Basis of Presentation and Accounting Policies (Policies)	9 Months Ended
	Sep. 30, 2015
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 2014 Annual Report to Shareholders. The information furnished reflects all adjustments that, in the opinion of management, were necessary for a fair statement of the results of operations for the periods presented. Such adjustments were of a normal recurring nature, unless otherwise disclosed.
Goodwill and Intangible Assets	Goodwill and Intangible Assets In accordance with the current accounting guidance for goodwill and other intangible assets, we perform an annual impairment test of goodwill at our reporting unit level and indefinite-lived intangible assets at our unit of account level during the third quarter, or more frequently if events or circumstances change that would more likely than not reduce the fair value of our reporting units below their carrying value.
Reclassification	Reclassification In connection with the adoption in the third quarter of 2015 of the new accounting guidance on debt issuance costs, we have reclassified certain amounts in prior-period financial statements to conform to the current period's presentation. On our consolidated balance sheets, we have reclassified debt issuance costs associated with our long-term debt from other assets to long-term debt (see Note 9 to the Consolidated Financial Statements).
Recently Issued Accounting Standards	In April 2014, the Financial Accounting Standards Board (“FASB”) issued new accounting guidance on reporting discontinued operations and disclosures of disposals of components of an entity. The new guidance changes the requirements for reporting discontinued operations. A discontinued operation may include a component of an entity or a group of components of an entity. A disposal of a component of an entity or a group of components of an entity is required to be reported in discontinued operations if the disposal represents a strategic shift that has (or will have) a major effect on an entity's operations and financial results and when the component or group of components meets the criteria to be classified as held for sale, is disposed by sale, or is disposed of other than by sale. We adopted this guidance effective January 1, 2015. There was no impact of this adoption on our Consolidated Financial Statements. In May 2014, the FASB issued new accounting guidance on revenue from contracts with customers. The core principle of this guidance is that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. The guidance is effective for us in the first quarter of 2018 and can be adopted either retrospectively to each prior reporting period presented or as a cumulative-effect adjustment as of the date of adoption. We are currently assessing the impact of the adoption of this guidance on our Consolidated Financial Statements. In September 2014, the FASB issued new accounting guidance on disclosure of uncertainties about an entity’s ability to continue as a going concern. The new guidance requires an entity’s management to evaluate whether there are conditions or events, considered in the aggregate, that raise substantial doubt about the entity’s ability to continue as a going concern within one year after the date that the financial statements are issued, and if so, disclose that fact. Management is also required to evaluate and disclose whether its plans alleviate that doubt. The guidance is effective for us in 2017 and will be applicable to both annual and interim reporting periods. We do not expect the adoption of this guidance to have an impact on our Consolidated Financial Statements. In January 2015, the FASB issued new accounting guidance on presentation of extraordinary items. The new guidance eliminates the separate presentation of extraordinary items, net of tax and the related earnings per share, but does not affect the requirement to disclose material items that are unusual in nature or infrequently occurring. The guidance is effective for us in 2016. We do not expect the adoption of this guidance to have a material impact on our Consolidated Financial Statements. In February 2015, the FASB issued new accounting guidance on consolidation. The new guidance changes the way an entity evaluates whether (1) it should consolidate limited partnerships and similar entities, (2) fees paid to a decision maker or service provider are variable interests in a variable interest entity (“VIE”), and (3) variable interests in a VIE held by related parties of an entity require the entity to consolidate the VIE. The guidance is effective for us in 2016. We do not expect the adoption of this guidance to have a material impact on our Consolidated Financial Statements. In April 2015, the FASB issued new accounting guidance on debt issuance costs. The new guidance requires debt issuance costs related to a recognized debt liability to be presented in the balance sheet as a direct deduction from the associated liability, consistent with debt discounts. We adopted this guidance effective as of September 2015. The impact of the adoption of this guidance is disclosed in Note 9 to the Consolidated Financial Statements. In May 2015, the FASB issued new accounting guidance on customer’s accounting for fees paid in a cloud computing arrangement. If a cloud computing arrangement includes a software license, the customer should account for the software license element of the arrangement consistent with the acquisition of other software licenses. If a cloud computing arrangement does not include a software license, the customer should account for the arrangement as a service contract. The guidance is effective for us in 2016. We do not expect the adoption of this guidance to have a material impact on our Consolidated Financial Statements. In September 2015, the FASB issued new accounting guidance on business combinations. The new guidance eliminates the requirement to restate prior period financial statements for measurement period adjustments following a business combination. It requires that the cumulative impact of a measurement period adjustment (including the impact on prior periods) be recognized in the reporting period in which the adjustment is identified. The prior period impact of the adjustment should be either presented separately on the face of the income statement or disclosed in the notes. The guidance is effective for us in 2016. We do not expect the adoption of this guidance to have a material impact on our Consolidated Financial Statements.