Other income (expense), net was $8.3 million in 2016, $46.7 million in 2015 and $10.9 million in 2014. In 2016, the expense was primarily related to $16.1 million of unrealized and realized losses on fuel swap derivative hedge contracts partially offset by $4.5 million of gains on foreign currency exchange and $3.9 million of gains on foreign currency exchange derivative hedge contracts. In 2015, the expense was primarily related to $30.7 million of losses from the dedesignation of certain fuel swap derivative hedge contracts and the ineffectiveness of settled fuel swaps in 2015. Also included in 2015 was an expense of $26.2 million related to the fair value adjustment of a foreign exchange collar which does not receive hedge accounting treatment partially offset by $11.0 million of foreign currency transaction gains. In 2014, the expense was primarily related to $7.2 million of losses on foreign currency exchange derivative hedge contracts and the fair value adjustment of a foreign exchange collar which does not receive hedge accounting treatment, $6.9 million of losses related to fuel swap derivative hedge contracts and $3.0 million of losses related to a deferred revenue adjustment partially offset by $6.0 million of gains on foreign currency exchange.