Net Income Per Limited Partner Unit - Schedule of Basic and Diluted Net Income Per Unit (Details) - Limited Partners’ Common Units - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Distribution Made To Limited Partner [Line Items]
Net income attributable to the Partnership’s common unitholders (basic)	$ 146	$ 151
Dilutive effect of preferred units	12	12
Net income attributable to the Partnership’s common unitholders (diluted)	$ 158	$ 163
Weighted average units outstanding
Weighted average units outstanding - Basic (in shares)	393.3	393.3
Dilutive effect of preferred units (in shares)	50.8	50.8
Weighted average units outstanding - Diluted (in shares)	444.1	444.1
Net income per limited partner unit:
Basic (in dollars per share)	$ 0.37	$ 0.38
Diluted (in dollars per share)	$ 0.36	$ 0.37