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Partners' Capital and Distributions - Common Equity Repurchase Program (Details) - Common Equity Repurchase Program - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Nov. 30, 2020
Partners Capital and Distribution [Line Items] |  |  |
Stock repurchase program, authorized amount |  |  | $ 500
Total purchase price of common units repurchased | $ 178 | $ 50 |
Common equity repurchase program, remaining amount | $ 272 |  |
Maximum |  |  |
Partners Capital and Distribution [Line Items] |  |  |
Stock repurchase program, authorized amount |  |  | $ 500

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