Commitments and Contingencies (Details 2) (Claim relating to a 2001 international software development agreement, USD $) In Millions, unless otherwise specified	Dec. 31, 2012
Claim relating to a 2001 international software development agreement
Contingencies
Maximum damages to the counterparty to the agreement from DST's failure to accept the software	$ 10
Carrying value of loss accrual	$ 5.4

The estimated maximum amount of possible loss from the contingency.

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