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Supplemental Information | 12 Months Ended
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Dec. 31, 2016
Supplemental Information [Abstract] |
Supplemental Information | Supplemental Information: Below is information about expenses included in our Consolidated Statements of Operations (in millions):
| For the Years Ended December 31,
| 2016 |  | 2015 |  | 2014
Research and development | $ | 64.6 |  |  | $ | 62.3 |  |  | $ | 60.7 |
Advertising, promotions and marketing (1) | 41.0 |  |  | 42.5 |  |  | 41.9 |
Cooperative advertising expenditures (2) | 14.7 |  |  | 13.7 |  |  | 13.1 |
Rent expense | 57.9 |  |  | 53.5 |  |  | 50.5 |
(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,
| 2016 |  | 2015 |  | 2014
Interest expense, net of capitalized interest | $ | 28.1 |  |  | $ | 25.2 |  |  | $ | 18.9 |
Interest income | 1.1 |  |  | 1.6 |  |  | 1.7 |
Interest expense, net | $ | 27.0 |  |  | $ | 23.6 |  |  | $ | 17.2 |

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