Units Outstanding (Details) - shares	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Units Outstanding
Outstanding as of December 31, 2019 (in units)	270,380,314
Options exercised (in units)	5,182	400,000
Units issued (in units)	422,703
Units retired (in units)	(2,446,115)
Balance as of June 30, 2020 (in units)	268,362,084
Limited Partners Capital Account Units
Units Outstanding
Units retired (in units)	(700)