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Other Income (Expense), Net	12 Months Ended
Other Income (Expense), Net	Dec. 31, 2015
Other Income and Expenses [Abstract]
Other Income (Expense), Net	Other Income (Expense), Net Other income, net, for 2015 included equity income from investments in ammonia plants in Trinidad ($9 million), a downward adjustment to deferred compensation expense ($6 million), interest income ($3 million) and net foreign currency transaction losses ($(17) million). Other expense, net, for 2014 included net foreign currency transaction losses ($(34) million), losses on dispositions of warehouse stock ($15 million) and equity income from investments in ammonia plants in Trinidad ($8 million). Other expense, net, for 2013 included losses on dispositions of warehouse stock ($23 million), net foreign currency transaction gains ($12 million), equity income from investments in ammonia plants in Trinidad ($11 million) and interest income ($6 million) primarily related to sales and use tax refunds.