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Segment Information (Narrative) (Details) $ in Millions	12 Months Ended
	Mar. 31, 2022 USD ($) customer	Mar. 31, 2021 USD ($) customer	Mar. 31, 2020 USD ($) customer
Concentration Risk [Line Items]
Revenues	$ 3,604.3	$ 3,271.5	$ 3,890.0
Customer Concentration Risk | Sales Revenue, Net
Concentration Risk [Line Items]
Number of customers over 10% threshold | customer	1	1	1
Revenues	$ 639.2	$ 638.8	$ 438.6

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