Goodwill, Capitalized Software and Other Intangible Assets 1 (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2014	Mar. 31, 2014
Capitalized software and other intangible assets
Gross amortizable assets	$ 8,042	$ 8,113
Less: Fully amortized assets	6,191	6,095
Remaining amortizable assets	1,851	2,018
Accumulated amortization on remaining amortizable assets	1,036	955
Net assets	815us-gaap_FiniteLivedIntangibleAssetsNet	1,063us-gaap_FiniteLivedIntangibleAssetsNet
Purchased Software Products [Member]
Capitalized software and other intangible assets
Gross amortizable assets	5,719	5,706
Less: Fully amortized assets	4,857	4,849
Remaining amortizable assets	862	857
Accumulated amortization on remaining amortizable assets	379	309
Net assets	483	548
Internally Developed Software Products [Member]
Capitalized software and other intangible assets
Gross amortizable assets	1,486	1,561
Less: Fully amortized assets	814	757
Remaining amortizable assets	672	804
Accumulated amortization on remaining amortizable assets	403	397
Net assets	269	407
Other Intangible Assets [Member]
Capitalized software and other intangible assets
Gross amortizable assets	837	846
Less: Fully amortized assets	520	489
Remaining amortizable assets	317	357
Accumulated amortization on remaining amortizable assets	254	249
Net assets	$ 63	$ 108

Finite-lived intangible assets, accumulated amortization on remaining amortizable assets.

No definition available.

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- Definition

Finite-lived intangible assets, remaining amortizable assets.

+ References

No definition available.

+ Details

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- Definition

Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 2

-Subparagraph (a)(1)

-URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275

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- Definition

Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

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- Definition

Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

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