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OTHER OPERATING COSTS (INCOME), NET
 12 Months Ended
Dec. 31, 2016
OTHER OPERATING INCOME, NET
Other operating costs (income), net:
•
includes both recurring and occasional income and expense items and
•
can fluctuate from year to year.
Various Income and Expense Items Included in Other Operating Costs (Income), Net
DOLLAR AMOUNTS IN MILLIONS
  
2016

2015

2014

Gain on disposition of nonstrategic assets
$
(60
)
$
(12
)
$
(27
)
Foreign exchange losses (gains), net
(6
)
47

28

Litigation expense, net
24

23

9

Gain on postretirement plan amendment (Note 9)
—

—

(151
)
Other, net
1

(6
)
(7
)
Total other operating costs (income), net
$
(41
)
$
52

$
(148
)

Gain on disposition of nonstrategic assets in 2016 included a $36 million pretax gain recognized in first quarter 2016 on the sale of our Federal Way, Washington headquarters campus.
Gain on disposition of nonstrategic assets in 2014 included a $22 million pretax gain on the sale of a landfill in Washington State.
Foreign exchange gains and losses result from changes in exchange rates primarily related to our U.S. dollar denominated debt that is held by our Canadian subsidiary.