Subsequent Events (Details) - USD ($) $ / shares in Units, $ in Millions	1 Months Ended	9 Months Ended
Nov. 30, 2020	Sep. 30, 2020
Scenario, Forecast [Member]
Subsequent Event [Line Items]
Distributions to unitholders	$ 5.6
Scenario, Forecast [Member] \| Falcon Minerals [Member]
Subsequent Event [Line Items]
Payment received from OpCo	$ 3.0
Class A common stock [Member]
Subsequent Event [Line Items]
Dividends payable, description		The dividend is for the period from July 1, 2020 through September 30, 2020.
Class A common stock [Member] \| Scenario, Forecast [Member]
Subsequent Event [Line Items]
Cash dividend of per share	$ 0.065
Total cash dividend	$ 3.0
Dividend payable date	Dec. 08, 2020
Dividend payable record date	Nov. 24, 2020

Amount of equity impact of cash distribution declared to unit-holder of limited partnership (LP).

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Amount of cash distribution paid to unit-holder of limited partnership (LP).

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Date the declared dividend will be paid, in CCYY-MM-DD format.

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The per share amount of a dividend declared, but not paid, as of the financial reporting date.

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Carrying value as of the balance sheet date of dividends declared but unpaid on equity securities issued by the entity and outstanding.

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Date the holder must own the stock to be entitled to the dividend, in CCYY-MM-DD format.

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Describes the declaration as being a special dividend (over and above the normal dividend); as the annual, semi-annual, quarterly dividend, or other normal periodic dividend; or as some other type of dividend.

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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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