Equity-Based Awards, Phantom Unit Awards (Details) - USD ($) $ / shares in Units, $ in Millions		3 Months Ended
		Mar. 31, 2022	Mar. 31, 2021
Summary of awards activity, equity instruments other than options, additional disclosures [Abstract]
Cash payments made in connection with DERs		$ 8	$ 7
Phantom Unit Awards [Member]
Summary of awards activity, equity instruments other than options [Roll Forward]
Beginning of period (in units)		17,170,919
Granted (in units)	[1]	7,948,380
Vested (in units)		(5,891,941)
Forfeited (in units)		(181,820)
End of period (in units)		19,045,538
Phantom units outstanding, weighted-average grant date fair value [Roll Forward]
Weighted-average grant date fair value per unit, at beginning of period (in dollars per unit)	[2]	$ 24.31
Granted weighted-average grant date fair value per unit (in dollars per unit)	[1],[2]	24.10
Vested weighted-average grant date fair value per unit (in dollars per unit)	[2]	25.20
Forfeited weighted-average grant date fair value per unit (in dollars per unit)	[2]	23.95
Weighted-average grant date fair value per unit, at end of period (in dollars per unit)	[2]	$ 23.95
Summary of awards activity, equity instruments other than options, additional disclosures [Abstract]
Aggregate grant date fair value		$ 192
Estimated forfeiture rate		2.00%
Cash payments made in connection with DERs		$ 8	7
Total intrinsic value of phantom unit awards that vested during period		141	$ 113
Unrecognized Compensation Expense [Abstract]
Unrecognized compensation cost		$ 284
Recognition period for total unrecognized compensation cost		2 years 3 months 18 days
Phantom Unit Awards [Member] | Minimum [Member]
Summary of awards activity, equity instruments other than options, additional disclosures [Abstract]
Grant date market price of common units (in dollars per unit)		$ 24.10
Phantom Unit Awards [Member] | Maximum [Member]
Summary of awards activity, equity instruments other than options, additional disclosures [Abstract]
Grant date market price of common units (in dollars per unit)		$ 24.42
Phantom Unit Awards [Member] | Enterprise [Member]
Unrecognized Compensation Expense [Abstract]
Unrecognized compensation cost		$ 238

[1] The aggregate grant date fair value of phantom unit awards issued during 2022 was $192 million based on a grant date market price of the Partnership’s common units ranging from $24.10 to $24.42 per unit.  An estimated annual forfeiture rate of 2.0% was applied to these awards.

[2] Determined by dividing the aggregate grant date fair value of awards (before an allowance for forfeitures) by the number of awards issued.