Basis of Presentation (Policies)	6 Months Ended
Jun. 30, 2015
Accounting Policies [Abstract]
New Accounting Pronouncements	New Accounting Pronouncements: In April 2014, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) 2014-08, Reporting Discontinued Operations and Disclosures of Disposals of Components of an Entity. The ASU amends the criteria for reporting discontinued operations to include only disposals representing a strategic shift in operations. The ASU also requires expanded disclosures regarding the assets, liabilities, income, and expenses of discontinued operations. This ASU became effective for the Corporation in the first quarter of 2015 and did not have a significant impact on its consolidated financial statements. In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers, as a new Accounting Standards Codification (ASC) Topic ASC 606. This ASU is effective for the Corporation beginning in the first quarter of 2018, with early adoption permitted from the first quarter of 2017. The Corporation is currently assessing the impact of the ASU on its consolidated financial statements. In February 2015, the FASB issued ASU 2015-02, Amendments to the Consolidation Analysis, which makes changes to both the variable interest model and the voting model, affecting all reporting entities involved with limited partnerships or similar entities. This ASU is effective for the Corporation beginning in the first quarter of 2016, with early adoption permitted. The Corporation is currently assessing the impact of the ASU on its consolidated financial statements. In April 2015, the FASB issued ASU 2015-03, Simplifying the Presentation of Debt Issuance Costs, which requires debt issuance costs to be presented in the balance sheet as a direct deduction from the associated debt liability. This ASU is effective for the Corporation beginning in the first quarter of 2016, with early adoption permitted. The Corporation does not expect that the ASU will have a material impact to its consolidated financial statements.

New Accounting Pronouncements: In April 2014, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) 2014-08, Reporting Discontinued Operations and Disclosures of Disposals of Components of an Entity. The ASU amends the criteria for reporting discontinued operations to include only disposals representing a strategic shift in operations. The ASU also requires expanded disclosures regarding the assets, liabilities, income, and expenses of discontinued operations. This ASU became effective for the Corporation in the first quarter of 2015 and did not have a significant impact on its consolidated financial statements.

In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers, as a new Accounting Standards Codification (ASC) Topic ASC 606. This ASU is effective for the Corporation beginning in the first quarter of 2018, with early adoption permitted from the first quarter of 2017. The Corporation is currently assessing the impact of the ASU on its consolidated financial statements.

In February 2015, the FASB issued ASU 2015-02, Amendments to the Consolidation Analysis, which makes changes to both the variable interest model and the voting model, affecting all reporting entities involved with limited partnerships or similar entities. This ASU is effective for the Corporation beginning in the first quarter of 2016, with early adoption permitted. The Corporation is currently assessing the impact of the ASU on its consolidated financial statements.

In April 2015, the FASB issued ASU 2015-03, Simplifying the Presentation of Debt Issuance Costs, which requires debt issuance costs to be presented in the balance sheet as a direct deduction from the associated debt liability. This ASU is effective for the Corporation beginning in the first quarter of 2016, with early adoption permitted. The Corporation does not expect that the ASU will have a material impact to its consolidated financial statements.