Revenue (Tables)

6 Months Ended

Jun. 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 six months ended June 30, 2020 and 2019:

	Three Months Ended				Six Months Ended
	June 30,				June 30,
Mineral Fiber	2020		2019		2020		2019
Distributors	$	114.6	$	161.4	$	256.5	$	306.0
Home centers		19.4		21.2		45.1		44.3
Direct customers		14.2		17.5		28.1		31.6
Retailers and other		9.7		14.0		25.9		28.9
Total	$	157.9	$	214.1	$	355.6	$	410.8

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	2020		2019		2020		2019
Distributors	$	32.0	$	37.3	$	67.9	$	68.8
Direct customers		12.4		19.0		26.8		32.1
Retailers and other		0.9		1.6		1.6		2.4
Total	$	45.3	$	57.9	$	96.3	$	103.3