Accounting Policies	6 Months Ended
Jun. 30, 2012
Accounting Policies [Abstract]
Accounting Policies	ACCOUNTING POLICIES Corporate Information Invesco Ltd. (Parent) and all of its consolidated entities (collectively, the company or Invesco) provide retail, institutional and high-net-worth clients with an array of global investment management capabilities. The company’s sole business is investment management. Basis of Accounting and Consolidation In the opinion of management, the unaudited Condensed Consolidated Financial Statements reflect all adjustments, consisting of normal recurring accruals, which are necessary for the fair presentation of the financial condition and results of operations for the interim periods presented. All significant intercompany transactions, balances, revenues and expenses are eliminated upon consolidation. The Condensed Consolidated Financial Statements have been prepared in accordance with U.S. GAAP and consolidate the financial statements of the Parent, all of its controlled subsidiaries, any variable interest entities (VIEs) required to be consolidated, and any non-VIE general partnership investments where the company is deemed to have control. Control is deemed to be present when the Parent, directly or indirectly, holds a majority voting interest or otherwise has the power to govern the financial and operating policies of the subsidiary so as to obtain the benefits from its activities. Certain disclosures included in the company’s annual report are not required to be included on an interim basis in the company’s quarterly reports on Forms 10-Q. The company has condensed or omitted these disclosures. Therefore, this Form 10-Q (Report) should be read in conjunction with the company’s annual report on Form 10-K for the year ended December 31, 2011, which was filed with the U.S. Securities and Exchange Commission on February 24, 2012. Use of Estimates In preparing the financial statements, company management is required to make estimates and assumptions that affect reported revenues, expenses, assets, liabilities and disclosure of contingent liabilities. The primary estimates relate to investment valuation, goodwill and intangible impairment, and taxes. Use of available information and application of judgment are inherent in the formation of estimates. Actual results in the future could differ from such estimates and the differences may be material to the financial statements. Accounting Pronouncements Recently Adopted and Pending Accounting Pronouncements In May 2011, the FASB issued Accounting Standards Update 2011-04, “Fair Value Measurements: Amendments to Achieve Common Fair Value Measurement and Disclosure Requirements” (ASU 2011-04). ASU 2011-04 amends Topic 820 to clarify existing fair value measurement disclosures to (1) specifically provide quantitative information about the significant unobservable inputs used for all level 3 measurements and (2) disclose any transfers between levels 1 and 2 of the fair value hierarchy, not just significant transfers. ASU 2011-04 also requires a number of additional disclosures regarding fair value measurements. Specifically, ASU 2011-04 requires entities to disclose: (1) a qualitative discussion about the sensitivity of recurring level 3 measurements to changes in the unobservable inputs disclosed, including the interrelationship between inputs; (2) a description of the company’s valuation processes surrounding level 3 measurements; (3) information about when the current use of a non-financial asset measured at fair value differs from its highest and best use; and (4) the hierarchy classification for items whose fair value is not recorded on the balance sheet but is disclosed in the notes. ASU 2011-04 amends Topic 820 to change the fair value measurement of financial instruments and the application of premiums and discounts in a fair value measurement. ASU 2011-04 also clarifies existing fair value measurement regarding the concepts of valuation premise, the application of the highest and best use, and the fair value measurement of an instrument classified in an entity’s shareholders’ equity. The adoption of ASU 2011-04 did not have an effect on the company’s current fair value measurements but led to increased disclosures related to the assets and liabilities of the company's consolidated investment products that are classified as level 3 assets within the fair value hierarchy. The amendments to Topic 820 made by ASU 2011-04 are effective for interim and annual periods beginning on or after December 15, 2011, and are accordingly reflected in the fair value disclosure contained in Notes 2, "Fair Value of Assets and Liabilities," and 11, "Consolidated Investment Products." In June 2011, the FASB issued Accounting Standards Update 2011-05, “Comprehensive Income: Presentation of Comprehensive Income” (ASU 2011-05). ASU 2011-05 amends Topic 220 to require the components of net income and other comprehensive income to be presented in one continuous statement, which would be referred to as the statement of comprehensive income, or in two separate but consecutive statements. Prior to ASU 2011-05, there was no requirement to present the statement of net income and statement of comprehensive income consecutively. ASU 2011-05 also requires an entity to present on the face of the financial statements reclassification adjustments for items that are reclassified from other comprehensive income to net income alongside their respective components of net income and other comprehensive income. This requirement in ASU 2011-05 was amended and deferred in December 2011, when the FASB issued Accounting Standards Update No. 2011-12, “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” (ASU 2011-12). As a result of ASU 2011-12, an entity will continue to report items that are reclassified from accumulated other comprehensive income consistent with the requirements in Topic 220 in effect before the adoption of ASU 2011-05. The amendments to Topic 220 made by ASU 2011-05, and the amendments to ASU 2011-05 made by ASU 2011-12, are effective for interim and annual periods beginning on or after December 15, 2011 for public companies, and are accordingly reflected in the new financial statement, “Condensed Consolidated Statements of Comprehensive Income." In September 2011, the FASB issued Accounting Standards Update 2011-08, “Intangibles-Goodwill and Other: Testing Goodwill for Impairment” (ASU 2011-08). ASU 2011-08 amends Topic 350 on testing for goodwill impairment. Specifically, ASU 2011-08 permits an entity the option to first qualitatively assess whether it is more likely than not (a likelihood of more than 50 percent) that the fair value of a reporting unit is less than its carrying amount. If an entity concludes that this is the case, it would be required to calculate the fair value of the reporting unit under step one of the goodwill impairment test; otherwise, no further testing is required. An entity may bypass the qualitative assessment in any period and proceed directly to step one of the goodwill impairment test, and may resume performing the qualitative assessment in any subsequent period. The amendments made by ASU 2011-08 have been adopted by the company and are effective for interim and annual periods beginning on or after December 15, 2011. They will be contemplated as part of the company's 2012 impairment testing process.

ACCOUNTING POLICIES

Corporate Information

Invesco Ltd. (Parent) and all of its consolidated entities (collectively, the company or Invesco) provide retail, institutional and high-net-worth clients with an array of global investment management capabilities. The company’s sole business is investment management.

Basis of Accounting and Consolidation

In the opinion of management, the unaudited Condensed Consolidated Financial Statements reflect all adjustments, consisting of normal recurring accruals, which are necessary for the fair presentation of the financial condition and results of operations for the interim periods presented. All significant intercompany transactions, balances, revenues and expenses are eliminated upon consolidation.

The Condensed Consolidated Financial Statements have been prepared in accordance with U.S. GAAP and consolidate the financial statements of the Parent, all of its controlled subsidiaries, any variable interest entities (VIEs) required to be consolidated, and any non-VIE general partnership investments where the company is deemed to have control. Control is deemed to be present when the Parent, directly or indirectly, holds a majority voting interest or otherwise has the power to govern the financial and operating policies of the subsidiary so as to obtain the benefits from its activities.

Certain disclosures included in the company’s annual report are not required to be included on an interim basis in the company’s quarterly reports on Forms 10-Q. The company has condensed or omitted these disclosures. Therefore, this Form 10-Q (Report) should be read in conjunction with the company’s annual report on Form 10-K for the year ended December 31, 2011, which was filed with the U.S. Securities and Exchange Commission on February 24, 2012.

Use of Estimates

In preparing the financial statements, company management is required to make estimates and assumptions that affect reported revenues, expenses, assets, liabilities and disclosure of contingent liabilities. The primary estimates relate to investment valuation, goodwill and intangible impairment, and taxes. Use of available information and application of judgment are inherent in the formation of estimates. Actual results in the future could differ from such estimates and the differences may be material to the financial statements.

Accounting Pronouncements Recently Adopted and Pending Accounting Pronouncements

In May 2011, the FASB issued Accounting Standards Update 2011-04, “Fair Value Measurements: Amendments to Achieve Common Fair Value Measurement and Disclosure Requirements” (ASU 2011-04). ASU 2011-04 amends Topic 820 to clarify existing fair value measurement disclosures to (1) specifically provide quantitative information about the significant unobservable inputs used for all level 3 measurements and (2) disclose any transfers between levels 1 and 2 of the fair value hierarchy, not just significant transfers. ASU 2011-04 also requires a number of additional disclosures regarding fair value measurements. Specifically, ASU 2011-04 requires entities to disclose: (1) a qualitative discussion about the sensitivity of recurring level 3 measurements to changes in the unobservable inputs disclosed, including the interrelationship between inputs; (2) a description of the company’s valuation processes surrounding level 3 measurements; (3) information about when the current use of a non-financial asset measured at fair value differs from its highest and best use; and (4) the hierarchy classification for items whose fair value is not recorded on the balance sheet but is disclosed in the notes. ASU 2011-04 amends Topic 820 to change the fair value measurement of financial instruments and the application of premiums and discounts in a fair value measurement. ASU 2011-04 also clarifies existing fair value measurement regarding the concepts of valuation premise, the application of the highest and best use, and the fair value measurement of an instrument classified in an entity’s shareholders’ equity. The adoption of ASU 2011-04 did not have an effect on the company’s current fair value measurements but led to increased disclosures related to the assets and liabilities of the company's consolidated investment products that are classified as level 3 assets within the fair value hierarchy. The amendments to Topic 820 made by ASU 2011-04 are effective for interim and annual periods beginning on or after December 15, 2011, and are accordingly reflected in the fair value disclosure contained in Notes 2, "Fair Value of Assets and Liabilities," and 11, "Consolidated Investment Products."

In June 2011, the FASB issued Accounting Standards Update 2011-05, “Comprehensive Income: Presentation of Comprehensive Income” (ASU 2011-05). ASU 2011-05 amends Topic 220 to require the components of net income and other comprehensive income to be presented in one continuous statement, which would be referred to as the statement of comprehensive income, or in two separate but consecutive statements. Prior to ASU 2011-05, there was no requirement to present the statement of net income and statement of comprehensive income consecutively. ASU 2011-05 also requires an entity to present on the face of the financial statements reclassification adjustments for items that are reclassified from other comprehensive income to net income alongside their respective components of net income and other comprehensive income. This requirement in ASU 2011-05 was amended and deferred in December 2011, when the FASB issued Accounting Standards Update No. 2011-12, “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” (ASU 2011-12). As a result of ASU 2011-12, an entity will continue to report items that are reclassified from accumulated other comprehensive income consistent with the requirements in Topic 220 in effect before the adoption of ASU 2011-05. The amendments to Topic 220 made by ASU 2011-05, and the amendments to ASU 2011-05 made by ASU 2011-12, are effective for interim and annual periods beginning on or after December 15, 2011 for public companies, and are accordingly reflected in the new financial statement, “Condensed Consolidated Statements of Comprehensive Income."

In September 2011, the FASB issued Accounting Standards Update 2011-08, “Intangibles-Goodwill and Other: Testing Goodwill for Impairment” (ASU 2011-08). ASU 2011-08 amends Topic 350 on testing for goodwill impairment. Specifically, ASU 2011-08 permits an entity the option to first qualitatively assess whether it is more likely than not (a likelihood of more than 50 percent) that the fair value of a reporting unit is less than its carrying amount. If an entity concludes that this is the case, it would be required to calculate the fair value of the reporting unit under step one of the goodwill impairment test; otherwise, no further testing is required. An entity may bypass the qualitative assessment in any period and proceed directly to step one of the goodwill impairment test, and may resume performing the qualitative assessment in any subsequent period. The amendments made by ASU 2011-08 have been adopted by the company and are effective for interim and annual periods beginning on or after December 15, 2011. They will be contemplated as part of the company's 2012 impairment testing process.