Summary of Accounting Policies (Policies)	9 Months Ended
Sep. 30, 2013
Organization, Consolidation and Presentation of Financial Statements [Abstract]
New Authoritative Accounting Guidance	New Authoritative Accounting Guidance In July 2013, the Financial Accounting Standards Board ("FASB") issued an accounting standard update, "Presentation of an Unrecognized Tax Benefit When a Net Operating Loss Carryforward, a Similar Tax Loss, or Tax Credit Carryforward Exists." This standard requires netting of unrecognized tax benefits against a deferred tax asset for a loss or other carryforward that would apply in settlement of the uncertain tax positions. This standard is effective prospectively for annual and interim periods beginning after December 15, 2013. The Company is currently evaluating the potential impact of this standard but does not expect it to materially impact the consolidated financial statements. On January 1, 2013, DST adopted new authoritative accounting guidance that modifies the reporting of reclassifications out of accumulated other comprehensive income. The standard requires an entity to report the effect of significant reclassifications out of accumulated other comprehensive income on the respective line items in the consolidated statement of income if the amount being reclassified is required to be reclassified in its entirety to net income. For other amounts that are not required to be reclassified in their entirety to net income in the same reporting period, an entity is required to cross-reference to other required disclosures that provide additional detail about those amounts. The adoption of this guidance did not have a significant effect on the consolidated financial statements. See note 10 for enhanced disclosures provided as a result of the new standard.

New Authoritative Accounting Guidance

In July 2013, the Financial Accounting Standards Board ("FASB") issued an accounting standard update, "Presentation of an Unrecognized Tax Benefit When a Net Operating Loss Carryforward, a Similar Tax Loss, or Tax Credit Carryforward Exists." This standard requires netting of unrecognized tax benefits against a deferred tax asset for a loss or other carryforward that would apply in settlement of the uncertain tax positions. This standard is effective prospectively for annual and interim periods beginning after December 15, 2013. The Company is currently evaluating the potential impact of this standard but does not expect it to materially impact the consolidated financial statements.

On January 1, 2013, DST adopted new authoritative accounting guidance that modifies the reporting of reclassifications out of accumulated other comprehensive income. The standard requires an entity to report the effect of significant reclassifications out of accumulated other comprehensive income on the respective line items in the consolidated statement of income if the amount being reclassified is required to be reclassified in its entirety to net income. For other amounts that are not required to be reclassified in their entirety to net income in the same reporting period, an entity is required to cross-reference to other required disclosures that provide additional detail about those amounts. The adoption of this guidance did not have a significant effect on the consolidated financial statements. See note 10 for enhanced disclosures provided as a result of the new standard.