Computation of Earnings per Common Share (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2012
Basic earnings per share:
Numerator: Net income attributable to Compuware Corporation	$ 25,022	$ 25,340	$ 51,329	$ 46,402
Denominator:
Weighted-average common shares outstanding (in shares)	216,856,000	212,836,000	215,146,000	215,318,000
Basic earnings per share (in dollars per share)	$ 0.12	$ 0.12	$ 0.24	$ 0.22
Diluted earnings per share:
Numerator: Net income attributable to Compuware Corporation	$ 25,022	$ 25,340	$ 51,329	$ 46,402
Denominator:
Weighted-average common shares outstanding (in shares)	216,856,000	212,836,000	215,146,000	215,318,000
Dilutive effect of stock awards (in shares)	4,705,000	4,036,000	5,530,000	4,153,000
Total shares (in shares)	221,561,000	216,872,000	220,676,000	219,471,000
Diluted earnings per share (in dollars per share)	$ 0.11	$ 0.12	$ 0.23	$ 0.21
Anti-dilutive shares related to stock awards excluded from EPS calculation (in shares)	3,300,000	7,800,000	3,000,000	11,800,000
Performance shares not included in EPS (in shares)	2,900,000	5,300,000	3,800,000	2,800,000