Supplemental Guarantor Information Condensed Consolidated Balance Sheets (Details) - USD ($) $ in Thousands		Jun. 30, 2026	Dec. 31, 2025
Condensed Financial Statements, Captions [Line Items]
Current assets		$ 1,775,287	$ 972,677
Current liabilities		485,887	393,144
Non-current liabilities		4,308,354	989,487
Coeur Mining, Inc. | Subsidiary Guarantors
Condensed Financial Statements, Captions [Line Items]
Current assets		384,440	375,741	[1]
Non-current assets	[2]	8,487,248	1,110,145	[1]
Non-guarantor intercompany assets		4,885	3,008	[1]
Current liabilities		23,351	33,646	[1]
Non-current liabilities		747,643	311,921	[1]
Non-guarantor intercompany liabilities		288,014	1,423	[1]
Coeur Mining, Inc. | 2032 Subsidiary Guarantors
Condensed Financial Statements, Captions [Line Items]
Current assets		384,440
Non-current assets	[3]	8,487,248
Non-guarantor intercompany assets		4,885
Current liabilities		23,351
Non-current liabilities		747,643
Non-guarantor intercompany liabilities		288,014
New Gold Inc. | Subsidiary Guarantors
Condensed Financial Statements, Captions [Line Items]
Current assets		996,431	291,673	[1]
Non-current assets	[2]	11,462,792	1,494,435	[1]
Non-guarantor intercompany assets		0	0	[1]
Current liabilities		295,365	166,385	[1]
Non-current liabilities		3,129,631	216,889	[1]
Non-guarantor intercompany liabilities		0	1,608	[1]
New Gold Inc. | 2032 Subsidiary Guarantors
Condensed Financial Statements, Captions [Line Items]
Current assets			996,431
Non-current assets	[3]		11,462,792
Non-guarantor intercompany assets			0
Current liabilities			295,365
Non-current liabilities			3,129,631
Non-guarantor intercompany liabilities			$ 0
New Gold Inc. | New Gold, Inc.
Condensed Financial Statements, Captions [Line Items]
Current assets		620,586
Non-current assets	[2]	9,681,447
Non-guarantor intercompany assets		0
Current liabilities		133,879
Non-current liabilities		2,903,988
Non-guarantor intercompany liabilities		$ 0

[1] Financial information excludes 1561611 B.C. Ltd., Coeur Silvertip Holdings Ltd., and New Gold Inc., which were added as subsidiary guarantors in the second quarter of 2026.

[2] Coeur Mining, Inc.’s non-current assets include its investment in Guarantor Subsidiaries.

[3] Coeur Mining, Inc.’s non-current assets include its investment in Guarantor Subsidiaries.