Assets Held for Sale	12 Months Ended
Assets Held for Sale	Mar. 31, 2023
Assets Held for Sale [Abstract]
Assets Held for Sale	Note 2: Assets Held for Sale On November 2, 2020, the Company signed a definitive agreement to sell its liquid-cooled automotive business to Dana Incorporated (“Dana”). Beginning at that time, the Company classified this business as held for sale and ceased recording depreciation expense for its long-lived assets. On October 25, 2021, the Company announced that it agreed with Dana to terminate the sale agreement. Both companies had been actively engaged in the regulatory review process in Germany for many months and agreed that it was no longer in the best interest of either party to pursue the sale transaction further. In connection with the termination of the sale agreement, the Company determined that the liquid-cooled automotive business no longer met the requirements to be classified as held for sale. As a result, the Company remeasured the long-lived assets reverting back to held and used classification at the lower of their (i) carrying value, as if held for sale classification had not been met; or (ii) fair value at the date of the decision not to sell and reversed $57.2 million of held for sale impairment charges during the third quarter of fiscal 2022. The long-lived assets primarily consisted of property, plant and equipment assets and were fully impaired while classified as held for sale. For purposes of the remeasurement, the Company engaged third-party valuation specialists to assist in estimating the fair values of the assets. The Company primarily used the market and cost valuation approaches and utilized third-party information from various industry-accepted sources, including applicable government-published statistics and data from appraisal and resale service providers. The market approach focused on prices for comparable assets in arm’s length transactions. For land and building assets, for example, sales of similar properties near the Company’s facilities were analyzed. For machinery and equipment assets, the Company referenced available third-party information regarding the selling prices of similar equipment. The cost approach focused on the amount for which an asset could be replaced or reproduced. The cost of an asset was then adjusted downward based on various factors including, but not limited to, age, location, and physical condition. After estimating the fair values of the assets reverting back to held and used classification, the Company compared the fair value for each asset to its carrying value. Carrying value represented each asset’s carrying value before the initial impairment charge, reduced for depreciation that would have been recorded if the asset had not been classified as held for sale. The Company then adjusted each asset to the lower of fair value or carrying value, resulting in the reversal of $57.2 million of previous impairment charges. In addition, the Company resumed depreciating the property, plant and equipment assets of the liquid-cooled automotive business based on the remeasured asset values during the third quarter of fiscal 2022. The $57.2 million held for sale impairment reversal during the third quarter of fiscal 2022 was partially offset by $1.2 million of net held for sale impairment charges recorded earlier in fiscal 2022. At both June 30, 2021 and September 30, 2021, while the liquid-cooled automotive business was held for sale, the Company reassessed its fair value less costs to sell. As a result of these evaluations, the Company recorded a total of $8.6 million of impairment charges during the first and second quarters of fiscal 2022. These impairment charges reduced the net carrying value of property, plant and equipment additions during each quarter to zero. In addition, in connection with a modification of the sale perimeter in the first quarter of fiscal 2022, the Company determined that certain manufacturing operations no longer met the requirements to be classified as held for sale. As a result, the Company reversed $7.4 million of previous impairment charges to adjust the long-lived assets within the asset groups impacted by the sale perimeter change to their estimated fair value. The Company’s determination of fair value for the long-lived assets within the businesses impacted by the sale perimeter change in the first quarter involved judgement and the use of significant estimates and assumptions, including assumptions regarding future revenue projections and operating profit margins and risk-adjusted discount rates. When the liquid-cooled automotive business was initially classified as held for sale during the third quarter of fiscal 2021, the Company assessed the disposal group’s fair value less costs to sell and reduced the net carrying value of the disposal group’s long-lived assets to zero. During fiscal 2021, the Company recorded impairment charges totaling $138.3 million related to the long-lived assets within the liquid-cooled automotive business. Also during fiscal 2021, the Company signed a definitive agreement to sell its Austrian air-cooled automotive business to Schmid Metall GmbH. Upon classification as held for sale, the Company estimated an implied loss in excess of the carrying value of the disposal group’s long-lived assets, which primarily consisted of property, plant and equipment assets. As a result, the Company recorded a $26.8 million impairment charge related to this business, reducing the carrying value of the disposal group’s long-lived assets to zero. In addition, the Company recorded an impairment charge of $1.7 million related to other equipment within the Performance Technologies segment. See Note 1 for additional information regarding the accounting for the sale of the Austrian air-cooled automotive business, which was completed in fiscal 2022. The Company reported the impairment charges and reversals during fiscal 2022 and 2021 within the impairment charges (reversals) line on the consolidated statements of operations.