New Accounting Pronouncements (Policies)	6 Months Ended
Jun. 30, 2014
Accounting Policies [Abstract]
New Accounting Pronouncements Adopted	Unrecognized Tax Benefits In July 2013, the Financial Accounting Standards Board ("FASB") issued an Accounting Standards Update ("ASU") that provides guidance on financial statement presentation of an unrecognized tax benefit when a net operating loss (“NOL”) carryforward, a similar tax loss, or a tax credit carryforward exists in the same tax jurisdiction. The ASU requires an entity to present the unrecognized tax benefit as a reduction of the deferred tax asset for an NOL or tax credit carryforward whenever the NOL or tax credit carryforward would be available to reduce the additional taxable income or tax due if the tax position is disallowed. However, the ASU requires an entity to present an unrecognized tax benefit on the balance sheet as a liability if certain conditions are met. The new guidance is effective for all annual and interim periods beginning January 1, 2014. The adoption of this guidance did not have an impact on our unrecognized tax benefit liability. Accounting for Investments in Qualified Housing Projects In January 2014, the FASB issued an ASU which permits, but does not require, an investor to amortize its Low Income Housing Tax Credit ("LIHTC") investments in proportion to the allocated Low Income Housing Federal tax benefits and present such tax benefits net of investment amortization in the income tax line. The ASU is effective for fiscal years beginning after December 15, 2014 to be applied retrospectively with early adoption permitted. We elected to early adopt the ASU on January 1, 2014 due to its improvement in the presentation of the economic benefits of this investment class. The early adoption of the ASU required the previous period to also be restated and resulted in a reduction to operating expenses of $21 million and $42 million in both of the three and six months ended June 30, 2014 and 2013, respectively, with a corresponding increase to income tax expense. There was no overall impact to net income. Reporting Discontinued Operations and Disclosures of Disposals of Components of an Entity In April 2014, the FASB issued an ASU which changes the criteria for determining whether a disposition qualifies for discontinued operations presentation and requires enhanced disclosures about discontinued operations and significant dispositions that do not qualify for discontinued operations reporting. Under the ASU, only disposals representing a strategic shift in operations, such as a disposal of a major geographic area, a major line of business, a major equity method investment or other major parts of an entity, are required to be presented as discontinued operations. The ASU will be effective prospectively for all disposals (or classifications as held for sale) of components of an entity that occur within annual and interim periods beginning January 1, 2015. Early adoption is permitted, but only for disposals (or classifications as held for sale) that have not been reported in financial statements previously issued or available for issuance. The adoption of this guidance is not expected to have a significant impact on our financial position or results of operations. Recognition of Revenue from Contracts with Customers In May 2014, the FASB issued an ASU which provides a principles-based framework for revenue recognition that supersedes virtually all previously issued revenue recognition guidance. Additionally, the ASU requires improved disclosures to help users of financial statements better understand the nature, amount, timing, and uncertainty of revenue that is recognized. The core principle of the five-step revenue recognition framework 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 ASU will be effective for all annual and interim periods beginning January 1, 2017. The amendments in the ASU should be applied either retrospectively to each prior reporting period presented or retrospectively with the cumulative effect of initially applying this ASU recognized at the date of initial application. We are currently evaluating the potential impact of adopting this ASU, including determining which transition method to apply. Repurchase to Maturity Transactions, Repurchase Financings, and Disclosures In June 2014, the FASB issued an ASU which changes the accounting for repurchase-to-maturity transactions to secured borrowing accounting and requires secured borrowing accounting for the repurchase agreement in a contemporaneous repurchase financing arrangement. The accounting changes in the ASU will be effective for all annual and interim periods beginning January 1, 2015 and will require the changes in accounting for transactions outstanding on the effective date to be presented as a cumulative-effect adjustment to retained earnings as of the beginning of the period of adoption. The ASU also requires new disclosure about certain transactions accounted for as a sale to be presented for interim and annual periods beginning January 1, 2015, and new disclosure about repurchase agreements, securities lending transactions, and repurchase-to-maturity transactions that are accounted for as secured borrowings to be presented for annual periods beginning January 1, 2015, and for interim periods beginning April 1, 2015. We are currently evaluating the potential impact the adoption of this ASU may have on our financial position and results of operations.

Unrecognized Tax Benefits In July 2013, the Financial Accounting Standards Board ("FASB") issued an Accounting Standards Update ("ASU") that provides guidance on financial statement presentation of an unrecognized tax benefit when a net operating loss (“NOL”) carryforward, a similar tax loss, or a tax credit carryforward exists in the same tax jurisdiction. The ASU requires an entity to present the unrecognized tax benefit as a reduction of the deferred tax asset for an NOL or tax credit carryforward whenever the NOL or tax credit carryforward would be available to reduce the additional taxable income or tax due if the tax position is disallowed. However, the ASU requires an entity to present an unrecognized tax benefit on the balance sheet as a liability if certain conditions are met. The new guidance is effective for all annual and interim periods beginning January 1, 2014. The adoption of this guidance did not have an impact on our unrecognized tax benefit liability.

Accounting for Investments in Qualified Housing Projects In January 2014, the FASB issued an ASU which permits, but does not require, an investor to amortize its Low Income Housing Tax Credit ("LIHTC") investments in proportion to the allocated Low Income Housing Federal tax benefits and present such tax benefits net of investment amortization in the income tax line. The ASU is effective for fiscal years beginning after December 15, 2014 to be applied retrospectively with early adoption permitted. We elected to early adopt the ASU on January 1, 2014 due to its improvement in the presentation of the economic benefits of this investment class. The early adoption of the ASU required the previous period to also be restated and resulted in a reduction to operating expenses of $21 million and $42 million in both of the three and six months ended June 30, 2014 and 2013, respectively, with a corresponding increase to income tax expense. There was no overall impact to net income.

Reporting Discontinued Operations and Disclosures of Disposals of Components of an Entity In April 2014, the FASB issued an ASU which changes the criteria for determining whether a disposition qualifies for discontinued operations presentation and requires enhanced disclosures about discontinued operations and significant dispositions that do not qualify for discontinued operations reporting. Under the ASU, only disposals representing a strategic shift in operations, such as a disposal of a major geographic area, a major line of business, a major equity method investment or other major parts of an entity, are required to be presented as discontinued operations. The ASU will be effective prospectively for all disposals (or classifications as held for sale) of components of an entity that occur within annual and interim periods beginning January 1, 2015. Early adoption is permitted, but only for disposals (or classifications as held for sale) that have not been reported in financial statements previously issued or available for issuance. The adoption of this guidance is not expected to have a significant impact on our financial position or results of operations.

Recognition of Revenue from Contracts with Customers In May 2014, the FASB issued an ASU which provides a principles-based framework for revenue recognition that supersedes virtually all previously issued revenue recognition guidance. Additionally, the ASU requires improved disclosures to help users of financial statements better understand the nature, amount, timing, and uncertainty of revenue that is recognized. The core principle of the five-step revenue recognition framework 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 ASU will be effective for all annual and interim periods beginning January 1, 2017. The amendments in the ASU should be applied either retrospectively to each prior reporting period presented or retrospectively with the cumulative effect of initially applying this ASU recognized at the date of initial application. We are currently evaluating the potential impact of adopting this ASU, including determining which transition method to apply.

Repurchase to Maturity Transactions, Repurchase Financings, and Disclosures In June 2014, the FASB issued an ASU which changes the accounting for repurchase-to-maturity transactions to secured borrowing accounting and requires secured borrowing accounting for the repurchase agreement in a contemporaneous repurchase financing arrangement. The accounting changes in the ASU will be effective for all annual and interim periods beginning January 1, 2015 and will require the changes in accounting for transactions outstanding on the effective date to be presented as a cumulative-effect adjustment to retained earnings as of the beginning of the period of adoption. The ASU also requires new disclosure about certain transactions accounted for as a sale to be presented for interim and annual periods beginning January 1, 2015, and new disclosure about repurchase agreements, securities lending transactions, and repurchase-to-maturity transactions that are accounted for as secured borrowings to be presented for annual periods beginning January 1, 2015, and for interim periods beginning April 1, 2015. We are currently evaluating the potential impact the adoption of this ASU may have on our financial position and results of operations.