Supplemental Information:

Below is information about expenses included in our Consolidated Statements of Operations (in millions):



	For the Years Ended December 31,
	2015		2014		2013
Research and development	$	62.3	$	60.7	$	53.7
Advertising, promotions and marketing ⁽¹⁾	42.5		41.9		45.2
Cooperative advertising expenditures ⁽²⁾	13.7		13.1		10.9
Rent expense ⁽³⁾	53.5		50.5		53.5

⁽¹⁾ Includes advertising, promotions and marketing costs related to discontinued operations of $4.1 million for the year ended December 31, 2013. No advertising costs related to discontinued operations were recorded for the years ended December 31, 2015 and 2014. Cooperative advertising expenditures were not included in these amounts.

⁽²⁾ Cooperative advertising expenditures were included in Selling, general and administrative expenses in the Consolidated Statements of Operations.

⁽³⁾ Includes rent expense related to discontinued operations of $4.5 million for the year ended December 31, 2013. No rent costs related to discontinued operations were recorded for the year ended December 31, 2015 and 2014.

Interest Expense, net

The components of Interest expense, net in our Consolidated Statements of Operations were as follows (in millions):



	For the Years Ended December 31,
	2015		2014		2013
Interest expense, net of capitalized interest	$	25.2	$	18.9	$	16.5
Interest income	1.6		1.7		2.0
Interest expense, net	$	23.6	$	17.2	$	14.5