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Partners' Capital and Distributions - Common Equity Repurchase Program (Details) - USD ($) $ in Millions	3 Months Ended					9 Months Ended
	Jun. 30, 2022	Mar. 31, 2022	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Sep. 30, 2022	Sep. 30, 2021
Common Units
Partners Capital and Distribution
Repurchase and cancellation of common units under the Common Equity Repurchase Program (units)	4,876,062	2,375,299	6,626,711	4,940,592	350,000
Common Equity Repurchase Program
Partners Capital and Distribution
Common equity repurchase program, remaining amount						$ 198
Common Equity Repurchase Program | Common Units
Partners Capital and Distribution
Repurchase and cancellation of common units under the Common Equity Repurchase Program (units)						7,300,000	11,900,000
Common equity repurchase program, repurchased amount						$ 74	$ 117

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Amount remaining of a stock repurchase plan authorized.

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Number of shares that have been repurchased and retired during the period.

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