Revenue - Major Customers (Details) - Revenue from contract with customer benchmark - Customer concentration risk - Fidelity	3 Months Ended
Mar. 31, 2020	Mar. 31, 2019
Concentration Risk [Line Items]
Revenue as a percentage of the company's total	15.00%	16.00%
Envestnet Wealth Solutions
Concentration Risk [Line Items]
Revenue as a percentage of the company's total	19.00%	20.00%

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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