Property, Plant and Equipment, Net (Schedule Of Property, Plant And Equipment, Net) (Details) (USD $) In Millions, unless otherwise specified	Mar. 31, 2013	Mar. 31, 2012
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	$ 2,529	$ 2,175
Accumulated depreciation	(1,208)	(1,132)
Property, Plant and Equipment, Net	1,321	1,043
Land [Member]
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	129	68
Building Machinery Equipment And Other [Member]
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	$ 2,400	$ 2,107

The cumulative amount of depreciation, depletion and amortization (related to property, plant and equipment, but not including land) that has been recognized in the income statement.

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Gross amount of long-lived 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, furniture and fixtures, and computer equipment.

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- Definition

Amount, net of accumulated depreciation, depletion and amortization, of long-lived 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, furniture and fixtures, and computer equipment.

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