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Property and Equipment (Summary) (Details) - USD ($) $ in Millions	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022
Property, Plant and Equipment [Line Items]
Property and equipment, net	$ 88.5	$ 89.5
Depreciation expense	49.9	40.1	$ 43.0
Distribution Equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	19.3	19.1
Leasehold Improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross	66.1	58.7
Property and Equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	26.0	23.8
Computer Equipment and Software
Property, Plant and Equipment [Line Items]
Property and equipment, gross	236.1	241.6
Depreciable Assets
Property, Plant and Equipment [Line Items]
Property and equipment, gross	347.5	343.2
Less accumulated depreciation and amortization	(260.2)	(254.9)
Property and equipment, net	87.3	88.3
Land
Property, Plant and Equipment [Line Items]
Property and equipment, net	$ 1.2	$ 1.2

X

- Definition

The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation.

+ References

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Amount of accumulated depreciation and amortization from plant, property, and equipment and right-of-use asset from finance lease.

+ References

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Amount, after accumulated depreciation and amortization, of property, plant, and equipment and finance lease right-of-use asset.

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