Partners' Capital and Distributions - Units Outstanding (Details) - shares	3 Months Ended				6 Months Ended
	Jun. 30, 2022	Mar. 31, 2022	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2022	Jun. 30, 2021
Weighted average | Equity-indexed Compensation Plan Award
Activity for preferred units and common units
Dilutive equity-indexed compensation plan awards (units)	800,000				700,000	400,000
Antidilutive securities excluded from computation of net income per common unit (units)			700,000
Series A Preferred Units
Activity for preferred units and common units
Outstanding, beginning of period (units)	71,090,468	71,090,468	71,090,468	71,090,468	71,090,468	71,090,468
Outstanding, end of period (units)	71,090,468	71,090,468	71,090,468	71,090,468	71,090,468	71,090,468
Series A Preferred Units | Weighted average
Activity for preferred units and common units
Antidilutive securities excluded from computation of net income per common unit (units)	71,000,000		71,000,000		71,000,000	71,000,000
Series B Preferred Units
Activity for preferred units and common units
Outstanding, beginning of period (units)	800,000	800,000	800,000	800,000	800,000	800,000
Outstanding, end of period (units)	800,000	800,000	800,000	800,000	800,000	800,000
Common Units
Activity for preferred units and common units
Outstanding, beginning of period (units)	702,668,178	704,991,540	722,055,847	722,380,416	704,991,540	722,380,416
Repurchase and cancellation of common units under the Common Equity Repurchase Program (units)	(4,876,062)	(2,375,299)	(4,940,592)	(350,000)
Issuances of common units under equity-indexed compensation plans (units)	147,830	51,937	256,321	25,431
Outstanding, end of period (units)	697,939,946	702,668,178	717,371,576	722,055,847	697,939,946	717,371,576