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Refers to minimum percentage of carrying value by unit considered for goodwill impairment analysis.

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Refers to number of reporting units within the segment.

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Refers to the percentage of estimated fair value of reporting unit.

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No definition available.

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Percentage of revenue recognized under the accounting rules for construction-type and production-type contracts.

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Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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No definition available.

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Amount before tax of foreign currency transaction realized gain (loss) recognized in the income statement.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 830

-SubTopic 20

-Section 45

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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

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Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

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No definition available.

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The percentage of LIFO (last in first out) inventory to total inventory as of the balance sheet date if other than 100 percent.

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No definition available.

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Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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No definition available.

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Summary of Major Accounting Policies (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended	12 Months Ended			9 Months Ended
	Dec. 31, 2014 Segment	Dec. 31, 2014 Segment	Dec. 31, 2013	Dec. 31, 2012	Sep. 30, 2014 Unit
Summary of Major Accounting Policies [Abstract]
Number of business segments	4us-gaap_NumberOfReportableSegments	4us-gaap_NumberOfReportableSegments
Revenue Recognition [Abstract]
Percentage of revenue recognized under the accounting rules for construction-type and production-type contracts (in hundredths)	31.00%	31.00%	31.00%	26.00%
Inventories [Abstract]
Percentage of inventories carried on the LIFO method (in hundredths)	54.00%us-gaap_PercentageOfLIFOInventory	54.00%us-gaap_PercentageOfLIFOInventory	49.00%us-gaap_PercentageOfLIFOInventory
Intangible Assets [Abstract]
Amount of goodwill included in reporting units	$ 2,461us-gaap_Goodwill	$ 2,461us-gaap_Goodwill	$ 2,925us-gaap_Goodwill
Minimum percentage of carrying value by unit (in hundredths)		75.00%
Foreign Currency Derivatives [Abstract]
Foreign currency transactions gain (loss)		22	1	12
Minimum [Member]
Intangible Assets [Abstract]
Finite-lived intangible assets, useful life		5 years
Maximum [Member]
Intangible Assets [Abstract]
Finite-lived intangible assets, useful life		28 years
Buildings and Leasehold Improvements [Member] \| Minimum [Member]
Property, Plant and Equipment [Line Items]
Estimated useful life		10 years
Buildings and Leasehold Improvements [Member] \| Maximum [Member]
Property, Plant and Equipment [Line Items]
Estimated useful life		40 years
Machinery, Equipment and Tooling [Member] \| Minimum [Member]
Property, Plant and Equipment [Line Items]
Estimated useful life		3 years
Machinery, Equipment and Tooling [Member] \| Maximum [Member]
Property, Plant and Equipment [Line Items]
Estimated useful life		18 years
Office Furniture, Software and Other [Member] \| Minimum [Member]
Property, Plant and Equipment [Line Items]
Estimated useful life		3 years
Office Furniture, Software and Other [Member] \| Maximum [Member]
Property, Plant and Equipment [Line Items]
Estimated useful life		10 years
V&M [Member]
Intangible Assets [Abstract]
Amount of goodwill included in reporting units	311	311	318		311
V&M [Member] \| Minimum [Member]
Intangible Assets [Abstract]
Number of reporting units within the segment	2
V&M [Member] \| Maximum [Member]
Intangible Assets [Abstract]
Number of reporting units within the segment					5
CPS [Member]
Intangible Assets [Abstract]
Amount of goodwill included in reporting units	$ 571	$ 571
CPS [Member] \| Minimum [Member]
Intangible Assets [Abstract]
Percentage of estimated fair value (in hundredths)		10.00%
CPS [Member] \| Maximum [Member]
Intangible Assets [Abstract]
Percentage of estimated fair value (in hundredths)		15.00%