Long-Lived Asset Impairment Charges (Tables)

12 Months Ended

Dec. 31, 2014

Restructuring and Related Activities [Abstract]

Schedule of impairment charges

As a result, we have recorded the following impairment charges.

(millions)	2014		2013		2012
Ocean vessels	$	60	$	—	$	—
Wallboard lines or facilities	16		—		—
Previously incurred costs related to construction of future facilities	12		—		—
Permanently closed gypsum quarry and ship loading facility	—		—		7
Other	2		—		1
Total long-lived asset impairment charges	$	90	$	—	$	8

As part of our continuing efforts to adapt our operations to market conditions, we implemented restructuring activities in 2013 and 2012 that resulted in the following restructuring charges:

(millions)	2014		2013			2012
Severance	—		2			6
Lease obligations	—		(1		)	—
Other exit costs	—		2			4
Total	$	—	$	3		$	10