Revenue from Contracts with Customers (Tables)

12 Months Ended

Dec. 31, 2022

Revenue from Contracts with Customers [Abstract]

Disaggregation of Revenue

The following table disaggregates our revenue by major source (product line) for the years ended December 31, 2022, 2021 and 2020:

	Year Ended December 31,
(millions of dollars)	2022		2021		2020
Net Sales
Household, Personal Care & Specialty Products	$	560.9	$	460.5	$	380.2
Metalcasting		334.0		319.2		258.1
Environmental Products		174.1		136.3		131.6
Building Materials		58.7		60.0		55.9
Performance Materials		1,127.7		976.0		825.8
Paper PCC		381.7		349.7		308.4
Specialty PCC		100.4		77.1		69.3
Ground Calcium Carbonate		109.1		98.1		89.3
Talc		57.2		54.0		43.9
Specialty Minerals		648.4		578.9		510.9
Refractory Products		273.4		237.1		212.3
Metallurgical Products		76.0		66.3		45.8
Refractories		349.4		303.4		258.1
Total	$	2,125.5	$	1,858.3	$	1,594.8