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Restructuring Textual Abstract.

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Work force reduction as a result of restructuring activities.

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Amount of costs incurred to date for the specified type of restructuring cost.

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Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan.

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Amount of any reversal and other adjustment made during the period to the amount of a previously accrued liability for a specified type of restructuring cost, excluding adjustments for costs incurred during the period, costs settled during the period, and foreign currency translation adjustments.

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Amount of cash paid in the period to fully or partially settle a specified, previously accrued type of restructuring cost.

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Severance and Exit Costs (Details) (USD $) In Millions, unless otherwise specified	1 Months Ended	3 Months Ended	6 Months Ended						1 Months Ended	6 Months Ended		19 Months Ended	6 Months Ended		19 Months Ended	1 Months Ended	6 Months Ended		62 Months Ended	6 Months Ended		62 Months Ended
	Jul. 31, 2011 Restructuring Activity Fiscal Plan 2012 [Member] Employee	Sep. 30, 2011 Restructuring Activity Fiscal Plan 2012 [Member] Severance [Member]	Sep. 30, 2011 Restructuring Activity Fiscal Plan 2012 [Member] Severance [Member]	Sep. 30, 2011 Restructuring Activity Fiscal Plan 2012 [Member] Severance [Member] Selling and marketing [Member]	Sep. 30, 2011 Restructuring Activity Fiscal Plan 2012 [Member] Severance [Member] Product development and enhancements [Member]	Sep. 30, 2011 Restructuring Activity Fiscal Plan 2012 [Member] Severance [Member] General and administrative [Member]	Sep. 30, 2011 Restructuring Activity Fiscal Plan 2012 [Member] Severance [Member] Costs of licensing and maintenance [Member]	Sep. 30, 2011 Restructuring Activity Fiscal Plan 2012 [Member] Severance [Member] Costs of professional services [Member]	Mar. 31, 2010 Restructuring Activity Fiscal Plan 2010 [Member] Employee	Sep. 30, 2011 Restructuring Activity Fiscal Plan 2010 [Member] Severance [Member]	Sep. 30, 2010 Restructuring Activity Fiscal Plan 2010 [Member] Severance [Member]	Sep. 30, 2011 Restructuring Activity Fiscal Plan 2010 [Member] Severance [Member]	Sep. 30, 2011 Restructuring Activity Fiscal Plan 2010 [Member] Facility Abandonment [Member]	Sep. 30, 2010 Restructuring Activity Fiscal Plan 2010 [Member] Facility Abandonment [Member]	Sep. 30, 2011 Restructuring Activity Fiscal Plan 2010 [Member] Facility Abandonment [Member]	Aug. 31, 2006 Restructuring Activity Fiscal Plan 2007 [Member] Employee	Sep. 30, 2011 Restructuring Activity Fiscal Plan 2007 [Member] Severance [Member]	Sep. 30, 2010 Restructuring Activity Fiscal Plan 2007 [Member] Severance [Member]	Sep. 30, 2011 Restructuring Activity Fiscal Plan 2007 [Member] Severance [Member]	Sep. 30, 2011 Restructuring Activity Fiscal Plan 2007 [Member] Facility Abandonment [Member]	Sep. 30, 2010 Restructuring Activity Fiscal Plan 2007 [Member] Facility Abandonment [Member]	Sep. 30, 2011 Restructuring Activity Fiscal Plan 2007 [Member] Facility Abandonment [Member]
Severance and Exit Costs Activity
Accrued beginning balance			$ 0							$ 4	$ 46		$ 1	$ 2			$ 4	$ 8		$ 46	$ 60
Expense			44	27	9	5	2	1
Change in estimate										0	(3)		0	0			0	1		0	0
Payments			(12)							(2)	(30)		0	0			(1)	(3)		(6)	(9)
Accretion and other			0								(1)			0			0			1
Accrued ending balance		32	32							2	12	2	1	2	1		3	6	3	41	51	41
Severance and Exit Costs (Textual) [Abstract]
Workforce reduction	400								1,000							3,100
Cumulative amount recognized		$ 44										$ 44			$ 2				$ 220			$ 119