Property, Plant and Equipment, Net (Schedule Of Property, Plant And Equipment, Net) (Details) (USD $) In Millions, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Property, Plant and Equipment, Net [Abstract]
Land	$ 207us-gaap_Land	$ 221us-gaap_Land
Building, machinery, equipment and other	3,237us-gaap_PropertyPlantAndEquipmentOther	3,155us-gaap_PropertyPlantAndEquipmentOther
Total property, plant and equipment	3,444us-gaap_PropertyPlantAndEquipmentGross	3,376us-gaap_PropertyPlantAndEquipmentGross
Accumulated depreciation	(1,399)	(1,180)
Property, plant and equipment, net	$ 2,045us-gaap_PropertyPlantAndEquipmentNet	$ 2,196us-gaap_PropertyPlantAndEquipmentNet

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

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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

+ References

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- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

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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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