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Subsequent Events (Notes)	3 Months Ended
Subsequent Events (Notes)	Jun. 30, 2020
Subsequent Event [Line Items]
Subsequent Events [Text Block]	. Subsequent Events On July 17, 2020, Franklin Templeton and Legg Mason announced that all conditions to the closing of the Merger were satisfied. The closing will take effect at the end of the day on July 31, 2020, the date this Report is being filed. On July 21, 2020, Legg Mason used existing cash resources to repay the total $250,000 of borrowings outstanding under the Credit Agreement.