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Debt and Financing Arrangements - Classification of the Company Lease Obligations (Detail) - USD ($) $ in Millions | Jun. 30, 2024 | Dec. 31, 2023 | Jun. 30, 2023
--- | --- | --- | ---
Operating Lease Obligations: |  |  |
Other Current Liabilities (current portion) | $ 1.7 | $ 1.9 | $ 1.7
Other Noncurrent Liabilities (long-term portion) | 3.4 | 3.7 | 3.5
Total Operating Lease Obligations | 5.1 | 5.6 | 5.2
Capital Lease Obligations: |  |  |
Other Current Liabilities (current portion) | 0.1 | 0.1 | 0.1
Other Noncurrent Liabilities (long-term portion) | 0.3 | 0.4 | 0.3
Total Capital Lease Obligations | 0.4 | 0.5 | 0.4
Total Lease Obligations | 5.5 | $ 6.1 | $ 5.6
Lease Obligations [Member] |  |  |
Operating Lease Obligations: |  |  |
Total Operating Lease Obligations | $ 5,076.0 |  |

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