The components of Other income/(expense), net for the years ended December 31, 2017, 2016 and 2015 are as follows:



In millions	2017			2016			2015
Interest income	$	9.4		$	8.0		$	10.6
Exchange gain (loss)	(8.8		)	(2.0		)	(36.2		)
Other components of net periodic benefit cost	(31.0		)	(30.1		)	(33.7		)
Income (loss) from equity investment	—			(0.8		)	12.6
Gain on sale of Hussmann equity investment	—			397.8			—
Other activity, net	(1.2		)	(13.3		)	25.9
Other income/(expense), net	$	(31.6	)	$	359.6		$	(20.8	)

Other income /(expense), net includes the results from activities other than normal business operations such as interest income and foreign currency gains and losses on transactions that are denominated in a currency other than an entity’s functional currency. In addition, the Company includes the components of net periodic benefit cost for pension and post retirement obligations other than the service cost component as a result of the adoption of ASU 2017-07. Other activity, net include costs associated with Trane U.S. Inc. (Trane) for the settlement and defense of asbestos-related claims, insurance settlements on asbestos-related matters and the revaluation of its liability for potential future claims. Refer to Note 19, "Commitments and Contingencies," for more information regarding asbestos-related matters. In addition, other activity, net for the year ended December 31, 2016 includes $16.4 million for the settlement of a lawsuit originally filed by a customer in 2012. The lawsuit related to a commercial HVAC contract entered into in 2001, prior to our acquisition of Trane. The charge represents the settlement and related legal costs recognized during 2016.

During the year ended December 31, 2015, the Company recognized a loss on foreign currency exchange of $36.2 million. This loss is comprised of a $42.6 million pre-tax charge related to the remeasurement of net monetary assets denominated in Venezuelan bolivar. This loss was partially offset by $6.4 million of foreign currency transaction gains resulting from the remeasurement of non-functional balance sheet positions into their functional currency.

Sale of Hussmann Equity Investment

During 2011, the Company completed the sale of a controlling interest of its Hussmann refrigerated display case business (Hussmann) to a newly-formed affiliate of private equity firm Clayton Dubilier & Rice, LLC (CD&R). Per the terms of the agreement, CD&R’s ownership interest in Hussmann at the acquisition date was 60% with the remaining 40% being retained by the Company. As a result, the Company accounted for its interest in Hussmann using the equity method of accounting.

On December 21, 2015, the Company announced it would sell its remaining equity interest in Hussmann as part of a transaction in which Panasonic Corporation would acquire 100 percent of Hussmann's outstanding shares. The transaction was completed on April 1, 2016. The Company received net proceeds of $422.5 million, for its interest and recognized a gain of $397.8 million on the sale.