PROPERTY: (Tables)

12 Months Ended

Dec. 31, 2024

PROPERTY:

Schedule of major classes of property, plant and equipment

	At December 31,
(in millions)	2024		2023
Buildings and equipment	$	18,013.5	$	17,439.3
Construction in progress		1,579.1		1,664.8
Mine development		348.8		320.7
Mineral assets		83.2		83.2
Land, other than mineral		340.1		277.5
Total property		20,364.7		19,785.5
Accumulated depreciation, amortization and depletion		(10,481.4)		(10,002.6)
Total property and mine development, net	$	9,883.3	$	9,782.9