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Subsequent Events (Details) - Subsequent Event - BlueMountain - Equity Method Investee $ in Billions	Oct. 01, 2019 USD ($)
Subsequent Event [Line Items]
Assets under management	$ 18.3
Percentage of outstanding equity interest	100.00%

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- Definition

Equity Method Investment, Outstanding Ownership Percentage Sold

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No definition available.

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- Definition

The carrying amount of assets an investment adviser manages on behalf of investors.

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No definition available.

+ Details

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- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

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No definition available.

+ Details

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- Details

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X

- Details

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- Details

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