MERGER WITH PLUM CREEK (Tables)

12 Months Ended

Dec. 31, 2018

Business Combinations [Abstract]

Summarized Unaudited Pro Forma Information that Presents Combined Amounts as if this Merger Occurred at the Beginning of 2015 [Table Text Block]

Summarized Unaudited Pro Forma Information that Presents Combined Amounts as if this Merger Occurred at the Beginning of 2015

DOLLAR AMOUNTS IN MILLIONS, EXCEPT PER-SHARE FIGURES
	2016
Net sales	$	6,525
Net earnings from continuing operations attributable to Weyerhaeuser common shareholders	$	519
Net earnings from continuing operations per share attributable to Weyerhaeuser common shareholders, basic	$	0.69
Net earnings from continuing operations per share attributable to Weyerhaeuser common shareholders, diluted	$	0.68