Stock Benefit Plans and Stock-Based Compensation (Details) (USD $)	3 Months Ended		6 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percent company match for employee 401(k) contributions (in hundredths)			33.00%
Limit on percent company match for employee 401(k) contributions (in hundredths)			2.00%
Maximum vesting percentage 401(k) (in hundredths)			100.00%
Years of service to be fully vested in 401(k) matching contributions			3 years
Aggregate Intrinsic Value [Abstract]
Total stock-based compensation expense before income taxes	$ 6,477,000	$ 14,875,000	$ 15,277,000	$ 25,312,000
Unrecognized compensation cost, net of estimated forfeitures	33,600,000		33,600,000
Unrecognized compensation cost, weighted-average period of recognition			2 years 1 month 20 days
Cost of maintenance fees [Member]
Aggregate Intrinsic Value [Abstract]
Total stock-based compensation expense before income taxes	78,000	169,000	171,000	348,000
Cost of subscription fees [Member]
Aggregate Intrinsic Value [Abstract]
Total stock-based compensation expense before income taxes	4,000	1,000	32,000	30,000
Cost of services [Member]
Aggregate Intrinsic Value [Abstract]
Total stock-based compensation expense before income taxes	22,000	21,000	31,000	41,000
Cost of application services [Member]
Aggregate Intrinsic Value [Abstract]
Total stock-based compensation expense before income taxes	1,255,000	10,020,000	3,874,000	10,506,000
Technology development and support [Member]
Aggregate Intrinsic Value [Abstract]
Total stock-based compensation expense before income taxes	256,000	528,000	523,000	1,100,000
Sales and marketing [Member]
Aggregate Intrinsic Value [Abstract]
Total stock-based compensation expense before income taxes	1,888,000	803,000	3,782,000	3,573,000
Administrative and general [Member]
Aggregate Intrinsic Value [Abstract]
Total stock-based compensation expense before income taxes	2,974,000	3,253,000	6,864,000	7,771,000
Restructuring costs [Member]
Aggregate Intrinsic Value [Abstract]
Total stock-based compensation expense before income taxes	0	0	0	1,791,000
Discontinued Operation [Member]
Aggregate Intrinsic Value [Abstract]
Total stock-based compensation expense before income taxes	0	80,000	0	152,000
Stock Options [Member]
Stock options, weighted average fair value assumptions [Abstract]
Expected volatility (in hundredths)			34.09%	39.52%
Risk-free interest rate (in hundredths)			1.88%	1.59%
Expected lives at date of grant (in years)			5 years 8 months 12 days	6 years 3 months 18 days
Weighted-average fair value of the options granted (in dollars per share)			$ 1.96	$ 2.69
Dividend yield assumption (in hundredths)			4.99%	4.42%
Fair value of stock options vested (in dollars per share)			$ 3.50	$ 3.98
Stock Options - Service-Based Vesting [Member]
Stock option activity [Roll Forward]
Options outstanding, beginning of period (in shares)			14,236,000
Granted (in shares)			2,631,000
Exercised (in shares)			(918,000)
Forfeited (in shares)			(92,000)
Cancelled/expired (in shares)			(85,000)
Options outstanding, end of period (in shares)	15,772,000		15,772,000
Options vested and expected to vest, net of estimated forfeitures, as of end of period (in shares)	15,167,000		15,167,000
Options exercisable as of end of period (in shares)	10,860,000		10,860,000
Weighted average exercise price [Abstract]
Options outstanding as of beginning of period (in dollars per share)			$ 8.80
Granted (in dollars per share)			$ 9.87
Exercised (in dollars per share)			$ 7.69
Forfeited/cancelled (in dollars per share)			$ 9.99
Cancelled/expired (in dollars per share)			$ 9.65
Options outstanding as of end of period (in dollars per share)	$ 9.03		$ 9.03
Options vested and expected to vest, net of estimated forfeitures, as of end of period (in dollars per share)	$ 8.99		$ 8.99
Options exercisable as of end of period (in dollars per share)	$ 8.59		$ 8.59
Weighted average remaining contractual term [Abstract]
Options outstanding as of end of period			6 years 8 months 1 day
Options vested and expected to vest, net of estimated forfeitures, as of end of period			6 years 6 months 29 days
Options exercisable as of end of period			5 years 8 months 12 days
Aggregate intrinsic value [Abstract]
Exercised			2,428,000
Options outstanding as of end of period	26,278,000		26,278,000
Options vested and expected to vest, net of estimated forfeitures, as of end of period	25,907,000		25,907,000
Options exercisable as of end of period	22,848,000		22,848,000
Stock Options - Performance and Service-Based Vesting [Member]
Stock option activity [Roll Forward]
Options outstanding, beginning of period (in shares)			2,150,000
Granted (in shares)			1,116,000
Forfeitures/cancelled (in shares)			(708,000)
Options outstanding, end of period (in shares)	2,558,000		2,558,000
Options vested and expected to vest, net of estimated forfeitures, as of end of period (in shares)	1,116,000		1,116,000
Options exercisable as of end of period (in shares)	0		0
Weighted average exercise price [Abstract]
Options outstanding as of beginning of period (in dollars per share)			$ 10.07
Granted (in dollars per share)			$ 10.11
Forfeited/cancelled (in dollars per share)			$ 9.83
Options outstanding as of end of period (in dollars per share)	$ 10.16		$ 10.16
Options vested and expected to vest, net of estimated forfeitures, as of end of period (in dollars per share)	$ 10.11		$ 10.11
Options exercisable as of end of period (in dollars per share)	$ 0		$ 0
Weighted average remaining contractual term [Abstract]
Options outstanding as of end of period			8 years 8 months 26 days
Options vested and expected to vest, net of estimated forfeitures, as of end of period			9 years 7 months 20 days
Options exercisable as of end of period			0 days
Aggregate intrinsic value [Abstract]
Options outstanding as of end of period	1,476,000		1,476,000
Options vested and expected to vest, net of estimated forfeitures, as of end of period	0		0
Options exercisable as of end of period	0		0
Non-vested restricted stock units and performance-based restricted stock unit awards [Roll Forward]
Non-vested awards outstanding as of end of period (in shares)	2,600,000		2,600,000
Aggregate Intrinsic Value [Abstract]
Total stock-based compensation expense before income taxes	205,000		323,000
Unrecognized compensation cost, net of estimated forfeitures	6,500,000		6,500,000
Unrecognized compensation cost, weighted-average period of recognition			1 year 9 months 7 days
Performance-based Restricted Stock Unit Awards [Member]
Non-vested restricted stock units and performance-based restricted stock unit awards [Roll Forward]
Granted (in shares)			254,928
Dividend Equivalents Issued (in shares)			32,000	78,000
Non-vested awards outstanding as of end of period (in shares)	270,760		270,760
Covisint LTIP (2009) [Member] | Stock Options [Member]
Stock option activity [Roll Forward]
Options outstanding, end of period (in shares)	4,600,000		4,600,000
LTIP (2007) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum percentage of employee compensation allowed to be withheld (in hundredths)			10.00%
Discount rate for purchase of common stock (in hundredths)			5.00%
LTIP (2007) [Member] | Non-vested RSU [Member]
Non-vested restricted stock units and performance-based restricted stock unit awards [Roll Forward]
Non-vested awards outstanding as of beginning of period (in shares)			2,124,000
Granted (in shares)			1,416,000
Dividend Equivalents Issued (in shares)			32,000
Released (in shares)			(614,000)
Forfeited (in shares)			(38,000)
Non-vested awards outstanding as of end of period (in shares)	2,920,000		2,920,000
Weighted Average Grant-Date Fair Value [Abstract]
Granted (in dollars per share)			$ 10.10
Dividend Equivalents Issue (in dollars per share)			$ 9.98
Aggregate Intrinsic Value [Abstract]
Released			5,869,000
Employee Stock Purchase Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expense recognized related to 401(k) program	$ 666,000	$ 733,000	$ 1,500,000	$ 1,600,000