Segment Information (Adjusted Depreciation and Amortization, and COVID-19 Related Costs) (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2021	Dec. 31, 2020
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Depreciation and amortization	$ 46.3	$ 45.8	$ 134.1	$ 142.9
Adjusted depreciation and amortization	11.7	10.8	32.7	32.9
COVID-19 related charges (benefit)	(2.8)	14.0	(2.0)	52.7
Corporate and reconciling items
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Adjusted depreciation and amortization	11.7	10.8	32.7	32.9
COVID-19 related charges (benefit)	(2.8)	14.0	(2.0)	52.7
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	$ (34.6)	$ (35.0)	$ (101.4)	$ (110.0)

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.

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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.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
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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.

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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
-Publisher FASB
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