Revenue (Tables)

9 Months Ended

Sep. 30, 2020

Mineral Fiber [Member]

Disaggregation Of Revenue [Line Items]

Schedule of Net Sales by Major Customer Group within Each Segment

The following tables provide net sales by major customer group within our Mineral Fiber and Architectural Specialties segments for the three and nine months ended September 30, 2020 and 2019:

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
Mineral Fiber	2020		2019		2020		2019
Distributors	$	138.6	$	168.0	$	395.1	$	474.0
Home centers		22.5		20.0		67.6		64.3
Direct customers		13.8		15.8		41.9		47.4
Retailers and other		12.4		14.8		38.3		43.7
Total	$	187.3	$	218.6	$	542.9	$	629.4

Architectural Specialties [Member]

Disaggregation Of Revenue [Line Items]

Schedule of Net Sales by Major Customer Group within Each Segment

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
Architectural Specialties	2020		2019		2020		2019
Distributors	$	36.0	$	39.7	$	103.9	$	108.5
Direct customers		23.0		16.7		49.8		48.8
Retailers and other		-		2.1		1.6		4.5
Total	$	59.0	$	58.5	$	155.3	$	161.8