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Intangible Assets and Goodwill - Intangible Assets, by Major Class (Details) - USD ($) $ in Millions	Jun. 30, 2023	Mar. 31, 2023
Finite-Lived Intangible Assets [Line Items]
Accumulated Amortization	$ (4,477.8)	$ (4,344.7)
Gross Amount	7,730.6	7,713.7
Net Amount	3,252.8	3,369.0
Amortization Expense
2024	517.0
2025	555.6
2026	485.0
2027	383.0
2028	$ 297.1
Minimum
Amortization Expense
Useful life	1 year
Maximum
Amortization Expense
Useful life	15 years
In-process research and development
Indefinite-lived Intangible Assets [Line Items]
In-process research and development		5.7
Core and developed technology
Finite-Lived Intangible Assets [Line Items]
Gross Amount	$ 7,310.0	7,296.2
Accumulated Amortization	(4,253.4)	(4,103.4)
Net Amount	3,056.6	3,192.8
Customer-related
Finite-Lived Intangible Assets [Line Items]
Gross Amount	199.8	199.8
Accumulated Amortization	(131.9)	(128.0)
Net Amount	67.9	71.8
Software licenses
Finite-Lived Intangible Assets [Line Items]
Gross Amount	220.8	211.7
Accumulated Amortization	(92.5)	(113.0)
Net Amount	$ 128.3	98.7
Distribution rights and other
Finite-Lived Intangible Assets [Line Items]
Gross Amount		0.3
Accumulated Amortization		(0.3)
Net Amount		$ 0.0

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