v3.26.3
Business Segments (Segment Reporting) (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Dec. 31, 2025
Segment Reporting [Line Items]          
Revenues $ 7,546 $ 6,972 $ 20,809 $ 20,282  
Depreciation, depletion and amortization (DD&A) 520 625 1,557 1,759  
Selling, general and administrative expenses 131 131 428 412  
Exploration and research expenses 55 55 146 140  
Gain on sale of assets 0 (16) (18) (16)  
Environmental obligations and shutdown costs 8 0 38 37  
Gain on PT Freeport Indonesia (PTFI) mud rush incident insurance settlement 0 0 (699) 0  
Operating income 2,353 1,972 6,493 5,707  
Corporate Expenses And Elimination Of Intersegment Operating Income (Loss) (151) (155) (471) (308)  
Interest expense, net (86) (107) (295) (259)  
Other Nonoperating Income (Expense) 25 59 58 158  
Income before income taxes and equity in affiliated companies’ net earnings (losses) 2,292 1,924 6,256 5,606  
Total assets 61,479 56,828 61,479 56,828 $ 58,167
Segment capital expenditures 1,159 1,056 3,236 3,489  
Mud Rush          
Segment Reporting [Line Items]          
Recovery costs 244 171 934 171  
DD&A, idle facilities 64 24 236 24  
Segment Reporting, Reconciling Item, Excluding Corporate Nonsegment          
Segment Reporting [Line Items]          
Depreciation, depletion and amortization (DD&A) 152 132 458 394  
Operating income 642 226 1,775 445  
Total assets 37,349 36,065 37,349 36,065  
Segment capital expenditures 425 346 1,115 920  
Segment Reporting, Reconciling Item, Excluding Corporate Nonsegment | Unaffiliated Customers          
Segment Reporting [Line Items]          
Revenues 1,051 730 3,084 2,275  
Intersegment          
Segment Reporting [Line Items]          
Revenues (3,142) (2,351) (8,602) (6,335)  
Total assets (19,811) (20,284) (19,811) (20,284)  
Operating Segments          
Segment Reporting [Line Items]          
Revenues 7,731 7,139 20,986 20,351  
Operating income 1,862 1,901 5,189 5,570  
Total assets 43,941 41,047 43,941 41,047  
Segment capital expenditures 719 709 2,092 2,565  
Operating Segments | Unaffiliated Customers          
Segment Reporting [Line Items]          
Revenues 6,495 6,242 17,725 18,007  
Operating Segments | Intersegment Customers          
Segment Reporting [Line Items]          
Revenues 1,236 897 3,261 2,344  
Segment Reporting, Reconciling Item, Corporate Nonsegment          
Segment Reporting [Line Items]          
Depreciation, depletion and amortization (DD&A) 1 1 1 1  
Segment capital expenditures 15 1 29 4  
Segment Reporting, Reconciling Item, Corporate Nonsegment | Intersegment Customers          
Segment Reporting [Line Items]          
Revenues 1,906 1,454 5,341 3,991  
Morenci | Operating Segments          
Segment Reporting [Line Items]          
Revenues 883 699 2,415 1,898  
Production and delivery 527 499 1,389 1,353  
Depreciation, depletion and amortization (DD&A) 61 55 185 151  
Selling, general and administrative expenses 0 0 1 1  
Exploration and research expenses 7 11 25 25  
Environmental obligations and shutdown costs       (7)  
Gain on PT Freeport Indonesia (PTFI) mud rush incident insurance settlement     0    
Operating income 288 134 815 375  
Total assets 3,630 3,289 3,630 3,289  
Segment capital expenditures 85 66 179 195  
Morenci | Operating Segments | North America          
Segment Reporting [Line Items]          
Gain on sale of assets     0    
Morenci | Operating Segments | Unaffiliated Customers          
Segment Reporting [Line Items]          
Revenues 19 46 48 192  
Morenci | Operating Segments | Intersegment Customers          
Segment Reporting [Line Items]          
Revenues 864 653 2,367 1,706  
Cerro Verde | Operating Segments          
Segment Reporting [Line Items]          
Revenues 1,750 1,205 4,618 3,325  
Production and delivery 718 636 2,033 1,813  
Depreciation, depletion and amortization (DD&A) 89 97 257 282  
Selling, general and administrative expenses 2 2 5 5  
Exploration and research expenses 5 3 13 9  
Environmental obligations and shutdown costs       0  
Gain on PT Freeport Indonesia (PTFI) mud rush incident insurance settlement     0    
Operating income 936 467 2,310 1,216  
Total assets 9,176 8,290 9,176 8,290  
Segment capital expenditures 84 99 240 251  
Cerro Verde | Operating Segments | South America          
Segment Reporting [Line Items]          
Gain on sale of assets     0    
Cerro Verde | Operating Segments | Unaffiliated Customers          
Segment Reporting [Line Items]          
Revenues 1,392 979 3,769 2,732  
Cerro Verde | Operating Segments | Intersegment Customers          
Segment Reporting [Line Items]          
Revenues 358 226 849 593  
Grasberg Segment | Operating Segments          
Segment Reporting [Line Items]          
Revenues 1,476 2,675 4,031 7,662  
Production and delivery 623 1,024 2,057 2,726  
Depreciation, depletion and amortization (DD&A) 210 331 632 906  
Selling, general and administrative expenses 27 36 84 98  
Exploration and research expenses 0 2 0 5  
Environmental obligations and shutdown costs       0  
Gain on PT Freeport Indonesia (PTFI) mud rush incident insurance settlement     (699)    
Operating income 616 1,282 1,957 3,927  
Total assets 28,581 27,464 28,581 27,464  
Segment capital expenditures 463 483 1,435 1,927  
Grasberg Segment | Operating Segments | Indonesia          
Segment Reporting [Line Items]          
Gain on sale of assets     0    
Grasberg Segment | Operating Segments | Unaffiliated Customers          
Segment Reporting [Line Items]          
Revenues 1,476 2,675 4,030 7,658  
Grasberg Segment | Operating Segments | Intersegment Customers          
Segment Reporting [Line Items]          
Revenues 0 0 1 4  
Rod and Refining Segment | Operating Segments          
Segment Reporting [Line Items]          
Revenues 2,369 1,786 6,670 5,119  
Production and delivery 2,352 1,773 6,613 5,088  
Depreciation, depletion and amortization (DD&A) 1 2 4 4  
Selling, general and administrative expenses 0 0 0 0  
Exploration and research expenses 0 0 0 0  
Gain on sale of assets     0    
Environmental obligations and shutdown costs       0  
Gain on PT Freeport Indonesia (PTFI) mud rush incident insurance settlement     0    
Operating income 16 11 53 27  
Total assets 418 389 418 389  
Segment capital expenditures 14 19 42 62  
Rod and Refining Segment | Operating Segments | Unaffiliated Customers          
Segment Reporting [Line Items]          
Revenues 2,359 1,774 6,639 5,090  
Rod and Refining Segment | Operating Segments | Intersegment Customers          
Segment Reporting [Line Items]          
Revenues 10 12 31 29  
Atlantic Copper Smelting and Refining Segment | Operating Segments          
Segment Reporting [Line Items]          
Revenues 1,253 774 3,252 2,347  
Production and delivery 1,234 753 3,170 2,278  
Depreciation, depletion and amortization (DD&A) 6 7 20 21  
Selling, general and administrative expenses 7 7 26 23  
Exploration and research expenses 0 0 0 0  
Gain on sale of assets     (18)    
Environmental obligations and shutdown costs       0  
Gain on PT Freeport Indonesia (PTFI) mud rush incident insurance settlement     0    
Operating income 6 7 54 25  
Total assets 2,136 1,615 2,136 1,615  
Segment capital expenditures 73 42 196 130  
Atlantic Copper Smelting and Refining Segment | Operating Segments | Unaffiliated Customers          
Segment Reporting [Line Items]          
Revenues 1,249 768 3,239 2,335  
Atlantic Copper Smelting and Refining Segment | Operating Segments | Intersegment Customers          
Segment Reporting [Line Items]          
Revenues $ 4 $ 6 $ 13 $ 12