New Accounting Pronouncements Adopted (Policies)	9 Months Ended
Sep. 30, 2013
New Accounting Pronouncements Adopted [Abstract]
Derivatives and Hedging	In July 2013, the FASB issued an amendment to permit an entity to designate the Fed Funds Effective Swap Rate, also referred to as the overnight index swap rate (“OIS”), as a benchmark interest rate. The OIS will be included as a U.S. benchmark interest rate for hedge accounting purposes. Prior to this amendment, only interest rates on direct treasury obligations of the U.S. government and the London Interbank Offered Rate (“LIBOR”) swap rate were considered benchmark interest rates. In addition, the amendment removes the restriction on using different benchmark rates for similar hedges. This amendment can be applied on a prospective basis for qualifying new or redesignated hedging relationships entered into on or after July 17, 2013. The Corporation adopted the accounting standard during the third quarter of 2013, as required, with no material impact on its results of operations, financial position, or liquidity.
Comprehensive Income	In February 2013, the FASB issued an amendment requiring an entity to provide information about the amounts reclassified out of accumulated other comprehensive income by component. These disclosures may be presented on the face of the income statement or in the notes to consolidated financial statements, depending upon the specific accounting guidance for the reclassification out of accumulated other comprehensive income. The amendments are effective prospectively for reporting periods beginning after December 15, 2012 with early adoption permitted. The Corporation adopted the accounting standard during the first quarter of 2013, as required, with no material impact on its results of operations, financial position, or liquidity. See Note 16 for the required new disclosures on accumulated other comprehensive income.
Other Intangibles	In July 2012, the FASB issued amendments intended to simplify how entities test the decline in the realizable value (impairment) of indefinite-lived intangible assets other than goodwill. The amendments permit an organization to make a qualitative evaluation about the likelihood of impairment of an indefinite-lived intangible asset to determine whether it should apply the quantitative test and calculate the fair value of the indefinite-lived intangible asset. The amendments do not change how an organization measures an impairment loss. Therefore, it is not expected to affect the information reported to users of the financial statements. The amendments are effective for annual and interim impairment tests performed for fiscal years beginning after September 15, 2012. The Corporation adopted the accounting standard during the first quarter of 2013, as required, with no material impact on its results of operations, financial position, or liquidity.
Balance Sheet - Disclosures about Offsetting Assets and Liabilities	In December 2011, the FASB issued amendments to require an entity to disclose information about offsetting and related arrangements to enable users of its financial statements to understand the effect of those arrangements on its financial position. This information will enable users of an entity's financial statements to evaluate the effect or potential effect of netting arrangements with certain financial instruments and derivative instruments. The amendments are effective for annual reporting periods beginning on or after January 1, 2013, with retrospective application to the disclosures of all comparative periods presented. The Corporation adopted the accounting standard during the first quarter of 2013, as required, with no material impact on its results of operations, financial position, or liquidity. See Note 11 for the required new disclosures on balance sheet offsetting.
Goodwill Impairment	In September 2011, the FASB issued amendments intended to simplify how entities test goodwill for impairment. The amendments permit an entity to first assess qualitative factors to determine whether it is more likely than not that the fair value of a reporting unit is less than its carrying amount as a basis for determining whether it is necessary to perform the two-step goodwill impairment test. Under the guidance, an entity is not required to calculate the fair value of a reporting unit unless the entity determines that it is more likely than not that its fair value is less than its carrying value. The amendments are effective for interim and annual periods beginning after December 15, 2011, with early adoption permitted. The Corporation adopted the accounting standard as of January 1, 2012, as required, with no material impact on its results of operations, financial position, or liquidity. See Note 7 for required disclosures on goodwill.

New Accounting Pronouncements Adopted [Abstract]

In February 2013, the FASB issued an amendment requiring an entity to provide information about the amounts reclassified out of accumulated other comprehensive income by component. These disclosures may be presented on the face of the income statement or in the notes to consolidated financial statements, depending upon the specific accounting guidance for the reclassification out of accumulated other comprehensive income. The amendments are effective prospectively for reporting periods beginning after December 15, 2012 with early adoption permitted. The Corporation adopted the accounting standard during the first quarter of 2013, as required, with no material impact on its results of operations, financial position, or liquidity. See Note 16 for the required new disclosures on accumulated other comprehensive income.

Balance Sheet - Disclosures about Offsetting Assets and Liabilities

In December 2011, the FASB issued amendments to require an entity to disclose information about offsetting and related arrangements to enable users of its financial statements to understand the effect of those arrangements on its financial position. This information will enable users of an entity's financial statements to evaluate the effect or potential effect of netting arrangements with certain financial instruments and derivative instruments. The amendments are effective for annual reporting periods beginning on or after January 1, 2013, with retrospective application to the disclosures of all comparative periods presented. The Corporation adopted the accounting standard during the first quarter of 2013, as required, with no material impact on its results of operations, financial position, or liquidity. See Note 11 for the required new disclosures on balance sheet offsetting.