Equity Investment

6 Months Ended

Jun. 30, 2018

Equity Method Investments And Joint Ventures [Abstract]

Equity Investment

NOTE 7. EQUITY INVESTMENT

Investment in joint venture reflects our 50% equity interest in WAVE.  The WAVE joint venture is reflected within the Mineral Fiber segment in our consolidated financial statements using the equity method of accounting. Condensed income statement data for WAVE is summarized below.   

	Three Months Ended				Six Months Ended
	June 30,				June 30,
	2018		2017		2018		2017
Net sales	$	106.7	$	92.5	$	194.4	$	177.8
Gross profit		61.6		51.9		109.4		100.0
Net earnings		49.2		41.4		84.8		79.2