Basis Of Presentation and Significant Accounting Policies	9 Months Ended
Sep. 30, 2016
Accounting Policies [Abstract]
Basis of Presentation and Significant Accounting Policies	Basis of Presentation and Significant Accounting Policies Basis of Presentation: The accompanying unaudited consolidated financial statements have been prepared in accordance with U.S. generally accepted accounting principles, or GAAP, for interim financial reporting. Accordingly, they do not include all of the information and footnotes required by GAAP for annual financial statements. We have omitted certain footnote disclosures that would substantially duplicate the disclosures in our 2015 Annual Report on Form 10-K, unless the information contained in those disclosures materially changed or is required by GAAP. Certain prior year amounts have been reclassified to conform to the current year presentation. In the opinion of management, all adjustments, including normal recurring adjustments, necessary for a fair statement of the consolidated financial statements as of and for the three and nine months ended September 30, 2016 and 2015 have been recorded. The results of operations for the three and nine months ended September 30, 2016 are not necessarily indicative of the results that may be expected for the full year ending December 31, 2016. These unaudited consolidated financial statements should be read in conjunction with our audited consolidated financial statements for the year ended December 31, 2015 included in our 2015 Annual Report on Form 10-K. Certain of our subsidiaries operate outside of the United States and have functional currencies other than the U.S. dollar, or USD. We translate the assets and liabilities of those subsidiaries to USD using the exchange rate in effect at the end of the period. We translate the revenues and expenses of those subsidiaries to USD using the average exchange rates in effect during the period. The net effect of these translation adjustments is included in “Foreign currency translation adjustments” in our consolidated statements of comprehensive income. Additionally, we control a number of bank accounts that are used exclusively to hold customer funds for the administration of customer benefits. At September 30, 2016 and December 31, 2015, we held $83.9 and $122.6, respectively, of customer funds with an offsetting liability in other current liabilities. Recently Adopted Accounting Guidance: In April 2015, the Financial Accounting Standards Board, or FASB, issued Accounting Standards Update No. 2015-05, Intangibles - Goodwill and Other - Internal-Use Software (Subtopic 350-40): Customer’s Accounting for Fees Paid in a Cloud Computing Arrangement, or ASU 2015-05. This update provides guidance to help entities determine whether a cloud computing arrangement contains a software license that should be accounted for as internal-use software or as a service contract. ASU 2015-05 became effective January 1, 2016 and we elected to adopt the provisions of the new guidance prospectively to all arrangements entered into or materially modified on or after January 1, 2016. The adoption of ASU 2015-05 did not have an impact on our consolidated financial position, results of operations or cash flows. In February 2015, the FASB issued Accounting Standards Update No. 2015-02, Consolidation (Topic 810): Amendments to the Consolidation Analysis, or ASU 2015-02. This update amended the consolidation guidance by modifying the evaluation criteria for whether limited partnerships and similar legal entities are variable interest entities or voting interest entities, eliminating the presumption that a general partner should consolidate a limited partnership, and affecting the consolidation analysis of reporting entities that are involved with variable interest entities. We adopted the provisions of ASU 2015-02 effective January 1, 2016 and re-evaluated all legal entity investments under the revised consolidation model. The adoption of ASU 2015-02 did not have a material impact on our consolidated financial position, results of operations or cash flows. Recent Accounting Guidance Not Yet Adopted: In August 2016, the FASB issued Accounting Standards Update No. 2016-15, Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments, or ASU 2016-15. This update addresses the presentation and classification on the statement of cash flows for eight specific items, with the objective of reducing existing diversity in practice in how certain cash receipts and cash payments are presented and classified. ASU 2016-15 is effective for interim and annual reporting periods beginning after December 15, 2017, with early adoption permitted. We are currently evaluating the effects the adoption of ASU 2016-15 will have on our consolidated statements of cash flows, if any. ASU 2016-15 will not impact our results of operations. In June 2016, the FASB issued Accounting Standards Update No. 2016-13, Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments, or ASU 2016-13. This update introduces a current expected credit loss model for measuring expected credit losses for certain types of financial instruments held at the reporting date based on historical experience, current conditions and reasonable supportable forecasts. ASU 2016-13 replaces the current incurred loss model for measuring expected credit losses, requires expected losses on available-for-sale debt securities to be recognized through an allowance for credit losses rather than as reductions in the amortized cost of the securities, and provides for additional disclosure requirements. ASU 2016-13 is effective for interim and annual reporting periods beginning after December 15, 2019, with early adoption permitted for interim and annual reporting periods beginning after December 15, 2018. We are currently evaluating the effects the adoption of ASU 2016-13 will have on our consolidated financial statements, results of operations and cash flows. In May 2016, the FASB issued Accounting Standards Update No. 2016-12, Revenue from Contracts With Customers (Topic 606): Narrow-Scope Improvements and Practical Expedients, or ASU 2016-12. In April 2016, the FASB issued Accounting Standards Update No. 2016-10, Revenue from Contracts with Customers (Topic 606): Identifying Performance Obligations and Licensing, or ASU 2016-10. In March 2016, the FASB issued Accounting Standards Update No. 2016-08, Revenue from Contracts with Customers (Topic 606): Principal versus Agent Considerations (Reporting Revenue Gross verses Net), or ASU 2016-08. These updates provide additional clarification and implementation guidance on the previously issued Accounting Standards Update No. 2014-09, Revenue from Contracts with Customers (Topic 606), or ASU 2014-09. The amendments in ASU 2016-12 provide clarifying guidance on assessing collectability; noncash consideration; presentation of sales taxes; and transition. The amendments in ASU 2016-10 provide clarifying guidance on materiality of performance obligations; evaluating distinct performance obligations; treatment of shipping and handling costs; and determining whether an entity's promise to grant a license provides a customer with either a right to use or a right to access an entity's intellectual property. The amendments in ASU 2016-08 clarify how an entity should identify the specified good or service for the principal versus agent evaluation and how it should apply the control principle to certain types of arrangements. The adoption of ASU 2016-12, ASU 2016-10 and ASU 2016-08 is to coincide with an entity's adoption of ASU 2014-09, which we intend to adopt for interim and annual reporting periods beginning after December 15, 2017. Upon the effective date, these updates will supersede almost all existing revenue recognition guidance under GAAP, with certain exceptions, including an exception for our premium revenues accounted for in accordance with the provisions of Accounting Standards Codification Topic 944, Financial Services - Insurance. These updates will require a company to recognize revenue when it transfers promised goods or services to customers in an amount that reflects the consideration to which the company expects to be entitled in exchange for those goods or services. The new guidance permits adoption through either a full retrospective approach or a modified retrospective approach with a cumulative effect adjustment to retained earnings. We are currently evaluating the impact that these updates will have on our results of operations, cash flows, consolidated financial position and related disclosures and the method of adoption we will ultimately choose. In March 2016, the FASB issued Accounting Standards Update No. 2016-09, Compensation - Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting, or ASU 2016-09. The amendments in this update simplify several aspects of accounting for and reporting on share-based payment transactions, including the income tax consequences, classification of awards as either equity or liabilities, and classification on the statement of cash flows. The amendments in ASU 2016-09 are effective for interim and annual reporting periods beginning after December 15, 2016, with early adoption permitted. The various amendments are to be applied differently upon adoption with certain amendments being applied prospectively, retrospectively and under a modified retrospective transition method. We are currently evaluating the effects the adoption of ASU 2016-09 will have on our consolidated financial statements, results of operations and cash flows. In February 2016, the FASB issued Accounting Standards Update No. 2016-02, Leases (Topic 842), or ASU 2016-02. Upon the effective date, ASU 2016-02 will supersede the current lease guidance in Topic 840, Leases. Under the new guidance, lessees will be required to recognize for all leases, with the exception of short-term leases, a lease liability, which is a lessee’s obligation to make lease payments arising from a lease, measured on a discounted basis. Concurrently, lessees will be required to recognize a right-of-use asset, which is an asset that represents the lessee’s right to use, or control the use of, a specified asset for the lease term. ASU 2016-02 is effective for interim and annual reporting periods beginning after December 15, 2018, with early adoption permitted. The guidance is required to be applied using a modified retrospective transition approach for leases existing at, or entered into after, the beginning of the earliest comparative periods presented in the financial statements. We are currently evaluating the effects the adoption of ASU 2016-02 will have on our consolidated financial statements, results of operations and cash flows. There were no other new accounting pronouncements that were issued or became effective since the issuance of our 2015 Annual Report on Form 10-K that had, or are expected to have, a material impact on our consolidated financial position, results of operations or cash flows.

Basis of Presentation and Significant Accounting Policies

Basis of Presentation: The accompanying unaudited consolidated financial statements have been prepared in accordance with U.S. generally accepted accounting principles, or GAAP, for interim financial reporting. Accordingly, they do not include all of the information and footnotes required by GAAP for annual financial statements. We have omitted certain footnote disclosures that would substantially duplicate the disclosures in our 2015 Annual Report on Form 10-K, unless the information contained in those disclosures materially changed or is required by GAAP. Certain prior year amounts have been reclassified to conform to the current year presentation. In the opinion of management, all adjustments, including normal recurring adjustments, necessary for a fair statement of the consolidated financial statements as of and for the three and nine months ended September 30, 2016 and 2015 have been recorded. The results of operations for the three and nine months ended September 30, 2016 are not necessarily indicative of the results that may be expected for the full year ending December 31, 2016. These unaudited consolidated financial statements should be read in conjunction with our audited consolidated financial statements for the year ended December 31, 2015 included in our 2015 Annual Report on Form 10-K.

Certain of our subsidiaries operate outside of the United States and have functional currencies other than the U.S. dollar, or USD. We translate the assets and liabilities of those subsidiaries to USD using the exchange rate in effect at the end of the period. We translate the revenues and expenses of those subsidiaries to USD using the average exchange rates in effect during the period. The net effect of these translation adjustments is included in “Foreign currency translation adjustments” in our consolidated statements of comprehensive income. Additionally, we control a number of bank accounts that are used exclusively to hold customer funds for the administration of customer benefits. At September 30, 2016 and December 31, 2015, we held $83.9 and $122.6, respectively, of customer funds with an offsetting liability in other current liabilities.

Recently Adopted Accounting Guidance: In April 2015, the Financial Accounting Standards Board, or FASB, issued Accounting Standards Update No. 2015-05, Intangibles - Goodwill and Other - Internal-Use Software (Subtopic 350-40): Customer’s Accounting for Fees Paid in a Cloud Computing Arrangement, or ASU 2015-05. This update provides guidance to help entities determine whether a cloud computing arrangement contains a software license that should be accounted for as internal-use software or as a service contract. ASU 2015-05 became effective January 1, 2016 and we elected to adopt the provisions of the new guidance prospectively to all arrangements entered into or materially modified on or after January 1, 2016. The adoption of ASU 2015-05 did not have an impact on our consolidated financial position, results of operations or cash flows.

In February 2015, the FASB issued Accounting Standards Update No. 2015-02, Consolidation (Topic 810): Amendments to the Consolidation Analysis, or ASU 2015-02. This update amended the consolidation guidance by modifying the evaluation criteria for whether limited partnerships and similar legal entities are variable interest entities or voting interest entities, eliminating the presumption that a general partner should consolidate a limited partnership, and affecting the consolidation analysis of reporting entities that are involved with variable interest entities. We adopted the provisions of ASU 2015-02 effective January 1, 2016 and re-evaluated all legal entity investments under the revised consolidation model. The adoption of ASU 2015-02 did not have a material impact on our consolidated financial position, results of operations or cash flows.

Recent Accounting Guidance Not Yet Adopted: In August 2016, the FASB issued Accounting Standards Update No. 2016-15, Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments, or ASU 2016-15. This update addresses the presentation and classification on the statement of cash flows for eight specific items, with the objective of reducing existing diversity in practice in how certain cash receipts and cash payments are presented and classified. ASU 2016-15 is effective for interim and annual reporting periods beginning after December 15, 2017, with early adoption permitted. We are currently evaluating the effects the adoption of ASU 2016-15 will have on our consolidated statements of cash flows, if any. ASU 2016-15 will not impact our results of operations.

In June 2016, the FASB issued Accounting Standards Update No. 2016-13, Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments, or ASU 2016-13. This update introduces a current expected credit loss model for measuring expected credit losses for certain types of financial instruments held at the reporting date based on historical experience, current conditions and reasonable supportable forecasts. ASU 2016-13 replaces the current incurred loss model for measuring expected credit losses, requires expected losses on available-for-sale debt securities to be recognized through an allowance for credit losses rather than as reductions in the amortized cost of the securities, and provides for additional disclosure requirements. ASU 2016-13 is effective for interim and annual reporting periods beginning after December 15, 2019, with early adoption permitted for interim and annual reporting periods beginning after December 15, 2018. We are currently evaluating the effects the adoption of ASU 2016-13 will have on our consolidated financial statements, results of operations and cash flows.

In May 2016, the FASB issued Accounting Standards Update No. 2016-12, Revenue from Contracts With Customers (Topic 606): Narrow-Scope Improvements and Practical Expedients, or ASU 2016-12. In April 2016, the FASB issued Accounting Standards Update No. 2016-10, Revenue from Contracts with Customers (Topic 606): Identifying Performance Obligations and Licensing, or ASU 2016-10. In March 2016, the FASB issued Accounting Standards Update No. 2016-08, Revenue from Contracts with Customers (Topic 606): Principal versus Agent Considerations (Reporting Revenue Gross verses Net), or ASU 2016-08. These updates provide additional clarification and implementation guidance on the previously issued Accounting Standards Update No. 2014-09, Revenue from Contracts with Customers (Topic 606), or ASU 2014-09. The amendments in ASU 2016-12 provide clarifying guidance on assessing collectability; noncash consideration; presentation of sales taxes; and transition. The amendments in ASU 2016-10 provide clarifying guidance on materiality of performance obligations; evaluating distinct performance obligations; treatment of shipping and handling costs; and determining whether an entity's promise to grant a license provides a customer with either a right to use or a right to access an entity's intellectual property. The amendments in ASU 2016-08 clarify how an entity should identify the specified good or service for the principal versus agent evaluation and how it should apply the control principle to certain types of arrangements. The adoption of ASU 2016-12, ASU 2016-10 and ASU 2016-08 is to coincide with an entity's adoption of ASU 2014-09, which we intend to adopt for interim and annual reporting periods beginning after December 15, 2017. Upon the effective date, these updates will supersede almost all existing revenue recognition guidance under GAAP, with certain exceptions, including an exception for our premium revenues accounted for in accordance with the provisions of Accounting Standards Codification Topic 944, Financial Services - Insurance. These updates will require a company to recognize revenue when it transfers promised goods or services to customers in an amount that reflects the consideration to which the company expects to be entitled in exchange for those goods or services. The new guidance permits adoption through either a full retrospective approach or a modified retrospective approach with a cumulative effect adjustment to retained earnings. We are currently evaluating the impact that these updates will have on our results of operations, cash flows, consolidated financial position and related disclosures and the method of adoption we will ultimately choose.

In March 2016, the FASB issued Accounting Standards Update No. 2016-09, Compensation - Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting, or ASU 2016-09. The amendments in this update simplify several aspects of accounting for and reporting on share-based payment transactions, including the income tax consequences, classification of awards as either equity or liabilities, and classification on the statement of cash flows. The amendments in ASU 2016-09 are effective for interim and annual reporting periods beginning after December 15, 2016, with early adoption permitted. The various amendments are to be applied differently upon adoption with certain amendments being applied prospectively, retrospectively and under a modified retrospective transition method. We are currently evaluating the effects the adoption of ASU 2016-09 will have on our consolidated financial statements, results of operations and cash flows.

In February 2016, the FASB issued Accounting Standards Update No. 2016-02, Leases (Topic 842), or ASU 2016-02. Upon the effective date, ASU 2016-02 will supersede the current lease guidance in Topic 840, Leases. Under the new guidance, lessees will be required to recognize for all leases, with the exception of short-term leases, a lease liability, which is a lessee’s obligation to make lease payments arising from a lease, measured on a discounted basis. Concurrently, lessees will be required to recognize a right-of-use asset, which is an asset that represents the lessee’s right to use, or control the use of, a specified asset for the lease term. ASU 2016-02 is effective for interim and annual reporting periods beginning after December 15, 2018, with early adoption permitted. The guidance is required to be applied using a modified retrospective transition approach for leases existing at, or entered into after, the beginning of the earliest comparative periods presented in the financial statements. We are currently evaluating the effects the adoption of ASU 2016-02 will have on our consolidated financial statements, results of operations and cash flows.

There were no other new accounting pronouncements that were issued or became effective since the issuance of our 2015 Annual Report on Form 10-K that had, or are expected to have, a material impact on our consolidated financial position, results of operations or cash flows.