Goodwill and Intangible Assets Other Intangible Assets (Details) - USD ($) $ in Millions	Mar. 31, 2026	Mar. 31, 2025
Summary of Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]
Intangible Asset, Finite-Lived, before Accumulated Amortization	$ 3,403.0	$ 3,362.4
Intangible Asset, Finite-Lived, Accumulated Amortization	1,783.0	1,508.0
Customer Relationships [Member]
Summary of Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]
Intangible Asset, Finite-Lived, before Accumulated Amortization	2,655.8	2,564.3
Intangible Asset, Finite-Lived, Accumulated Amortization	1,344.0	1,067.4
Noncompete Agreements [Member]
Summary of Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]
Intangible Asset, Finite-Lived, before Accumulated Amortization	0.0	15.1
Intangible Asset, Finite-Lived, Accumulated Amortization	0.0	15.0
Patented Technology [Member]
Summary of Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]
Intangible Asset, Finite-Lived, before Accumulated Amortization	456.6	480.3
Intangible Asset, Finite-Lived, Accumulated Amortization	303.0	294.1
Trademarks and Trade Names [Member]
Summary of Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]
Intangible Asset, Finite-Lived, before Accumulated Amortization	235.8	247.9
Intangible Asset, Finite-Lived, Accumulated Amortization	106.8	105.1
supplier relationships [Member]
Summary of Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]
Intangible Asset, Finite-Lived, before Accumulated Amortization	54.8	54.8
Intangible Asset, Finite-Lived, Accumulated Amortization	$ 29.2	$ 26.5