Aggregate Principal Amount Percentage Required to declare Debt Instrument Immediately Due

No definition available.

Name:	jdas_AggregatePrincipalAmountPercentageRequiredToDeclareDebtInstrumentImmediatelyDue
Namespace Prefix:	jdas_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Increase in basis points of the stated interest rate on the debt instrument.

+ References

No definition available.

+ Details

Name:	jdas_DebtInstrumentBasisPointInterestRateIncrease
Namespace Prefix:	jdas_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	duration

- Definition

Debt Instrument, Call Feature , Redemption Rate, two years before maturity

+ References

No definition available.

+ Details

Name:	jdas_DebtInstrumentCallFeatureRedemptionRateTwoYearsBeforeMaturity
Namespace Prefix:	jdas_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Debt instrument, Call Feature, Redemption Rate within one year of maturity

+ References

No definition available.

+ Details

Name:	jdas_DebtInstrumentCallFeatureRedemptionRateWithinOneYearOfMaturity
Namespace Prefix:	jdas_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Debt Instrument, Covenant, Redemption Rate

+ References

No definition available.

+ Details

Name:	jdas_DebtInstrumentCovenantRedemptionRate
Namespace Prefix:	jdas_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Debt Instrument Discount Rate at Issuance

+ References

No definition available.

+ Details

Name:	jdas_DebtInstrumentDiscountRateAtIssuance
Namespace Prefix:	jdas_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Debt instrument, Equity Issuance Call Feature, Maximum Percentage of Principal Amount Available For Redemption

+ References

No definition available.

+ Details

Name:	jdas_DebtInstrumentEquityIssuanceCallFeatureMaximumPercentageOfPrincipalAmountAvailableForRedemption
Namespace Prefix:	jdas_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Debt Instrument, Equity Issuance Call Feature, Redemption Rate

+ References

No definition available.

+ Details

Name:	jdas_DebtInstrumentEquityIssuanceCallFeatureRedemptionRate
Namespace Prefix:	jdas_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Debt Instrument, Interest Rate Increase, Amount

+ References

No definition available.

+ Details

Name:	jdas_DebtInstrumentInterestRateIncreaseAmount
Namespace Prefix:	jdas_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Debt instrument, Make Whole Call Feature, Premium as a Percentage of Principal Amount Redeemed

+ References

No definition available.

+ Details

Name:	jdas_DebtInstrumentMakeWholeCallFeaturePremiumAsPercentageOfPrincipalAmountRedeemed
Namespace Prefix:	jdas_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Debt Instrument, Make Whole Call Feature, Redemption Rate

+ References

No definition available.

+ Details

Name:	jdas_DebtInstrumentMakeWholeCallFeatureRedemptionRate
Namespace Prefix:	jdas_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Debt Issuance Cost

+ References

No definition available.

+ Details

Name:	jdas_DebtIssuanceCost
Namespace Prefix:	jdas_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Interim interest rate on principal amount of the Senior Notes from the Registration Deadline through the completion of the exchange offer.

+ References

No definition available.

+ Details

Name:	jdas_InterimInterestRateOnPrincipalAmountOfSeniorNotesFromRegistrationDeadlineThroughCompletionOfExchangeOffer
Namespace Prefix:	jdas_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The stated principal amount of the debt instrument at time of issuance, which may vary from the carrying amount because of unamortized premium or discount.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher AICPA

-Name Accounting Principles Board Opinion (APB)

-Number 21

-Paragraph 16, 20

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 45

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 55

-Paragraph 8

-URI http://asc.fasb.org/extlink&oid=6584090&loc=d3e28878-108400

+ Details

Name:	us-gaap_DebtInstrumentFaceAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 825

-SubTopic 10

-Section 50

-Paragraph 10

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=6947722&loc=d3e13433-108611

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 825

-SubTopic 10

-Section 50

-Paragraph 12

-URI http://asc.fasb.org/extlink&oid=6947722&loc=d3e13476-108611

+ Details

Name:	us-gaap_DebtInstrumentFairValue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Interest rate stated in the contractual debt agreement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.22(a)(1))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

Name:	us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Details

Name:	us-gaap_DebtInstrumentLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The amount of debt discount that was originally recognized at the issuance of the instrument that has yet to be amortized.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name FASB Staff Position (FSP)

-Number APB14-1

-Paragraph 31

-Subparagraph b

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher AICPA

-Name Accounting Principles Board Opinion (APB)

-Number 21

-Paragraph 16, 20

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 45

-Paragraph 1A

-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28541-108399

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 55

-Paragraph 8

-URI http://asc.fasb.org/extlink&oid=6584090&loc=d3e28878-108400

+ Details

Name:	us-gaap_DebtInstrumentUnamortizedDiscount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Long-term Debt Long-term Debt (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended	3 Months Ended		1 Months Ended				5 Months Ended
	Dec. 31, 2010	Mar. 31, 2012 Corporate Debt Securities [Member]	Dec. 10, 2009 Corporate Debt Securities [Member]	Dec. 31, 2009 Corporate Debt Securities [Member] Eight Percent Senior Notes Due December 2014 [Member]	Mar. 31, 2012 Corporate Debt Securities [Member] Eight Percent Senior Notes Due December 2014 [Member]	Dec. 31, 2011 Corporate Debt Securities [Member] Eight Percent Senior Notes Due December 2014 [Member]	Dec. 10, 2009 Corporate Debt Securities [Member] Eight Percent Senior Notes Due December 2014 [Member]	Aug. 31, 2012 Subsequent Event [Member] Eight Percent Senior Notes Due December 2014 [Member] Corporate Debt Securities [Member]	Aug. 31, 2012 Subsequent Event [Member] Corporate Debt Securities [Member] Eight Percent Senior Notes Due December 2014 [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount							$ 275
Debt Instrument, Interest Rate, Stated Percentage							8.00%
Debt Instrument Discount Rate at Issuance							98.988%
Debt Instrument, Unamortized Discount							2.8
Debt Issuance Cost				7.2
Debt Instrument, Interest Rate Increase									50
Debt Instrument, Interest Rate Increase, Amount								0.3
Debt instrument, Equity Issuance Call Feature, Maximum Percentage of Principal Amount Available For Redemption		35.00%
Debt Instrument, Equity Issuance Call Feature, Redemption Rate		108.00%
Debt Instrument, Make Whole Call Feature, Redemption Rate		100.00%
Debt instrument, Make Whole Call Feature, Premium as a Percentage of Principal Amount Redeemed		1.00%
Debt Instrument, Call Feature , Redemption Rate, two years before maturity		104.00%
Debt instrument, Call Feature, Redemption Rate within one year of maturity		100.00%
Debt Instrument, Covenant, Redemption Rate			101.00%
Aggregate Principal Amount Percentage Required to declare Debt Instrument Immediately Due			25.00%
Interim interest rate on principal amount of the Senior Notes from the Registration Deadline through the completion of the exchange offer	0.25%
Debt Instrument, Fair Value Disclosure					$ 297.0	$ 296.3