Segment Information (Adjusted Depreciation and Amortization, COVID-19 Charges) (Details) - USD ($) $ in Millions	12 Months Ended
Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Depreciation and amortization	$ 192.2	$ 180.3	$ 177.9
Adjusted depreciation and amortization	50.1	40.2	43.0
Corporate and reconciling items
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Adjusted depreciation and amortization	50.1	40.2	43.0
COVID-19 related charges (benefit)	(1.0)	(11.6)	(3.4)
Purchase accounting and related adjustments \| Corporate and reconciling items
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Depreciation and amortization	$ (142.1)	$ (140.1)	$ (134.9)

The amount of depreciation and amortization as presented on the statement of operations, less the depreciation and amortization related to the non-cash fair value adjustments to property and equipment and intangible assets acquired in the acquisition of businesses, which are included in purchase accounting and related adjustments.

No definition available.

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The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

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Amount, after deduction of insurance proceeds, of loss recognized in the income statement for an event or transaction that is unusual in nature or infrequent in occurrence, or both.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 930
-SubTopic 715
-Name Accounting Standards Codification
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-Publisher FASB
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