Significant Accounting Policies - Property, Plant and Equipment, Net (Details) - USD ($) $ in Millions	Mar. 31, 2021	Mar. 31, 2020
Property, Plant and Equipment, Net [Abstract]
Land	$ 156	$ 151
Building and improvements	1,745	1,604
Machinery, equipment, and other	2,512	2,308
Construction in progress	382	131
Total property, plant, and equipment	4,795	4,194
Accumulated depreciation and amortization	(2,214)	(1,829)
Property, plant, and equipment, net	$ 2,581	$ 2,365

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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Amount before accumulated depreciation of building structures held for productive use including addition, improvement, or renovation to the structure, including, but not limited to, interior masonry, interior flooring, electrical, and plumbing.

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Amount of structure or a modification to a structure under construction. Includes recently completed structures or modifications to structures that have not been placed into service.

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Amount before accumulated depletion of real estate held for productive use, excluding land held for sale.

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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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Amount before accumulated depreciation, depletion and amortization of other physical assets used in the normal conduct of business to produce goods and services and not intended for resale.

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