Name:	dst_ContractualObligation
Namespace Prefix:	dst_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Amount of contractual obligation maturing after the fifth fiscal year following the latest fiscal year.

No definition available.

Name:	dst_ContractualObligationDueAfterFifthYear
Namespace Prefix:	dst_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Amount of contractual obligation maturing in the fifth fiscal year following the latest fiscal year.

No definition available.

Name:	dst_ContractualObligationDueInFifthYear
Namespace Prefix:	dst_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Amount of contractual obligation maturing in the fourth fiscal year following the latest fiscal year.

No definition available.

Name:	dst_ContractualObligationDueInFourthYear
Namespace Prefix:	dst_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Amount of contractual obligation maturing in the next fiscal year following the latest fiscal year.

No definition available.

Name:	dst_ContractualObligationDueInNextTwelveMonths
Namespace Prefix:	dst_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Amount of contractual obligation maturing in the second fiscal year following the latest fiscal year.

No definition available.

Name:	dst_ContractualObligationDueInSecondYear
Namespace Prefix:	dst_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Amount of contractual obligation maturing in the third fiscal year following the latest fiscal year.

No definition available.

Name:	dst_ContractualObligationDueInThirdYear
Namespace Prefix:	dst_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Details

Name:	dst_ContractualObligationFiscalYearMaturityScheduleAbstract
Namespace Prefix:	dst_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	dst_ContractualObligationsAndOtherCommitmentsLineItems
Namespace Prefix:	dst_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Represents the percentage voting/managing interest that the entity is entitled under partnership agreements.

No definition available.

Name:	dst_PartnershipAgreementsVotingManagingInterestPercent
Namespace Prefix:	dst_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

Represents the proportion of directors that the entity is entitled to elect under shareholder agreements of corporations.

No definition available.

Name:	dst_ShareholderAgreementsPortionOfDirectorsEntitledToElect
Namespace Prefix:	dst_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	duration

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 159

-Paragraph 18

-Subparagraph f

-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 18

-Paragraph 20

-Subparagraph a (1)

-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 323

-SubTopic 10

-Section 50

-Paragraph 3

-Subparagraph (a)(1)

-URI http://asc.fasb.org/extlink&oid=6382943&loc=d3e33918-111571