Changes in Accounting Principles	12 Months Ended
Dec. 31, 2011
Changes in Accounting Principles	Note 2—Changes in Accounting Principles Comprehensive Income Effective December 31, 2011, we early adopted Financial Accounting Standards Board (FASB) Accounting Standards Update (ASU) No. 2011-05, “Presentation of Comprehensive Income.” This ASU amends FASB Accounting Standards Codification (ASC) Topic 220, “Comprehensive Income,” by requiring a more prominent presentation of the components of other comprehensive income. We elected the two-statement approach presenting other comprehensive income in a separate statement immediately following the income statement. On December 23, 2011, the FASB issued ASU 2011-12, “Deferral of the Effective Date for Amendments to the Presentation of Reclassifications of Items Out of Accumulated Other Comprehensive Income in ASU No. 2011-05.” ASU 2011-12 defers the ASU 2011-05 requirement to present items reclassified into net income from other comprehensive income. This deferral only impacted the presentation requirement on the consolidated income statement.

Changes in Accounting Principles

12 Months Ended

Dec. 31, 2011

Note 2—Changes in Accounting Principles

Comprehensive Income

Effective December 31, 2011, we early adopted Financial Accounting Standards Board (FASB) Accounting Standards Update (ASU) No. 2011-05, “Presentation of Comprehensive Income.” This ASU amends FASB Accounting Standards Codification (ASC) Topic 220, “Comprehensive Income,” by requiring a more prominent presentation of the components of other comprehensive income. We elected the two-statement approach presenting other comprehensive income in a separate statement immediately following the income statement. On December 23, 2011, the FASB issued ASU 2011-12, “Deferral of the Effective Date for Amendments to the Presentation of Reclassifications of Items Out of Accumulated Other Comprehensive Income in ASU No. 2011-05.” ASU 2011-12 defers the ASU 2011-05 requirement to present items reclassified into net income from other comprehensive income. This deferral only impacted the presentation requirement on the consolidated income statement.