Recent Accounting Guidance	3 Months Ended
Mar. 31, 2012
Recent Accounting Guidance [Abstract]
Recent Accounting Guidance [Text Block]	RECENT ACCOUNTING GUIDANCE Recently Adopted Accounting Guidance On January 1, 2012, the Corporation adopted Accounting Standards Update ("ASU") 2011-05, "Comprehensive Income (Topic 220): Presentation of Comprehensive Income," as amended by ASU 2011-12, "Comprehensive Income (Topic 220): Deferral of the Effective Date for Amendments to the Presentation of Reclassifications of Items Out of Accumulated Other Comprehensive Income in Accounting Standards Update No. 2011-05." This standard improves the comparability, consistency and transparency of financial reporting and increases the prominence of items reported in other comprehensive income. See the Consolidated Statements of Comprehensive Income and Note L. On January 1, 2012, the Corporation adopted ASU 2011-04, "Fair Value Measurement (Topic 820): Amendments to Achieve Common Fair Value Measurement and Disclosure Requirements in U.S. GAAP and IFRS." which provides common requirements for measuring fair value and disclosing information about fair value measurements in accordance with U.S. GAAP and International Financial Reporting Standards ("IFRS"). See Note G for additional information about fair value measurements. Accounting Guidance Issued But Not Adopted as of March 31, 2012 In December 2011, the Financial Accounting Standards Board ("FASB") issued ASU 2011-11, "Balance Sheet (Topic 210): Disclosures about Offsetting Assets and Liabilities," which requires entities to disclose both gross and net information about both instruments and transactions eligible for offset in the statement of financial position and instruments and transactions subject to an agreement similar to a master netting agreement. The objective of the disclosure is to facilitate comparison between those entities that prepare their financial statements on the basis of U.S. GAAP and those entities that prepare their financial statements on the basis of IFRS. This ASU is effective for fiscal years, and interim periods within those years, beginning on or after January 1, 2013. Retrospective presentation for all comparative periods presented is required. The Corporation is currently evaluating the impact of adopting this guidance.

RECENT ACCOUNTING GUIDANCE

Recently Adopted Accounting Guidance

On January 1, 2012, the Corporation adopted Accounting Standards Update ("ASU") 2011-05, "Comprehensive Income (Topic 220): Presentation of Comprehensive Income," as amended by ASU 2011-12, "Comprehensive Income (Topic 220): Deferral of the Effective Date for Amendments to the Presentation of Reclassifications of Items Out of Accumulated Other Comprehensive Income in Accounting Standards Update No. 2011-05." This standard improves the comparability, consistency and transparency of financial reporting and increases the prominence of items reported in other comprehensive income. See the Consolidated Statements of Comprehensive Income and Note L.

On January 1, 2012, the Corporation adopted ASU 2011-04, "Fair Value Measurement (Topic 820): Amendments to Achieve Common Fair Value Measurement and Disclosure Requirements in U.S. GAAP and IFRS." which provides common requirements for measuring fair value and disclosing information about fair value measurements in accordance with U.S. GAAP and International Financial Reporting Standards ("IFRS"). See Note G for additional information about fair value measurements.

Accounting Guidance Issued But Not Adopted as of March 31, 2012

In December 2011, the Financial Accounting Standards Board ("FASB") issued ASU 2011-11, "Balance Sheet (Topic 210): Disclosures about Offsetting Assets and Liabilities," which requires entities to disclose both gross and net information about both instruments and transactions eligible for offset in the statement of financial position and instruments and transactions subject to an agreement similar to a master netting agreement. The objective of the disclosure is to facilitate comparison between those entities that prepare their financial statements on the basis of U.S. GAAP and those entities that prepare their financial statements on the basis of IFRS. This ASU is effective for fiscal years, and interim periods within those years, beginning on or after January 1, 2013. Retrospective presentation for all comparative periods presented is required. The Corporation is currently evaluating the impact of adopting this guidance.