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Composition of Certain Financial Statement Captions (Accrued Liabilities) (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Items Included in Consolidated Statement of Financial Condition [Abstract]
Accrued employee compensation	$ 31,825	$ 97,603
Accrued consulting, outsourcing and professional fees	33,031	31,000
Accrued sub-advisory, distribution and other asset management fees	42,616	42,583
Accrued dividend payable	0	50,761
Accrued income taxes	28,464	6,559
Other accrued liabilities	37,924	51,128
Total accrued liabilities	$ 173,860	$ 279,634

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Carrying amount as of the balance sheet date of the unpaid sum of the known and estimated amounts payable to satisfy all currently due domestic and foreign income tax obligations.

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Carrying value as of the balance sheet date of obligations incurred and payable, pertaining to costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered. Examples include taxes, interest, rent and utilities. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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