Revenue from Contracts with Customers (Tables)

9 Months Ended

Oct. 03, 2021

Revenue from Contracts with Customers [Abstract]

Disaggregation of Revenue

The following table disaggregates our revenue by major source (product line) for the three and nine-month periods ended October 3, 2021 and September 27, 2020:

(millions of dollars)	Three Months Ended				Nine Months Ended
Net Sales	Oct. 3, 2021		Sep. 27, 2020		Oct. 3, 2021		Sep. 27, 2020
Household, Personal Care & Specialty Products	$	121.8	$	93.9	$	333.9	$	278.0
Metalcasting		72.9		66.3		235.0		180.8
Environmental Products		39.8		30.2		105.8		104.5
Building Materials		15.9		13.5		45.0		43.5
Performance Materials		250.4		203.9		719.7		606.8
Paper PCC		89.5		74.5		264.9		225.1
Specialty PCC		18.2		17.3		57.1		49.7
Ground Calcium Carbonate		25.0		23.2		74.5		66.4
Talc		14.2		10.1		40.9		30.8
Specialty Minerals		146.9		125.1		437.4		372.0
Refractory Products		58.3		48.8		175.1		151.7
Metallurgical Products		17.6		10.5		49.2		32.5
Refractories		75.9		59.3		224.3		184.2
Total	$	473.2	$	388.3	$	1,381.4	$	1,163.0