Basis of Presentation and Accounting Policies (Policies)	3 Months Ended
Mar. 31, 2017
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation Certain information and footnote disclosures normally included in the financial statements prepared in accordance with generally accepted accounting principles have been condensed or omitted pursuant to the rules and regulations of the Securities and Exchange Commission, although we believe that the disclosures are adequate to make the information presented not misleading. These Consolidated Financial Statements should be read in conjunction with the Consolidated Financial Statements included in our 2016 Annual Report to Shareholders. The information furnished reflects all adjustments that, in the opinion of management, were necessary for a fair statement of the Consolidated Financial Statements for the periods presented. Such adjustments were of a normal recurring nature, unless otherwise disclosed. Payroll Tax Credit In March 2017 and March 2016, we entered into agreements to sell a portion of our French payroll tax credits earned in 2016 and 2015, respectively, for net proceeds of $143.5 (€133.0) and $143.1 (€129.9), respectively. We derecognized these receivables upon the sale date as the terms of the agreement are such that the transaction qualifies for sale treatment according to the accounting guidance on the transfer and servicing of assets. The discount on the sale of these receivables was recorded in cost of services as a reduction of the payroll tax credits earned in the respective year. Subsequent Events On April 26, 2017, the sellers of 7S Group GmbH ("7S"), a company we acquired in 2015, initiated a process under the acquisition agreement to dispute the contingent consideration related to the acquisition and are claiming an additional $22.7 (€20.8), plus interest. We believe no further amounts are due and intend to vigorously dispute their claims through this process. We are currently not able to predict the outcome of this process or the timing of any resolution and consequently no amounts have been recorded in the Consolidated Financial Statements. We have evaluated all other events and transactions occurring after the balance sheet date through our filing date and have accrued or disclosed, if appropriate.

Basis of Presentation

Certain information and footnote disclosures normally included in the financial statements prepared in accordance with generally accepted accounting principles have been condensed or omitted pursuant to the rules and regulations of the Securities and Exchange Commission, although we believe that the disclosures are adequate to make the information presented not misleading. These Consolidated Financial Statements should be read in conjunction with the Consolidated Financial Statements included in our 2016 Annual Report to Shareholders.

The information furnished reflects all adjustments that, in the opinion of management, were necessary for a fair statement of the Consolidated Financial Statements for the periods presented. Such adjustments were of a normal recurring nature, unless otherwise disclosed.

Payroll Tax Credit

In March 2017 and March 2016, we entered into agreements to sell a portion of our French payroll tax credits earned in 2016 and 2015, respectively, for net proceeds of $143.5 (€133.0) and $143.1 (€129.9), respectively. We derecognized these receivables upon the sale date as the terms of the agreement are such that the transaction qualifies for sale treatment according to the accounting guidance on the transfer and servicing of assets. The discount on the sale of these receivables was recorded in cost of services as a reduction of the payroll tax credits earned in the respective year.

Subsequent Events

On April 26, 2017, the sellers of 7S Group GmbH ("7S"), a company we acquired in 2015, initiated a process under the acquisition agreement to dispute the contingent consideration related to the acquisition and are claiming an additional $22.7 (€20.8), plus interest. We believe no further amounts are due and intend to vigorously dispute their claims through this process. We are currently not able to predict the outcome of this process or the timing of any resolution and consequently no amounts have been recorded in the Consolidated Financial Statements.

We have evaluated all other events and transactions occurring after the balance sheet date through our filing date and have accrued or disclosed, if appropriate.