Equity and Distributions, Distributions (Details) - $ / shares	3 Months Ended		12 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2019	Dec. 31, 2018
Distributions to Partners [Abstract]
Quarterly increase in cash distribution per unit (in dollars per unit)			$ 0.0025
Forecasted rate of annual increase of distributions per unit			2.30%
Quarterly percentage increase in distribution per unit	2.30%
Cash Distribution [Member]
Distributions to Partners [Abstract]
Distribution Per Common Unit (in dollars per unit)	$ 0.4400	$ 0.4300	$ 1.7650	$ 1.7250