New Accounting Pronouncements	9 Months Ended
Sep. 30, 2011
Accounting Changes and Error Corrections [Text Block]	New Accounting Pronouncements In June 2011, the FASB issued guidance related to the presentation of Comprehensive Income. The new guidance gives an entity the option to present the total of comprehensive income, the components of net income, and the components of other comprehensive income either in a single continuous statement of comprehensive income or in two separate but consecutive statements. In both choices, an entity is required to present each component of net income along with total net income, each component of other comprehensive income along with a total for other comprehensive income, and a total amount for comprehensive income. The guidance eliminates the option to present the components of other comprehensive income as part of the statement of changes in stockholders’ equity. The guidance does not change the items that must be reported in other comprehensive income or when an item of other comprehensive income must be reclassified to net income. On October 21, the effective date for implementation of this guidance was deferred indefinitely by the FASB. Other than enhanced disclosure, adoption of this guidance will not have a material affect on the Company’s financial statements. In December 2009, the FASB issued new guidance related to the Consolidation of Variable Interest Entities (“VIE”). The new guidance focuses on “controlling financial interests” and requires companies to perform qualitative analysis to determine whether they must consolidate a VIE by assessing whether the variable interests give them controlling financial interests in the VIE. This guidance is effective for transfers occurring on or after November 15, 2009. Provisions must be applied in annual reporting periods beginning after November 15, 2009 and interim periods within that annual period. The adoption of the guidance did not have a material impact on the Company’s financial statements. Also, effective January 1, 2010, the Company adopted new guidance that indefinitely defers the above changes relating to the Company’s interests in entities that have all the attributes of an investment company or for which it is industry practice to apply measurement principles for financial reporting that are consistent with those applied by an investment company. As a result, the guidance discussed in the preceding paragraph did not apply to certain investment management trusts managed by Mercer. Mercer manages approximately $19 billion of assets in trusts or funds for which Mercer’s management or trustee fee is considered a variable interest. Mercer is not the primary beneficiary of these trusts or funds. Mercer’s only variable interest in any of these trusts or funds is its unpaid fees, if any. Mercer’s maximum exposure to loss of its interests is, therefore, limited to collection of its fees. In January 2011, the Company adopted guidance issued by the FASB on revenue recognition regarding multiple-deliverable revenue arrangements. The adoption of this new guidance did not have a material impact on the Company’s financial statements. In January 2011, the Company adopted guidance issued by the FASB which establishes a revenue recognition model for contingent consideration that is payable upon the achievement of an uncertain future event, referred to as a milestone. The scope of this guidance is limited to research or development arrangements and requires an entity to record the milestone payment in its entirety in the period received if the milestone meets all the necessary criteria to be considered substantive. However, entities would not be precluded from making an accounting policy election to apply another appropriate accounting policy that results in the deferral of some portion of the arrangement consideration. The adoption of this new guidance did not have a material impact on the Company’s financial statements. In May 2010, the FASB issued guidance for foreign currency issues and Venezuela’s highly inflationary status. The guidance states that Venezuela’s economy should be considered highly inflationary as of January 1, 2010 and therefore a U.S. dollar reporting entity must remeasure the financial statements of its Venezuelan subsidiaries as if the subsidiaries’ functional reporting currency were the entity’s reporting currency (i.e., the U.S. dollar). Any changes related to the conversion of non-U.S. dollar denominated balance sheet accounts must be recognized in earnings. The adoption of the guidance did not have a material impact on the Company’s financial statements.

New Accounting Pronouncements

9 Months Ended

Sep. 30, 2011

Accounting Changes and Error Corrections [Text Block]

New Accounting Pronouncements

In June 2011, the FASB issued guidance related to the presentation of Comprehensive Income. The new guidance gives an entity the option to present the total of comprehensive income, the components of net income, and the components of other comprehensive income either in a single continuous statement of comprehensive income or in two separate but consecutive statements. In both choices, an entity is required to present each component of net income along with total net income, each component of other comprehensive income along with a total for other comprehensive income, and a total amount for comprehensive income. The guidance eliminates the option to present the components of other comprehensive income as part of the statement of changes in stockholders’ equity. The guidance does not change the items that must be reported in other comprehensive income or when an item of other comprehensive income must be reclassified to net income.

On October 21, the effective date for implementation of this guidance was deferred indefinitely by the FASB. Other than enhanced disclosure, adoption of this guidance will not have a material affect on the Company’s financial statements.

In December 2009, the FASB issued new guidance related to the Consolidation of Variable Interest Entities (“VIE”). The new guidance focuses on “controlling financial interests” and requires companies to perform qualitative analysis to determine whether they must consolidate a VIE by assessing whether the variable interests give them controlling financial interests in the VIE. This guidance is effective for transfers occurring on or after November 15, 2009. Provisions must be applied in annual reporting periods beginning after November 15, 2009 and interim periods within that annual period. The adoption of the guidance did not have a material impact on the Company’s financial statements.

Also, effective January 1, 2010, the Company adopted new guidance that indefinitely defers the above changes relating to the Company’s interests in entities that have all the attributes of an investment company or for which it is industry practice to apply measurement principles for financial reporting that are consistent with those applied by an investment company. As a result, the guidance discussed in the preceding paragraph did not apply to certain investment management trusts managed by Mercer. Mercer manages approximately $19 billion of assets in trusts or funds for which Mercer’s management or trustee fee is considered a variable interest. Mercer is not the primary beneficiary of these trusts or funds. Mercer’s only variable interest in any of these trusts or funds is its unpaid fees, if any. Mercer’s maximum exposure to loss of its interests is, therefore, limited to collection of its fees.

In January 2011, the Company adopted guidance issued by the FASB on revenue recognition regarding multiple-deliverable revenue arrangements. The adoption of this new guidance did not have a material impact on the Company’s financial statements.

In January 2011, the Company adopted guidance issued by the FASB which establishes a revenue recognition model for contingent consideration that is payable upon the achievement of an uncertain future event, referred to as a milestone. The scope of this guidance is limited to research or development arrangements and requires an entity to record the milestone payment in its entirety in the period received if the milestone meets all the necessary criteria to be considered substantive. However, entities would not be precluded from making an accounting policy election to apply another appropriate accounting policy that results in the deferral of some portion of the arrangement consideration. The adoption of this new guidance did not have a material impact on the Company’s financial statements.

In May 2010, the FASB issued guidance for foreign currency issues and Venezuela’s highly inflationary status. The guidance states that Venezuela’s economy should be considered highly inflationary as of January 1, 2010 and therefore a U.S. dollar reporting entity must remeasure the financial statements of its Venezuelan subsidiaries as if the subsidiaries’ functional reporting currency were the entity’s reporting currency (i.e., the U.S. dollar). Any changes related to the conversion of non-U.S. dollar denominated balance sheet accounts must be recognized in earnings. The adoption of the guidance did not have a material impact on the Company’s financial statements.

- Definition

The entire disclosure for reporting accounting changes and error corrections. It includes the conveyance of information necessary for a user of the Company's financial information to understand all aspects and required disclosure information concerning all changes and error corrections reported in the Company's financial statements for the period.

+ References+ Details