Capital Accounts, Summary of Changes in Outstanding Units (Details) - shares	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2021
Summary of changes in outstanding units [Roll Forward]
Common units outstanding, beginning balance (in units)	2,185,178,603	2,182,308,958	2,182,308,958
Common unit repurchases under 2019 Buyback Program (in units)		(709,816)
Common units issued in connection with the vesting of phantom unit awards, net (in units)	203,066	3,553,313
Other (in units)		26,148
Common units outstanding, ending balance (in units)	2,185,381,669	2,185,178,603	2,185,381,669