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Revenue (Tables) | 12 Months Ended
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Dec. 31, 2020
Revenue From Contract With Customer [Abstract] |
Summary of Revenues Disaggregated by Product Line | The following table presents our revenues disaggregated by product line (dollars in millions):
|  | Year Ended December 31, |
|  | 2020 |  |  | 2019 |  |  | 2018 |
Packaging |  | $ | 5,919.5 |  |  | $ | 5,932.2 |  |  | $ | 5,938.5 |
Paper |  |  | 674.8 |  |  |  | 964.3 |  |  |  | 1,002.0 |
Corporate and Other |  |  | 63.9 |  |  |  | 67.8 |  |  |  | 74.1 |
Total revenue |  | $ | 6,658.2 |  |  | $ | 6,964.3 |  |  | $ | 7,014.6 |

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