Revenue (Tables)

3 Months Ended

Mar. 31, 2021

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 months ended March 31, 2021 and 2020:

	Three Months Ended
	March 31,
Mineral Fiber	2021		2020
Distributors	$	135.3	$	141.9
Home centers		26.8		25.7
Direct customers		12.8		13.9
Retailers and other		13.8		16.2
Total	$	188.7	$	197.7

Architectural Specialties [Member]

Disaggregation Of Revenue [Line Items]

Schedule of Net Sales by Major Customer Group within Each Segment

	Three Months Ended
	March 31,
Architectural Specialties	2021		2020
Distributors	$	34.3	$	35.9
Direct customers		28.1		14.4
Retailers and other		0.8		0.7
Total	$	63.2	$	51.0