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LEGAL PROCEEDINGS, COMMITMENTS AND CONTINGENCIES (Tables)
 12 Months Ended
Dec. 31, 2016
Loss Contingencies [Line Items]  
Changes in the Reserve for Environmental Remediation
Changes in the Reserve for Environmental Remediation
DOLLAR AMOUNTS IN MILLIONS
Reserve balance as of December 31, 2015
$
37

Reserve charges and adjustments, net
7

Payments
(10
)
Reserve balance as of December 31, 2016
$
34

Total active sites as of December 31, 2016
35
Changes in the Reserve for Asset Retirement Obligations
Changes in the Reserve for Asset Retirement Obligations
DOLLAR AMOUNTS IN MILLIONS
Reserve balance as of December 31, 2015(1)
$
29

Reserve charges and adjustments, net
8

Payments
(10
)
Other adjustments(2)
2

Reserve balance as of December 31, 2016
$
29

(1) Reserve balance for continuing operations
(2) Primarily related to a foreign currency remeasurement gain for our Canadian reforestation obligation
Operating Leases
Our rent expense for continuing operations was:
DOLLAR AMOUNTS IN MILLIONS
  
2016

2015

2014

Rent expense
$
37

$
24

$
25
Future Commitments on Operating Leases
Our operating lease commitments as of December 31, 2016 were:
DOLLAR AMOUNTS IN MILLIONS
  
DECEMBER 31, 2016

2017
$
34

2018
$
32

2019
$
27

2020
$
24

2021
$
21

Thereafter
$
131