Basis of Presentation and Summary of Significant Accounting Policies - Goodwill (Details) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Basis of Presentation and Summary of Significant Accounting Policies
Equity investment goodwill	$ 48.8	$ 46.1

The portion of the difference between amount at which an investment accounted for under the equity method of accounting is carried (reported) on the balance sheet and amount of underlying equity in net assets the reporting Entity has in the investee attributable to goodwill.

No definition available.

Name:	tss_EquityMethodInvestmentDifferenceBetweenCarryingAmountAndUnderlyingEquityGoodwill
Namespace Prefix:	tss_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant