Income Taxes - Reconciliation of the U.S. Statutory Tax Rate to the Effective Income Tax Rate (Details)	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Tax Disclosure [Abstract]
U.S. statutory tax rate	21.00%	21.00%	35.00%
Rate effect from pass-through entity	(13.90%)	(17.00%)	(34.80%)
Partnership outside basis difference	0.00%	0.00%	26.20%
Rate change impact due to tax reform	0.00%	0.00%	(7.00%)
Other	0.80%	2.20%	(9.20%)
Effective income tax rate	7.90%	6.20%	10.20%

Effective Income Tax Rate Reconciliation, Partnership Outside Basis Difference

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Effective Income Tax Rate Reconciliation Rate, Effect Pass-through Entity

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Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to changes in the income tax rates.

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