Goodwill Capitalized Software and Other Intangible Assets 2 (Details) (USD $) In Millions, unless otherwise specified	9 Months Ended
Dec. 31, 2011
Amortization expense over the next five fiscal years
2012	$ 283
2013	303
2014	274
2015	230
2016	184
Purchased software products [Member]
Amortization expense over the next five fiscal years
2012	103
2013	106
2014	98
2015	87
2016	86
Internally developed software products [Member]
Amortization expense over the next five fiscal years
2012	115
2013	143
2014	128
2015	103
2016	72
Other intangible assets subject to amortization [Member]
Amortization expense over the next five fiscal years
2012	65
2013	54
2014	48
2015	40
2016	$ 26

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The amount of amortization expense expected to be recognized during year five of the five succeeding fiscal years.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 142

-Paragraph 45

-Subparagraph a(3)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 2

-Subparagraph (a)(3)

-URI http://asc.fasb.org/extlink&oid=6905858&loc=d3e16323-109275

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The amount of amortization expense expected to be recognized during year four of the five succeeding fiscal years.

+ References

+ Details

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- Definition

The amount of amortization expense expected to be recognized during year one of the five succeeding fiscal years.

+ References

+ Details

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- Definition

The amount of amortization expense expected to be recognized during year three of the five succeeding fiscal years.

+ References

+ Details

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- Definition

The amount of amortization expense expected to be recognized during year two of the five succeeding fiscal years.

+ References

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