v3.26.1
Mineral Stream Interests - Schedule of Mineral Stream Interests (Detail) - USD ($)
$ in Thousands
6 Months Ended 12 Months Ended
Jun. 30, 2026
Dec. 31, 2025
Disclosure Of Mineral Stream Interests [line items]    
Beginning balance $ 7,397,149  
Ending balance 11,731,206 $ 7,397,149
Gold interests [member]    
Disclosure Of Mineral Stream Interests [line items]    
Beginning balance 5,284,790  
Ending balance 5,406,362 5,284,790
Gold interests [member] | Salobo [member]    
Disclosure Of Mineral Stream Interests [line items]    
Beginning balance 2,620,710  
Ending balance 2,568,665 2,620,710
Gold interests [member] | Sudbury [member]    
Disclosure Of Mineral Stream Interests [line items]    
Beginning balance 218,494  
Ending balance 206,067 218,494
Gold interests [member] | Constancia [member]    
Disclosure Of Mineral Stream Interests [line items]    
Beginning balance 52,284  
Ending balance 47,588 52,284
Gold interests [member] | San Dimas [member]    
Disclosure Of Mineral Stream Interests [line items]    
Beginning balance 125,218  
Ending balance 119,371 125,218
Gold interests [member] | Stillwater [member]    
Disclosure Of Mineral Stream Interests [line items]    
Beginning balance 204,202  
Ending balance 202,680 204,202
Gold interests [member] | Blackwater [Member]    
Disclosure Of Mineral Stream Interests [line items]    
Beginning balance 331,048  
Ending balance 324,284 331,048
Gold interests [member] | Platreef [Member]    
Disclosure Of Mineral Stream Interests [line items]    
Beginning balance 275,702  
Ending balance 275,702 275,702
Gold interests [member] | Other gold interests [member]    
Disclosure Of Mineral Stream Interests [line items]    
Beginning balance 1,457,132  
Ending balance 1,662,005 1,457,132
Gold interests [member] | Cost [member]    
Disclosure Of Mineral Stream Interests [line items]    
Beginning balance 6,926,825 5,688,721
Additions (Reductions) 219,192 1,254,110
Disposal (19,360) (16,006)
Ending balance 7,126,657 6,926,825
Gold interests [member] | Cost [member] | Salobo [member]    
Disclosure Of Mineral Stream Interests [line items]    
Beginning balance 3,573,911 3,429,911
Additions (Reductions) 0 144,000
Disposal 0 0
Ending balance 3,573,911 3,573,911
Gold interests [member] | Cost [member] | Sudbury [member]    
Disclosure Of Mineral Stream Interests [line items]    
Beginning balance 623,864 623,864
Additions (Reductions) 0 0
Disposal 0 0
Ending balance 623,864 623,864
Gold interests [member] | Cost [member] | Constancia [member]    
Disclosure Of Mineral Stream Interests [line items]    
Beginning balance 140,058 140,058
Additions (Reductions) 0 0
Disposal 0 0
Ending balance 140,058 140,058
Gold interests [member] | Cost [member] | San Dimas [member]    
Disclosure Of Mineral Stream Interests [line items]    
Beginning balance 220,429 220,429
Additions (Reductions) 0 0
Disposal 0 0
Ending balance 220,429 220,429
Gold interests [member] | Cost [member] | Stillwater [member]    
Disclosure Of Mineral Stream Interests [line items]    
Beginning balance 239,352 239,352
Additions (Reductions) 0 0
Disposal 0 0
Ending balance 239,352 239,352
Gold interests [member] | Cost [member] | Blackwater [Member]    
Disclosure Of Mineral Stream Interests [line items]    
Beginning balance 340,231 340,231
Additions (Reductions) 0 0
Disposal 0 0
Ending balance 340,231 340,231
Gold interests [member] | Cost [member] | Platreef [Member]    
Disclosure Of Mineral Stream Interests [line items]    
Beginning balance 275,702 275,702
Additions (Reductions) 0 0
Disposal 0 0
Ending balance 275,702 275,702
Gold interests [member] | Cost [member] | Other gold interests [member]    
Disclosure Of Mineral Stream Interests [line items]    
Beginning balance 1,513,278 419,174
Additions (Reductions) 219,192 1,110,110
Disposal (19,360) (16,006)
Ending balance 1,713,110 1,513,278
Gold interests [member] | Accumulated Depletion & Impairment [member]    
Disclosure Of Mineral Stream Interests [line items]    
Beginning balance (1,642,035) (1,462,102)
Disposal 19,360  
Depletion (97,620) (179,933)
Ending balance (1,720,295) (1,642,035)
Gold interests [member] | Accumulated Depletion & Impairment [member] | Salobo [member]    
Disclosure Of Mineral Stream Interests [line items]    
Beginning balance (953,201) (834,426)
Disposal 0  
Depletion (52,045) (118,775)
Ending balance (1,005,246) (953,201)
Gold interests [member] | Accumulated Depletion & Impairment [member] | Sudbury [member]    
Disclosure Of Mineral Stream Interests [line items]    
Beginning balance (405,370) (382,313)
Disposal 0  
Depletion (12,427) (23,057)
Ending balance (417,797) (405,370)
Gold interests [member] | Accumulated Depletion & Impairment [member] | Constancia [member]    
Disclosure Of Mineral Stream Interests [line items]    
Beginning balance (87,774) (75,732)
Disposal 0  
Depletion (4,696) (12,042)
Ending balance (92,470) (87,774)
Gold interests [member] | Accumulated Depletion & Impairment [member] | San Dimas [member]    
Disclosure Of Mineral Stream Interests [line items]    
Beginning balance (95,211) (83,948)
Disposal 0  
Depletion (5,847) (11,263)
Ending balance (101,058) (95,211)
Gold interests [member] | Accumulated Depletion & Impairment [member] | Stillwater [member]    
Disclosure Of Mineral Stream Interests [line items]    
Beginning balance (35,150) (31,892)
Disposal 0  
Depletion (1,522) (3,258)
Ending balance (36,672) (35,150)
Gold interests [member] | Accumulated Depletion & Impairment [member] | Blackwater [Member]    
Disclosure Of Mineral Stream Interests [line items]    
Beginning balance (9,183) 0
Disposal 0  
Depletion (6,764) (9,183)
Ending balance (15,947) (9,183)
Gold interests [member] | Accumulated Depletion & Impairment [member] | Platreef [Member]    
Disclosure Of Mineral Stream Interests [line items]    
Beginning balance 0 0
Disposal 0  
Depletion 0 0
Ending balance 0 0
Gold interests [member] | Accumulated Depletion & Impairment [member] | Other gold interests [member]    
Disclosure Of Mineral Stream Interests [line items]    
Beginning balance (56,146) (53,791)
Disposal 19,360  
Depletion (14,319) (2,355)
Ending balance (51,105) (56,146)
Silver interests [member]    
Disclosure Of Mineral Stream Interests [line items]    
Beginning balance 1,541,741  
Ending balance 5,765,818 1,541,741
Silver interests [member] | Penasquito [member]    
Disclosure Of Mineral Stream Interests [line items]    
Beginning balance 206,866  
Ending balance 185,656 206,866
Silver interests [member] | Antamina [member]    
Disclosure Of Mineral Stream Interests [line items]    
Beginning balance 459,083  
Ending balance 4,708,329 459,083
Silver interests [member] | Constancia [member]    
Disclosure Of Mineral Stream Interests [line items]    
Beginning balance 151,403  
Ending balance 144,161 151,403
Silver interests [member] | Blackwater [Member]    
Disclosure Of Mineral Stream Interests [line items]    
Beginning balance 167,502  
Ending balance 165,522 167,502
Silver interests [member] | Other silver interests [member]    
Disclosure Of Mineral Stream Interests [line items]    
Beginning balance 556,887  
Ending balance 562,150 556,887
Silver interests [member] | Cost [member]    
Disclosure Of Mineral Stream Interests [line items]    
Beginning balance 3,067,333 2,983,979
Additions (Reductions) 4,314,219 83,354
Disposal (3,048) 0
Ending balance 7,378,504 3,067,333
Silver interests [member] | Cost [member] | Penasquito [member]    
Disclosure Of Mineral Stream Interests [line items]    
Beginning balance 524,626 524,626
Additions (Reductions) 0 0
Disposal 0 0
Ending balance 524,626 524,626
Silver interests [member] | Cost [member] | Antamina [member]    
Disclosure Of Mineral Stream Interests [line items]    
Beginning balance 900,343 900,343
Additions (Reductions) 4,300,568 0
Disposal 0 0
Ending balance 5,200,911 900,343
Silver interests [member] | Cost [member] | Constancia [member]    
Disclosure Of Mineral Stream Interests [line items]    
Beginning balance 302,948 302,948
Additions (Reductions) 0 0
Disposal 0 0
Ending balance 302,948 302,948
Silver interests [member] | Cost [member] | Blackwater [Member]    
Disclosure Of Mineral Stream Interests [line items]    
Beginning balance 170,947 140,908
Additions (Reductions) 0 30,039
Disposal 0 0
Ending balance 170,947 170,947
Silver interests [member] | Cost [member] | Other silver interests [member]    
Disclosure Of Mineral Stream Interests [line items]    
Beginning balance 1,168,469 1,115,154
Additions (Reductions) 13,651 53,315
Disposal (3,048) 0
Ending balance 1,179,072 1,168,469
Silver interests [member] | Accumulated Depletion & Impairment [member]    
Disclosure Of Mineral Stream Interests [line items]    
Beginning balance (1,525,592) (1,420,735)
Disposal 3,048  
Depletion (90,142) (104,857)
Ending balance (1,612,686) (1,525,592)
Silver interests [member] | Accumulated Depletion & Impairment [member] | Penasquito [member]    
Disclosure Of Mineral Stream Interests [line items]    
Beginning balance (317,760) (280,161)
Disposal 0  
Depletion (21,210) (37,599)
Ending balance (338,970) (317,760)
Silver interests [member] | Accumulated Depletion & Impairment [member] | Antamina [member]    
Disclosure Of Mineral Stream Interests [line items]    
Beginning balance (441,260) (409,572)
Disposal 0  
Depletion (51,322) (31,688)
Ending balance (492,582) (441,260)
Silver interests [member] | Accumulated Depletion & Impairment [member] | Constancia [member]    
Disclosure Of Mineral Stream Interests [line items]    
Beginning balance (151,545) (137,570)
Disposal 0  
Depletion (7,242) (13,975)
Ending balance (158,787) (151,545)
Silver interests [member] | Accumulated Depletion & Impairment [member] | Blackwater [Member]    
Disclosure Of Mineral Stream Interests [line items]    
Beginning balance (3,445) 0
Disposal 0  
Depletion (1,980) (3,445)
Ending balance (5,425) (3,445)
Silver interests [member] | Accumulated Depletion & Impairment [member] | Other silver interests [member]    
Disclosure Of Mineral Stream Interests [line items]    
Beginning balance (611,582) (593,432)
Disposal 3,048  
Depletion (8,388) (18,150)
Ending balance (616,922) (611,582)
Palladium interest [member]    
Disclosure Of Mineral Stream Interests [line items]    
Beginning balance 287,706  
Ending balance 285,258 287,706
Palladium interest [member] | Stillwater [member]    
Disclosure Of Mineral Stream Interests [line items]    
Beginning balance 208,892  
Ending balance 206,444 208,892
Palladium interest [member] | Platreef [Member]    
Disclosure Of Mineral Stream Interests [line items]    
Beginning balance 78,814  
Ending balance 78,814 78,814
Palladium interest [member] | Cost [member]    
Disclosure Of Mineral Stream Interests [line items]    
Beginning balance 342,535 342,535
Additions (Reductions) 0 0
Disposal 0 0
Ending balance 342,535 342,535
Palladium interest [member] | Cost [member] | Stillwater [member]    
Disclosure Of Mineral Stream Interests [line items]    
Beginning balance 263,721 263,721
Additions (Reductions) 0 0
Disposal 0 0
Ending balance 263,721 263,721
Palladium interest [member] | Cost [member] | Platreef [Member]    
Disclosure Of Mineral Stream Interests [line items]    
Beginning balance 78,814 78,814
Additions (Reductions) 0 0
Disposal 0 0
Ending balance 78,814 78,814
Palladium interest [member] | Accumulated Depletion & Impairment [member]    
Disclosure Of Mineral Stream Interests [line items]    
Beginning balance (54,829) (50,542)
Disposal 0  
Depletion (2,448) (4,287)
Ending balance (57,277) (54,829)
Palladium interest [member] | Accumulated Depletion & Impairment [member] | Stillwater [member]    
Disclosure Of Mineral Stream Interests [line items]    
Beginning balance (54,829) (50,542)
Disposal 0  
Depletion (2,448) (4,287)
Ending balance (57,277) (54,829)
Palladium interest [member] | Accumulated Depletion & Impairment [member] | Platreef [Member]    
Disclosure Of Mineral Stream Interests [line items]    
Beginning balance 0 0
Disposal 0  
Depletion 0 0
Ending balance 0 0
Platinum Interests [member]    
Disclosure Of Mineral Stream Interests [line items]    
Beginning balance 67,035  
Ending balance 67,035 67,035
Platinum Interests [member] | Marathon [Member]    
Disclosure Of Mineral Stream Interests [line items]    
Beginning balance 9,451  
Ending balance 9,451 9,451
Platinum Interests [member] | Platreef [Member]    
Disclosure Of Mineral Stream Interests [line items]    
Beginning balance 57,584  
Ending balance 57,584 57,584
Platinum Interests [member] | Cost [member]    
Disclosure Of Mineral Stream Interests [line items]    
Beginning balance 67,035 67,035
Additions (Reductions) 0 0
Disposal 0 0
Ending balance 67,035 67,035
Platinum Interests [member] | Cost [member] | Marathon [Member]    
Disclosure Of Mineral Stream Interests [line items]    
Beginning balance 9,451 9,451
Additions (Reductions) 0 0
Disposal 0 0
Ending balance 9,451 9,451
Platinum Interests [member] | Cost [member] | Platreef [Member]    
Disclosure Of Mineral Stream Interests [line items]    
Beginning balance 57,584 57,584
Additions (Reductions) 0 0
Disposal 0 0
Ending balance 57,584 57,584
Platinum Interests [member] | Accumulated Depletion & Impairment [member]    
Disclosure Of Mineral Stream Interests [line items]    
Beginning balance 0 0
Disposal 0  
Depletion 0 0
Ending balance 0 0
Platinum Interests [member] | Accumulated Depletion & Impairment [member] | Marathon [Member]    
Disclosure Of Mineral Stream Interests [line items]    
Beginning balance 0 0
Disposal 0  
Depletion 0 0
Ending balance 0 0
Platinum Interests [member] | Accumulated Depletion & Impairment [member] | Platreef [Member]    
Disclosure Of Mineral Stream Interests [line items]    
Beginning balance 0 0
Disposal 0  
Depletion 0 0
Ending balance 0 0
Cobalt Interests [member]    
Disclosure Of Mineral Stream Interests [line items]    
Beginning balance 215,877  
Ending balance 206,733 215,877
Cobalt Interests [member] | Voisey's Bay [member]    
Disclosure Of Mineral Stream Interests [line items]    
Beginning balance 215,877  
Ending balance 206,733 215,877
Cobalt Interests [member] | Cost [member] | Voisey's Bay [member]    
Disclosure Of Mineral Stream Interests [line items]    
Beginning balance 393,422 393,422
Additions (Reductions) 0 0
Disposal 0 0
Ending balance 393,422 393,422
Cobalt Interests [member] | Accumulated Depletion & Impairment [member] | Voisey's Bay [member]    
Disclosure Of Mineral Stream Interests [line items]    
Beginning balance (177,545) (162,733)
Disposal 0  
Depletion (9,144) (14,812)
Ending balance (186,689) (177,545)
Mineral Stream Interests [member]    
Disclosure Of Mineral Stream Interests [line items]    
Beginning balance 7,397,149  
Ending balance 11,731,206 7,397,149
Mineral Stream Interests [member] | Cost [member]    
Disclosure Of Mineral Stream Interests [line items]    
Beginning balance 10,797,150 9,475,692
Additions (Reductions) 4,533,411 1,337,464
Disposal (22,408) (16,006)
Ending balance 15,308,153 10,797,150
Mineral Stream Interests [member] | Accumulated Depletion & Impairment [member]    
Disclosure Of Mineral Stream Interests [line items]    
Beginning balance (3,400,001) 3,096,112
Disposal 22,408  
Depletion 199,354 303,889
Ending balance $ 3,576,947 $ (3,400,001)