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Uniform Net Capital Rule Requirements (Details 2) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2014
Dec. 31, 2013
Waddell & Reed, Inc. (W&R)    
Net capital and aggregated indebtedness information for entity's broker/dealer subsidiaries    
Net capital $ 10,965us-gaap_NetCapital
/ dei_LegalEntityAxis
= wdr_WaddellAndReedIncMember
$ 23,688us-gaap_NetCapital
/ dei_LegalEntityAxis
= wdr_WaddellAndReedIncMember
Required capital 250us-gaap_MinimumNetCapitalRequiredForBrokerDealerSubsidiary1
/ dei_LegalEntityAxis
= wdr_WaddellAndReedIncMember
250us-gaap_MinimumNetCapitalRequiredForBrokerDealerSubsidiary1
/ dei_LegalEntityAxis
= wdr_WaddellAndReedIncMember
Excess of required capital 10,715us-gaap_ExcessNetCapitalAt1500Percent
/ dei_LegalEntityAxis
= wdr_WaddellAndReedIncMember
23,438us-gaap_ExcessNetCapitalAt1500Percent
/ dei_LegalEntityAxis
= wdr_WaddellAndReedIncMember
Ivy Funds Distributor, Inc. (IFDI)    
Net capital and aggregated indebtedness information for entity's broker/dealer subsidiaries    
Net capital 19,455us-gaap_NetCapital
/ dei_LegalEntityAxis
= wdr_IvyFundsDistributorIncMember
14,648us-gaap_NetCapital
/ dei_LegalEntityAxis
= wdr_IvyFundsDistributorIncMember
Required capital 3,995us-gaap_MinimumNetCapitalRequiredForBrokerDealerSubsidiary1
/ dei_LegalEntityAxis
= wdr_IvyFundsDistributorIncMember
3,340us-gaap_MinimumNetCapitalRequiredForBrokerDealerSubsidiary1
/ dei_LegalEntityAxis
= wdr_IvyFundsDistributorIncMember
Excess of required capital $ 15,460us-gaap_ExcessNetCapitalAt1500Percent
/ dei_LegalEntityAxis
= wdr_IvyFundsDistributorIncMember
$ 11,308us-gaap_ExcessNetCapitalAt1500Percent
/ dei_LegalEntityAxis
= wdr_IvyFundsDistributorIncMember
Ratio of aggregate indebtedness to net capital 3.08us-gaap_RatioOfIndebtednessToNetCapital1
/ dei_LegalEntityAxis
= wdr_IvyFundsDistributorIncMember
3.42us-gaap_RatioOfIndebtednessToNetCapital1
/ dei_LegalEntityAxis
= wdr_IvyFundsDistributorIncMember