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Description of Business	12 Months Ended
Description of Business	Dec. 31, 2016
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Description of Business	Description of Business DST Systems, Inc. and consolidated subsidiaries (“we,” “our,” “us,” the “Company” or “DST”) use proprietary software applications to provide sophisticated information processing and servicing solutions, through strategically unified business processing and data management, to clients globally within the asset management, brokerage, retirement, healthcare and other markets. Our wholly-owned data centers provide the secure technology infrastructure necessary to support our solutions. We manage our business through our two operating segments, Financial Services and Healthcare Services. Investments in equity securities, private equity investments, real estate and certain financial interests have been aggregated into the Investments and Other segment. On July 1, 2016, we completed the sale of our North American Customer Communications business. Additionally, during 2016, our Board of Directors approved a plan for management to pursue the divestiture of our United Kingdom Customer Communications business. As a result, beginning in 2016, the Customer Communications segment, as well as certain businesses previously reported within the Financial Services segment that were part of the July 1, 2016 sale, have been reported as discontinued operations. Prior period amounts have been adjusted to be consistent with the current discontinued operations presentation. See Note 4, Discontinued Operations, for additional information.