XML 154 R58.htm IDEA: XBRL DOCUMENT v2.4.1.9
Investments (Details Of Company Investments, Current) (Details) (USD $)
In Millions, unless otherwise specified
Dec. 31, 2014
Dec. 31, 2013
Investment Holdings [Line Items]    
Available for sale investments $ 255.9us-gaap_AvailableForSaleSecurities $ 244.1us-gaap_AvailableForSaleSecurities
Equity method investments 332.1us-gaap_EquityMethodInvestments 308.2us-gaap_EquityMethodInvestments
Foreign time deposits 29.6ivz_ForeignTimeDeposits 28.8ivz_ForeignTimeDeposits
Cost Method Investments 4.6us-gaap_CostMethodInvestments 5.6us-gaap_CostMethodInvestments
Investments 885.4us-gaap_Investments 839.7us-gaap_Investments
Seed Money [Member]    
Investment Holdings [Line Items]    
Available for sale investments 246.2us-gaap_AvailableForSaleSecurities
/ us-gaap_InvestmentTypeAxis
= ivz_SeedMoneyMember
233.8us-gaap_AvailableForSaleSecurities
/ us-gaap_InvestmentTypeAxis
= ivz_SeedMoneyMember
Trading investments 68.2us-gaap_TradingSecurities
/ us-gaap_InvestmentTypeAxis
= ivz_SeedMoneyMember
0us-gaap_TradingSecurities
/ us-gaap_InvestmentTypeAxis
= ivz_SeedMoneyMember
Collateralized Loan Obligations [Member]    
Investment Holdings [Line Items]    
Available for sale investments 3.4us-gaap_AvailableForSaleSecurities
/ us-gaap_InvestmentTypeAxis
= us-gaap_CollateralizedLoanObligationsMember
4.0us-gaap_AvailableForSaleSecurities
/ us-gaap_InvestmentTypeAxis
= us-gaap_CollateralizedLoanObligationsMember
Other Debt Obligations [Member]    
Investment Holdings [Line Items]    
Available for sale investments 6.3us-gaap_AvailableForSaleSecurities
/ us-gaap_InvestmentTypeAxis
= us-gaap_OtherDebtSecuritiesMember
6.3us-gaap_AvailableForSaleSecurities
/ us-gaap_InvestmentTypeAxis
= us-gaap_OtherDebtSecuritiesMember
Deferred Compensation Arrangements [Member]    
Investment Holdings [Line Items]    
Trading investments 162.6us-gaap_TradingSecurities
/ us-gaap_InvestmentTypeAxis
= ivz_DeferredCompensationArrangementsMember
249.7us-gaap_TradingSecurities
/ us-gaap_InvestmentTypeAxis
= ivz_DeferredCompensationArrangementsMember
UIT-Related Equity And Debt Securities [Member]    
Investment Holdings [Line Items]    
Trading investments 3.4us-gaap_TradingSecurities
/ us-gaap_InvestmentTypeAxis
= ivz_UitRelatedEquityAndDebtSecuritiesMember
3.3us-gaap_TradingSecurities
/ us-gaap_InvestmentTypeAxis
= ivz_UitRelatedEquityAndDebtSecuritiesMember
Common Shares [Member]    
Investment Holdings [Line Items]    
Trading investments $ 29.0us-gaap_TradingSecurities
/ us-gaap_InvestmentTypeAxis
= us-gaap_CommonStockMember
$ 0us-gaap_TradingSecurities
/ us-gaap_InvestmentTypeAxis
= us-gaap_CommonStockMember