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Supplemental Disclosures | 12 Months Ended
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Dec. 31, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract] |
Supplemental Disclosures | Supplemental Disclosures Analysis of Allowances for Doubtful Accounts: ($ in millions)
| For the Years Ended December 31, |  |  |
| 2021 |  | 2020 |  | 2019 |  |  |
Allowance for Doubtful Accounts |  |  |  |  |  |  |  |
Beginning balance | $ | 1.1 |  |  | $ | 1.5 |  |  | $ | 1.7 |  |  |  |
Bad debt expense | 0.3 |  |  | 1.0 |  |  | 0.4 |  |  |  |
Recoveries | (0.1) |  |  | — |  |  | (0.3) |  |  |  |
Write-offs and discounts | 0.1 |  |  | (1.4) |  |  | (0.3) |  |  |  |
Ending balance | $ | 1.4 |  |  | $ | 1.1 |  |  | $ | 1.5 |  |  |  |
Supplemental Cash Flow Information ($ in millions)
| For the Years Ended December 31,
| 2021 |  | 2020 |  | 2019
Interest paid | $ | 47.4 |  |  | $ | 31.4 |  |  | $ | 29.1 |
Income taxes paid | 22.4 |  |  | 14.8 |  |  | 20.8 |
Capital spending in accounts payable and accrued liabilities | 6.3 |  |  | 5.2 |  |  | 5.9 |

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