SEGMENT AND RELATED INFORMATION: - Receivables (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Financial information related to segments
Trade receivables	$ 1,189.6	$ 1,141.1
Related parties receivable current:	13.5	27.3
Operating segment
Financial information related to segments
Trade receivables	1,189.6	1,141.1
Related parties receivable current:	66.2	27.4
Corporate, other and eliminations | Intersegment sales
Financial information related to segments
Related parties receivable current:	(52.7)	(0.1)
Mexican Open-Pit | Operating segment
Financial information related to segments
Trade receivables	623.0	556.3
Related parties receivable current:	39.7	25.7
Mexican IMMSA Unit | Operating segment
Financial information related to segments
Trade receivables	59.7	49.1
Related parties receivable current:	25.1	0.9
Peruvian Operations | Operating segment
Financial information related to segments
Trade receivables	506.9	535.7
Related parties receivable current:	$ 1.3	$ 0.8