Earnings Per Unit (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions		3 Months Ended		6 Months Ended
		Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
BASIC EARNINGS PER COMMON UNIT
Net income attributable to common unitholders		$ 1,411	$ 1,112	$ 2,707	$ 2,453
Earnings allocated to phantom unit awards	[1]	(12)	(9)	(23)	(20)
Net income allocated to common unitholders		$ 1,399	$ 1,103	$ 2,684	$ 2,433
Basic weighted-average number of common units outstanding (in units)		2,180	2,185	2,179	2,184
Basic earnings per common unit (in dollars per unit)		$ 0.64	$ 0.50	$ 1.23	$ 1.11
DILUTED EARNINGS PER COMMON UNIT
Net income attributable to common unitholders		$ 1,411	$ 1,112	$ 2,707	$ 2,453
Net income attributable to preferred units		1	1	2	2
Net income attributable to limited partners		$ 1,412	$ 1,113	$ 2,709	$ 2,455
Diluted weighted-average number of units outstanding:
Distribution-bearing common units (in units)		2,180	2,185	2,179	2,184
Phantom units (in units)	[2]	19	18	19	18
Preferred units (in units)	[2]	2	2	2	2
Total (in units)		2,201	2,205	2,200	2,204
Diluted earnings per common unit (in dollars per unit)		$ 0.64	$ 0.50	$ 1.23	$ 1.11

[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 13 for information regarding phantom unit awards.  See Note 8 for information regarding preferred units.