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Segment Information (Gain on Sale of Pantaya, Adjusted Depreciation and Amortization, COVID-19 Charges) (Details) - USD ($) $ in Millions	12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Goodwill allocated related to sale of Pantaya		$ 69.0
Depreciation and amortization	$ 177.9	188.5	$ 197.7
Adjusted depreciation and amortization	43.0	44.3	41.8
COVID-19 related charges (benefit)	(3.4)	67.5	50.2
Corporate and reconciling items
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Adjusted depreciation and amortization	43.0	44.3	41.8
COVID-19 related charges (benefit)	(3.4)	67.5	50.2
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	$ (134.9)	$ (144.2)	$ (155.9)

X

- Definition

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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