Condensed Consolidating Statements of Cash Flows (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010		Dec. 31, 2009
Condensed Financial Statements, Captions [Line Items]
Net cash (used in) provided by operating activities	$ 109,831
Investing Activities:
Change in restricted cash	25,470
Purchase of equity interest	0
Purchase of i2 Technologies, Inc.	0
Purchase of property and equipment	(19,444)
Proceeds from disposal of property and equipment	53
Net cash (used in) provided by investing activities	6,079
Financing Activities:
Issuance of common stock — equity plans	7,958
Excess tax benefits for stock-based compensation	(1,216)
Purchase of treasury stock and other, net	(5,745)
Redemption of redeemable preferred stock	0
Debt Issuance Costs	(1,727)
Conversion of warrants	671
Conversion of warrants	671	179
Change in intercompany receivable/payable	0
Net cash (used in) provided by financing activities	(59)
Effect of exchange rates on cash and cash equivalents	(1,957)
Net increase (decrease) in cash and cash equivalent	113,894
Cash and Cash Equivalents, Beginning of Period	171,618
Cash and Cash Equivalents, End of Period	285,512	171,618
JDA Software Group, Inc. [Member]
Condensed Financial Statements, Captions [Line Items]
Net cash (used in) provided by operating activities	79,205	204,881		41,187
Investing Activities:
Change in restricted cash	25,013	262,862		(287,875)
Purchase of equity interest				0
Purchase of i2 Technologies, Inc.		(431,775)
Purchase of property and equipment	0	0		0
Proceeds from disposal of property and equipment	0	0		0
Net cash (used in) provided by investing activities	25,013	(168,913)		(287,875)
Financing Activities:
Issuance of common stock — equity plans	7,958	14,893		14,849
Excess tax benefits for stock-based compensation	(1,216)	278		720
Purchase of treasury stock and other, net	(5,745)	(5,306)		(6,543)
Redemption of redeemable preferred stock				(28,068)
Proceeds from issuance of long-term debt, net of discount				272,217
Debt Issuance Costs	(1,727)			(6,487)
Conversion of warrants	671
Conversion of warrants		179
Change in intercompany receivable/payable	0	0		0
Net cash (used in) provided by financing activities	(59)	10,044		246,688
Effect of exchange rates on cash and cash equivalents	0	0		0
Net increase (decrease) in cash and cash equivalent	104,159	46,012		0
Cash and Cash Equivalents, Beginning of Period	46,012	0		0
Cash and Cash Equivalents, End of Period	150,171	46,012		0
Guarantor Subsidiaries [Member]
Condensed Financial Statements, Captions [Line Items]
Net cash (used in) provided by operating activities	26,021
Investing Activities:
Change in restricted cash	493
Purchase of property and equipment	(15,170)
Proceeds from disposal of property and equipment	42
Net cash (used in) provided by investing activities	(14,635)
Financing Activities:
Issuance of common stock — equity plans	0
Purchase of treasury stock and other, net	0
Debt Issuance Costs	0
Conversion of warrants	0
Conversion of warrants		0
Change in intercompany receivable/payable	(5,720)
Net cash (used in) provided by financing activities	(5,720)
Effect of exchange rates on cash and cash equivalents	0
Net increase (decrease) in cash and cash equivalent	5,666
Cash and Cash Equivalents, Beginning of Period	87,619
Cash and Cash Equivalents, End of Period	93,285	87,619
Non-Guarantor Subsidiaries [Member]
Condensed Financial Statements, Captions [Line Items]
Net cash (used in) provided by operating activities	4,605	25,521		3,877
Investing Activities:
Change in restricted cash	(36)	(834)		0
Purchase of equity interest				2,079
Purchase of i2 Technologies, Inc.		0
Purchase of property and equipment	(4,274)	(6,269)		(2,466)
Proceeds from disposal of property and equipment	11	31		49
Net cash (used in) provided by investing activities	(4,299)	(7,072)		(4,496)
Financing Activities:
Issuance of common stock — equity plans	0	0		0
Excess tax benefits for stock-based compensation		0		0
Purchase of treasury stock and other, net	0	0		0
Redemption of redeemable preferred stock				0
Proceeds from issuance of long-term debt, net of discount				0
Debt Issuance Costs	0			0
Conversion of warrants	0
Conversion of warrants		0
Change in intercompany receivable/payable	5,720	(9,759)		6,703
Net cash (used in) provided by financing activities	5,720	(9,759)		6,703
Effect of exchange rates on cash and cash equivalents	(1,957)	493		865
Net increase (decrease) in cash and cash equivalent	4,069	9,183		6,949
Cash and Cash Equivalents, Beginning of Period	37,987	28,804		21,855
Cash and Cash Equivalents, End of Period	42,056	37,987		28,804
Eliminations [Member]
Condensed Financial Statements, Captions [Line Items]
Net cash (used in) provided by operating activities	0	0		0
Investing Activities:
Change in restricted cash	0	0		0
Purchase of equity interest				0
Purchase of i2 Technologies, Inc.		0
Purchase of property and equipment	0	0		0
Proceeds from disposal of property and equipment	0	0		0
Net cash (used in) provided by investing activities	0	0		0
Financing Activities:
Issuance of common stock — equity plans	0	0		0
Excess tax benefits for stock-based compensation		0		0
Purchase of treasury stock and other, net	0	0		0
Redemption of redeemable preferred stock				0
Proceeds from issuance of long-term debt, net of discount				0
Debt Issuance Costs	0			0
Conversion of warrants	0
Conversion of warrants		0
Change in intercompany receivable/payable	0	0		0
Net cash (used in) provided by financing activities	0	0		0
Effect of exchange rates on cash and cash equivalents	0	0		0
Net increase (decrease) in cash and cash equivalent	0	0		0
Cash and Cash Equivalents, Beginning of Period	0	0		0
Cash and Cash Equivalents, End of Period	0	0		0
As Restated [Member]
Condensed Financial Statements, Captions [Line Items]
Net cash (used in) provided by operating activities		61,746	[1]	92,731	[1]
Investing Activities:
Change in restricted cash		253,020	[1]	(287,875)	[1]
Purchase of equity interest		0	[1]	2,079	[1]
Purchase of i2 Technologies, Inc.		(213,427)	[1]	0	[1]
Purchase of property and equipment		(16,866)	[1]	(7,136)	[1]
Proceeds from disposal of property and equipment		634	[1]	84	[1]
Net cash (used in) provided by investing activities		23,361	[1]	(297,006)	[1]
Financing Activities:
Issuance of common stock — equity plans		14,893	[1]	14,849	[1]
Excess tax benefits for stock-based compensation		278	[1]	720	[1]
Purchase of treasury stock and other, net		(5,306)	[1]	(6,543)	[1]
Redemption of redeemable preferred stock		0	[1]	(28,068)	[1]
Proceeds from issuance of long-term debt, net of discount				272,217
Debt Issuance Costs		0	[1]	(6,487)	[1]
Conversion of warrants		179	[1]	0	[1]
Change in intercompany receivable/payable		0		0
Net cash (used in) provided by financing activities		10,044	[1]	246,688	[1]
Effect of exchange rates on cash and cash equivalents		493	[1]	865	[1]
Net increase (decrease) in cash and cash equivalent		95,644	[1]	43,278	[1]
Cash and Cash Equivalents, Beginning of Period		75,974	[1]	32,696	[1]
Cash and Cash Equivalents, End of Period		171,618	[1]	75,974	[1]
As Restated [Member] | Guarantor Subsidiaries [Member]
Condensed Financial Statements, Captions [Line Items]
Net cash (used in) provided by operating activities		(168,656)		47,667
Investing Activities:
Change in restricted cash		(9,008)		0
Purchase of equity interest				0
Purchase of i2 Technologies, Inc.		218,348
Purchase of property and equipment		(10,597)		(4,670)
Proceeds from disposal of property and equipment		603		35
Net cash (used in) provided by investing activities		199,346		(4,635)
Financing Activities:
Issuance of common stock — equity plans		0		0
Excess tax benefits for stock-based compensation		0		0
Purchase of treasury stock and other, net		0		0
Redemption of redeemable preferred stock				0
Proceeds from issuance of long-term debt, net of discount				0
Debt Issuance Costs				0
Change in intercompany receivable/payable		9,759		(6,703)
Net cash (used in) provided by financing activities		9,759		(6,703)
Effect of exchange rates on cash and cash equivalents		0		0
Net increase (decrease) in cash and cash equivalent		40,449		36,329
Cash and Cash Equivalents, Beginning of Period		47,170		10,841
Cash and Cash Equivalents, End of Period		$ 87,619		$ 47,170

[1] As restated - See Note 23 “Restatement of Previously Issued Financial Statements” of Notes to Consolidated Financial Statements.