Segments (Tables)

3 Months Ended

Mar. 31, 2016

Segment Reporting [Abstract]

Net sales and operating profit (loss) by segment

Segment results for our Gypsum, Ceilings and Distribution segments were as follows:

	Three months ended March 31,
(millions)	2016			2015
Net Sales:
Gypsum	$	635		$	577
Ceilings	125			123
Distribution	357			334
Eliminations	(147		)	(125		)
Total	$	970		$	909
Operating Profit (Loss):
Gypsum	$	111		$	68
Ceilings	29			21
Distribution	11			4
Corporate	(21		)	(23		)
Eliminations	(3		)	6
Total	$	127		$	76