v3.26.1
Contractual Obligations and Commitments - Summary of Other Contractual Obligations and Commitments (Detail) - USD ($)
$ in Thousands
 6 Months Ended
Jun. 30, 2026
Dec. 31, 2025
Disclosure of contractual obligations [line items]    
Bank debt $ 1,969,282 $ 0
Total contractual obligations 4,622,997  
Equity investments [member]    
Disclosure of contractual obligations [line items]    
Total contractual obligations 23,115  
Bank debt [member]    
Disclosure of contractual obligations [line items]    
Bank debt 1,972,000  
Interest expense [member]    
Disclosure of contractual obligations [line items]    
Interest 245,230  
Leases liabilities [member]    
Disclosure of contractual obligations [line items]    
Total contractual obligations 9,422  
Salobo [member] | Mineral Stream Interest And Royalty Payments [Member]    
Disclosure of contractual obligations [line items]    
Total contractual obligations 80,000  
Copper World [Member] | Mineral Stream Interest And Royalty Payments [Member]    
Disclosure of contractual obligations [line items]    
Total contractual obligations 231,151  
Marmato [member] | Mineral Stream Interest And Royalty Payments [Member]    
Disclosure of contractual obligations [line items]    
Total contractual obligations 41,968  
Santo Domingo [Member] | Mineral Stream Interest And Royalty Payments [Member]    
Disclosure of contractual obligations [line items]    
Total contractual obligations 290,000  
El Domo [Member] | Mineral Stream Interest And Royalty Payments [Member]    
Disclosure of contractual obligations [line items]    
Total contractual obligations 131,625  
Marathon [Member] | Mineral Stream Interest And Royalty Payments [Member]    
Disclosure of contractual obligations [line items]    
Total contractual obligations 140,746  
Cangrejos [Member] | Mineral Stream Interest And Royalty Payments [Member]    
Disclosure of contractual obligations [line items]    
Total contractual obligations 168,840  
Curraghinalt [Member] | Mineral Stream Interest And Royalty Payments [Member]    
Disclosure of contractual obligations [line items]    
Total contractual obligations 55,000  
Loma de La Plata [member] | Mineral Stream Interest And Royalty Payments [Member]    
Disclosure of contractual obligations [line items]    
Total contractual obligations 32,400  
Spring Valley [Member] | Mineral Stream Interest And Royalty Payments [Member]    
Disclosure of contractual obligations [line items]    
Total contractual obligations 570,000  
Kudz Ze Kayah [Member] | Mineral Stream Interest And Royalty Payments [Member]    
Disclosure of contractual obligations [line items]    
Total contractual obligations 15,000  
Jervois [Member] | Mineral Stream Interest And Royalty Payments [Member]    
Disclosure of contractual obligations [line items]    
Total contractual obligations 259,000  
Cotabambas [member] | Mineral Stream Interest And Royalty Payments [Member]    
Disclosure of contractual obligations [line items]    
Total contractual obligations 126,000  
Toroparu [member] | Mineral Stream Interest And Royalty Payments [Member]    
Disclosure of contractual obligations [line items]    
Total contractual obligations 138,000  
Kutcho [member] | Mineral Stream Interest And Royalty Payments [Member]    
Disclosure of contractual obligations [line items]    
Total contractual obligations 58,000  
Spanish Mountain [Member] | Mineral Stream Interest And Royalty Payments [Member]    
Disclosure of contractual obligations [line items]    
Total contractual obligations 32,500  
Cipango [Member] | Mineral Stream Interest And Royalty Payments [Member]    
Disclosure of contractual obligations [line items]    
Total contractual obligations 3,000  
2026 [member]    
Disclosure of contractual obligations [line items]    
Total contractual obligations 384,885  
2026 [member] | Equity investments [member]    
Disclosure of contractual obligations [line items]    
Total contractual obligations 23,115  
2026 [member] | Interest expense [member]    
Disclosure of contractual obligations [line items]    
Interest 49,411  
2026 [member] | Leases liabilities [member]    
Disclosure of contractual obligations [line items]    
Total contractual obligations 516  
2026 [member] | Marmato [member] | Mineral Stream Interest And Royalty Payments [Member]    
Disclosure of contractual obligations [line items]    
Total contractual obligations 41,968  
2026 [member] | El Domo [Member] | Mineral Stream Interest And Royalty Payments [Member]    
Disclosure of contractual obligations [line items]    
Total contractual obligations 43,875  
2026 [member] | Spring Valley [Member] | Mineral Stream Interest And Royalty Payments [Member]    
Disclosure of contractual obligations [line items]    
Total contractual obligations 210,000  
2026 [member] | Jervois [Member] | Mineral Stream Interest And Royalty Payments [Member]    
Disclosure of contractual obligations [line items]    
Total contractual obligations 16,000  
2027 - 2028 [member]    
Disclosure of contractual obligations [line items]    
Total contractual obligations 3,032,561  
2027 - 2028 [member] | Bank debt [member]    
Disclosure of contractual obligations [line items]    
Bank debt 1,500,000  
2027 - 2028 [member] | Interest expense [member]    
Disclosure of contractual obligations [line items]    
Interest 161,628  
2027 - 2028 [member] | Leases liabilities [member]    
Disclosure of contractual obligations [line items]    
Total contractual obligations 2,010  
2027 - 2028 [member] | Salobo [member] | Mineral Stream Interest And Royalty Payments [Member]    
Disclosure of contractual obligations [line items]    
Total contractual obligations 8,000  
2027 - 2028 [member] | Copper World [Member] | Mineral Stream Interest And Royalty Payments [Member]    
Disclosure of contractual obligations [line items]    
Total contractual obligations 231,151  
2027 - 2028 [member] | Santo Domingo [Member] | Mineral Stream Interest And Royalty Payments [Member]    
Disclosure of contractual obligations [line items]    
Total contractual obligations 290,000  
2027 - 2028 [member] | El Domo [Member] | Mineral Stream Interest And Royalty Payments [Member]    
Disclosure of contractual obligations [line items]    
Total contractual obligations 87,750  
2027 - 2028 [member] | Marathon [Member] | Mineral Stream Interest And Royalty Payments [Member]    
Disclosure of contractual obligations [line items]    
Total contractual obligations 98,522  
2027 - 2028 [member] | Spring Valley [Member] | Mineral Stream Interest And Royalty Payments [Member]    
Disclosure of contractual obligations [line items]    
Total contractual obligations 360,000  
2027 - 2028 [member] | Kudz Ze Kayah [Member] | Mineral Stream Interest And Royalty Payments [Member]    
Disclosure of contractual obligations [line items]    
Total contractual obligations 15,000  
2027 - 2028 [member] | Jervois [Member] | Mineral Stream Interest And Royalty Payments [Member]    
Disclosure of contractual obligations [line items]    
Total contractual obligations 243,000  
2027 - 2028 [member] | Spanish Mountain [Member] | Mineral Stream Interest And Royalty Payments [Member]    
Disclosure of contractual obligations [line items]    
Total contractual obligations 32,500  
2027 - 2028 [member] | Cipango [Member] | Mineral Stream Interest And Royalty Payments [Member]    
Disclosure of contractual obligations [line items]    
Total contractual obligations 3,000  
2029 - 2030 [member]    
Disclosure of contractual obligations [line items]    
Total contractual obligations 263,354  
2029 - 2030 [member] | Interest expense [member]    
Disclosure of contractual obligations [line items]    
Interest 34,191  
2029 - 2030 [member] | Leases liabilities [member]    
Disclosure of contractual obligations [line items]    
Total contractual obligations 2,099  
2029 - 2030 [member] | Salobo [member] | Mineral Stream Interest And Royalty Payments [Member]    
Disclosure of contractual obligations [line items]    
Total contractual obligations 16,000  
2029 - 2030 [member] | Marathon [Member] | Mineral Stream Interest And Royalty Payments [Member]    
Disclosure of contractual obligations [line items]    
Total contractual obligations 42,224  
2029 - 2030 [member] | Cangrejos [Member] | Mineral Stream Interest And Royalty Payments [Member]    
Disclosure of contractual obligations [line items]    
Total contractual obligations 168,840  
After 2030 [member]    
Disclosure of contractual obligations [line items]    
Total contractual obligations 942,197  
After 2030 [member] | Bank debt [member]    
Disclosure of contractual obligations [line items]    
Bank debt 472,000  
After 2030 [member] | Leases liabilities [member]    
Disclosure of contractual obligations [line items]    
Total contractual obligations 4,797  
After 2030 [member] | Salobo [member] | Mineral Stream Interest And Royalty Payments [Member]    
Disclosure of contractual obligations [line items]    
Total contractual obligations 56,000  
After 2030 [member] | Curraghinalt [Member] | Mineral Stream Interest And Royalty Payments [Member]    
Disclosure of contractual obligations [line items]    
Total contractual obligations 55,000  
After 2030 [member] | Loma de La Plata [member] | Mineral Stream Interest And Royalty Payments [Member]    
Disclosure of contractual obligations [line items]    
Total contractual obligations 32,400  
After 2030 [member] | Cotabambas [member] | Mineral Stream Interest And Royalty Payments [Member]    
Disclosure of contractual obligations [line items]    
Total contractual obligations 126,000  
After 2030 [member] | Toroparu [member] | Mineral Stream Interest And Royalty Payments [Member]    
Disclosure of contractual obligations [line items]    
Total contractual obligations 138,000  
After 2030 [member] | Kutcho [member] | Mineral Stream Interest And Royalty Payments [Member]    
Disclosure of contractual obligations [line items]    
Total contractual obligations $ 58,000