Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2025

Accounting Policies [Abstract]

Summary of Components of Inventories

The components of inventories were as follows (dollars in millions):

	December 31,
	2025		2024
Raw materials	$	416.6	$	356.6
Work in process		17.5		15.5
Finished goods		241.6		234.0
Supplies and materials		567.5		518.8
Inventories	$	1,243.2	$	1,124.9

Summary of Property, Plant and Equipment (at cost)

Property, plant, and equipment consisted of the following (dollars in millions):

	December 31,
	2025			2024
Land and land improvements	$	258.0		$	203.4
Buildings		1,343.8			1,140.0
Machinery and equipment		8,271.7			7,368.8
Construction in progress		552.8			397.2
Other		217.0			195.8
Property, plant and equipment, at cost		10,643.3			9,305.2
Less accumulated depreciation		(5,658.2	)		(5,266.2	)
Property, plant, and equipment, net	$	4,985.1		$	4,039.0

Summary of Property, Plant and Equipment Estimated Useful Lives

The following lives are used for the various categories of assets:

Buildings and land improvements	5 to 40 years
Machinery and equipment	3 to 25 years
Trucks and automobiles	3 to 20 years
Furniture and fixtures	3 to 25 years
Computers and hardware	3 to 10 years
Leasehold improvements	Period of the lease or useful life, if shorter