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Segment Information (Purchase Accounting and Related Adjustments) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2024	Dec. 31, 2023
Corporate and reconciling items
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Purchase accounting and related adjustments	$ 38.3	$ 39.2	$ 117.1	$ 120.5
General and administrative expense
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Purchase accounting and related adjustments	2.9	2.8	6.8	15.0
General and administrative expense | Corporate and reconciling items
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Purchase accounting and related adjustments	2.9	2.8	6.8	15.0
Amortization of purchase price				1.3
Depreciation and amortization expense | Corporate and reconciling items
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Purchase accounting and related adjustments	$ 35.4	$ 36.4	$ 110.3	$ 105.5

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- Definition

Purchase Accounting and Related Adjustments, Amortization of Purchase Price

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- Definition

The amortization of non-cash fair value adjustments to the assets and liabilities acquired in the acquisition of businesses.

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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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