Revenue (Tables)

6 Months Ended

Jun. 30, 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 and six months ended June 30, 2021 and 2020:

	Three Months Ended				Six Months Ended
	June 30,				June 30,
Mineral Fiber	2021		2020		2021		2020
Distributors	$	156.7	$	114.6	$	292.0	$	256.5
Home centers		21.4		19.4		48.2		45.1
Direct customers		15.2		14.2		28.0		28.1
Retailers and other		14.8		9.7		28.6		25.9
Total	$	208.1	$	157.9	$	396.8	$	355.6

Architectural Specialties [Member]

Disaggregation Of Revenue [Line Items]

Schedule of Net Sales by Major Customer Group within Each Segment

	Three Months Ended				Six Months Ended
	June 30,				June 30,
Architectural Specialties	2021		2020		2021		2020
Distributors	$	40.3	$	32.0	$	74.6	$	67.9
Direct customers		30.8		12.4		58.9		26.8
Retailers and other		0.8		0.9		1.6		1.6
Total	$	71.9	$	45.3	$	135.1	$	96.3