Divestitures 1 (Details) - Discontinued Operations - USD ($) $ in Millions	3 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Income from discontinued operations
Total revenue	$ 8	$ 31
Income from discontinued operations, net of tax expense of $2 million and $4 million, respectively	5	5
Tax expense on income from discontinued operations	2	4
Subscription and Maintenance
Income from discontinued operations
Total revenue	6	21
Software Fees and Other
Income from discontinued operations
Total revenue	$ 2	$ 10