliated Customers          
Segment Reporting Information [Line Items]          
Revenues 17 63 29 146  
Morenci | Operating Segments | Intersegment Customers          
Segment Reporting Information [Line Items]          
Revenues 739 559 1,503 1,053  
Cerro Verde | Operating Segments          
Segment Reporting Information [Line Items]          
Revenues 1,487 1,029 2,868 2,120  
Production and delivery 664 590 1,315 1,177  
Depreciation, depletion and amortization (DD&A) 82 94 168 185  
Selling, general and administrative expenses 1 1 3 3  
Exploration and research expenses 4 4 8 6  
Environmental obligations and shutdown costs       0  
Gain on PTFI mud rush incident insurance settlement     0    
Operating income 736 340 1,374 749  
Total assets 9,013 8,385 9,013 8,385  
Segment capital expenditures 82 78 156 152  
Cerro Verde | Operating Segments | South America          
Segment Reporting Information [Line Items]          
Gain on sale of assets 0   0    
Cerro Verde | Operating Segments | Unaffiliated Customers          
Segment Reporting Information [Line Items]          
Revenues 1,159 836 2,377 1,753  
Cerro Verde | Operating Segments | Intersegment Customers          
Segment Reporting Information [Line Items]          
Revenues 328 193 491 367  
Grasberg Segment | Operating Segments          
Segment Reporting Information [Line Items]          
Revenues 1,483 3,417 2,555 4,987  
Production and delivery 724 1,124 1,434 1,702  
Depreciation, depletion and amortization (DD&A) 228 389 422 575  
Selling, general and administrative expenses 32 35 57 62  
Exploration and research expenses 0 1 0 3  
Environmental obligations and shutdown costs       0  
Gain on PTFI mud rush incident insurance settlement     (699)    
Operating income 499 1,868 1,341 2,645  
Total assets 27,949 27,781 27,949 27,781  
Segment capital expenditures 516 740 972 1,444  
Grasberg Segment | Operating Segments | Indonesia          
Segment Reporting Information [Line Items]          
Gain on sale of assets 0   0    
Grasberg Segment | Operating Segments | Unaffiliated Customers          
Segment Reporting Information [Line Items]          
Revenues 1,482 3,419 2,554 4,983  
Grasberg Segment | Operating Segments | Intersegment Customers          
Segment Reporting Information [Line Items]          
Revenues 1 (2) 1 4  
Rod and Refining Segment | Operating Segments          
Segment Reporting Information [Line Items]          
Revenues 2,239 1,701 4,301 3,333  
Production and delivery 2,215 1,693 4,261 3,315  
Depreciation, depletion and amortization (DD&A) 2 1 3 2  
Selling, general and administrative expenses 0 0 0 0  
Exploration and research expenses 0 0 0 0  
Gain on sale of assets 0   0    
Environmental obligations and shutdown costs       0  
Gain on PTFI mud rush incident insurance settlement     0    
Operating income 22 7 37 16  
Total assets 390 432 390 432  
Segment capital expenditures 14 26 28 43  
Rod and Refining Segment | Operating Segments | Unaffiliated Customers          
Segment Reporting Information [Line Items]          
Revenues 2,228 1,692 4,280 3,316  
Rod and Refining Segment | Operating Segments | Intersegment Customers          
Segment Reporting Information [Line Items]          
Revenues 11 9 21 17  
Atlantic Copper Smelting and Refining Segment | Operating Segments          
Segment Reporting Information [Line Items]          
Revenues 1,030 818 1,999 1,573  
Production and delivery 1,007 791 1,936 1,525  
Depreciation, depletion and amortization (DD&A) 7 7 14 14  
Selling, general and administrative expenses 8 7 19 16  
Exploration and research expenses 0 0 0 0  
Gain on sale of assets (18)   (18)    
Environmental obligations and shutdown costs       0  
Gain on PTFI mud rush incident insurance settlement     0    
Operating income 26 13 48 18  
Total assets 2,054 1,508 2,054 1,508  
Segment capital expenditures 67 45 123 88  
Atlantic Copper Smelting and Refining Segment | Operating Segments | Unaffiliated Customers          
Segment Reporting Information [Line Items]          
Revenues 1,024 815 1,990 1,567  
Atlantic Copper Smelting and Refining Segment | Operating Segments | Intersegment Customers          
Segment Reporting Information [Line Items]          
Revenues $ 6 $ 3 $ 9 $ 6