v3.22.4
Leases (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2022
Dec. 31, 2021
Mar. 31, 2022
Lease Assets and Liabilities [Abstract]          
Operating lease ROU assets $ 49.2   $ 49.2   $ 52.1
Operating lease ROU assets, Statement of Financial Position [Extensible List] Other noncurrent assets   Other noncurrent assets   Other noncurrent assets
Finance lease ROU assets [1] $ 7.2   $ 7.2   $ 7.7
Finance lease ROU assets, Statement of Financial Position [Extensible List] Property, plant and equipment - net   Property, plant and equipment - net   Property, plant and equipment - net
Operating lease liabilities, current $ 10.2   $ 10.2   $ 12.7
Operating lease liabilities, current, Statement of Financial Position [Extensible List] Other current liabilities   Other current liabilities   Other current liabilities
Operating lease liabilities, noncurrent $ 40.4   $ 40.4   $ 41.2
Operating lease liabilities, noncurrent, Statement of Financial Position [Extensible List] Other noncurrent liabilities   Other noncurrent liabilities   Other noncurrent liabilities
Finance lease liabilities, current $ 0.4   $ 0.4   $ 0.4
Finance lease liabilities, current, Statement of Financial Position [Extensible List] Long-term debt - current portion   Long-term debt - current portion   Long-term debt - current portion
Finance lease liabilities, noncurrent $ 2.4   $ 2.4   $ 2.8
Finance lease liabilities, noncurrent, Statement of Financial Position [Extensible List] Long-term debt   Long-term debt   Long-term debt
Accumulated amortization $ 3.0   $ 3.0   $ 2.8
Components of Lease Expense [Abstract]          
Operating lease expense [2] 5.2 $ 5.2 16.0 $ 14.6  
Finance lease expense [Abstract]          
Depreciation of ROU assets 0.1 0.1 0.4 0.4  
Interest on lease liabilities 0.0 0.0 0.1 0.1  
Total lease expense 5.3 5.3 16.5 15.1  
Short-term lease expense $ 1.4 $ 1.0 $ 4.2 $ 2.8  
[1] Finance lease right-of-use (“ROU”) assets were recorded net of accumulated amortization of $3.0 million and $2.8 million as of December 31, 2022 and March 31, 2022, respectively.
[2] For the three and nine months ended December 31, 2022, operating lease expense included short-term lease expense of $1.4 million and $4.2 million, respectively.  For the three and nine months ended December 31, 2021, operating lease expense included short-term lease expense of $1.0 million and $2.8 million, respectively.  Variable lease expense was not significant.