Supplemental Information

12 Months Ended

Dec. 31, 2018

Supplemental Information:

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



	For the Years Ended December 31,
	2018		2017		2016
Research and development	$	72.2	$	73.6	$	64.6
Advertising, promotions and marketing ⁽¹⁾	42.5		45.0		41.0
Cooperative advertising expenditures ⁽²⁾	16.8		18.6		14.7
Rent expense	58.5		57.7		57.9

⁽¹⁾ 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.

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,
	2018		2017		2016
Interest expense, net of capitalized interest	$	39.1	$	32.1	$	28.1
Interest income	0.8		1.5		1.1
Interest expense, net	$	38.3	$	30.6	$	27.0