Revenue (Tables)

9 Months Ended

Sep. 30, 2021

Mineral Fiber [Member]

Disaggregation Of Revenue [Line Items]

Schedule of Net Sales by Major Customer Channel within Each Segment

The following tables provide net sales by major customer channel within our Mineral Fiber and Architectural Specialties segments for the three and nine months ended September 30, 2021 and 2020:

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
Mineral Fiber	2021		2020		2021		2020
Distributors	$	161.5	$	138.6	$	453.5	$	395.1
Home centers		20.2		22.5		68.4		67.6
Direct customers		16.3		13.8		44.3		41.9
Retailers and other		16.5		12.4		45.1		38.3
Total	$	214.5	$	187.3	$	611.3	$	542.9

Architectural Specialties [Member]

Disaggregation Of Revenue [Line Items]

Schedule of Net Sales by Major Customer Channel within Each Segment

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
Architectural Specialties	2021		2020		2021		2020
Distributors	$	41.4	$	36.0	$	116.0	$	103.9
Direct customers		35.7		23.0		94.6		49.8
Retailers and other		0.6		-		2.2		1.6
Total	$	77.7	$	59.0	$	212.8	$	155.3