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STOCKHOLDERS' EQUITY: - Dividends paid in common stock (Details) $ / shares in Units, $ in Millions			6 Months Ended
	May 19, 2025 USD ($) shares	Feb. 27, 2025 USD ($) shares	Jun. 30, 2025 $ / shares shares	Jun. 30, 2024 $ / shares	Dec. 31, 2024 shares
Stock dividend activity
Dividends paid as cash dividend (in dollars per share) | $ / shares			$ 1.4	$ 0.8
Parent Company (Grupo Mexico) common shares
Stock dividend activity
Dividends paid in share (in shares per share)	0.0099	0.0073
Reduction of shares in treasury stock	7,881,820	5,769,600
Treasury stock retired amount | $	$ 195.6	$ 143.2
Treasury stock balance at the end of the period (in shares)			80,528,161		94,185,981

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