4. Other Income, Net
Other income, net, for 2013 included net foreign currency transaction gains ($12 million), equity income from investments in ammonia plants in Trinidad ($11 million), interest income ($6 million) primarily related to sales and use tax refunds, and losses on sales and adjustments of warehouse stock ($23 million). Other income, net, for 2012 included equity income from investments in ammonia plants in Trinidad ($20 million), interest income ($9 million) primarily related to severance tax refunds, net foreign currency transaction gains ($7 million), losses on sales of warehouse stock ($10 million) and operating losses on EOG's investment in the proposed Pacific Trail Pipelines (PTP) in Canada ($9 million). Other income, net, for 2011 included equity income from investments in ammonia plants in Trinidad ($17 million), operating losses on EOG's investment in the PTP in Canada ($5 million) and losses on sales of warehouse stock ($5 million).
