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Debt and Financing Arrangements - Classification of the Company Lease Obligations (Detail) - USD ($)
$ in Millions
Mar. 31, 2023
Dec. 31, 2022
Mar. 31, 2022
Operating Lease Obligations:      
Other Current Liabilities (current portion) $ 1.8 $ 1.5 $ 1.6
Other Noncurrent Liabilities (long-term portion) 3.9 2.8 3.2
Total Operating Lease Obligations 5.7 4.3 4.8
Capital Lease Obligations:      
Other Current Liabilities (current portion) 0.1 0.1 0.1
Other Noncurrent Liabilities (long-term portion) 0.3 0.1 0.2
Total Capital Lease Obligations 0.4 0.2 0.3
Total Lease Obligations 6.1 $ 4.5 $ 5.1
Lease Obligations [Member]      
Operating Lease Obligations:      
Total Operating Lease Obligations $ 5,706.0