Earnings Per Unit (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions		12 Months Ended
		Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
BASIC EARNINGS PER COMMON UNIT
Net income attributable to common unitholders		$ 5,529	$ 5,487	$ 4,634
Earnings allocated to phantom unit awards	[1]	(50)	(46)	(37)
Net income allocated to common unitholders		$ 5,479	$ 5,441	$ 4,597
Basic weighted-average number of common units outstanding (in units)		2,172	2,178	2,183
Basic earnings per common unit (in dollars per unit)		$ 2.52	$ 2.5	$ 2.11
DILUTED EARNINGS PER COMMON UNIT
Net income attributable to common unitholders		$ 5,529	$ 5,487	$ 4,634
Net income attributable to preferred units		3	3	4
Net income attributable to limited partners		$ 5,532	$ 5,490	$ 4,638
Diluted weighted-average number of units outstanding:
Distribution-bearing common units (in units)		2,172	2,178	2,183
Phantom units (in units)	[2]	20	19	18
Preferred units (in units)	[2]	2	2	2
Total (in units)		2,194	2,199	2,203
Diluted earnings per common unit (in dollars per unit)		$ 2.52	$ 2.5	$ 2.1

[1] Phantom units are considered participating securities for purposes of computing basic earnings per unit. See Note 13 for information regarding the phantom units. 

[2] We use the “if-converted method” to determine the potential dilutive effect of the vesting of phantom unit awards and the conversion of preferred units outstanding.  See Note 8 for information regarding preferred units.