Digital Currencies (Narrative) (Details) $ in Millions	3 Months Ended	6 Months Ended
Sep. 30, 2024 USD ($)	Sep. 30, 2023 USD ($)	Sep. 30, 2024 USD ($)	Sep. 30, 2023 USD ($)
Disclosure of Digital Currencies [Abstract]
Number of Bitcoin mined	340	801	789	1,635
Proceeds from sale of digital currencies	$ 14.1	$ 28.2	$ 29.6	$ 61.7
Cost of digital currency sold	14.3	30.5	31.0	64.5
Loss on sale of digital currencies	0.2	2.3	1.4	2.8
Gain (loss) accumulated other comprehensive income	$ 4.8	$ 4.3	$ (15.9)	$ 0.1

The amount of individually immaterial components of other comprehensive income that will be reclassified to profit or loss, net of tax, that the entity does not separately disclose in the same statement or note. [Refer: Other comprehensive income]

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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