XML 111 R66.htm IDEA: XBRL DOCUMENT v3.6.0.2
MERGER WITH PLUM CREEK Additional Information (Details) - Plum Creek
$ in Millions
12 Months Ended
Dec. 31, 2016
USD ($)
Dec. 31, 2015
USD ($)
Feb. 19, 2016
Business Acquisition [Line Items]      
Exchange ratio per the merger agreement     1.60
Total assets acquired $ 10,000    
Estimated consideration transferred 6,383    
Total liabilities assumed 3,600    
Merger-related costs 146 $ 14  
Non-recurring merger-related costs $ 155 $ 22