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Partners' Capital and Distributions - Distributions (Details) - Common Units - Cash Distribution - USD ($) $ / shares in Units, $ in Millions	May 15, 2019	Feb. 14, 2019
Partners Capital and Distribution [Line Items]
Total distributions paid		$ 218
Distributions per common unit, paid (usd per unit)		$ 0.30
Forecast
Partners Capital and Distribution [Line Items]
Total distributions paid	$ 262
Distributions per common unit, paid (usd per unit)	$ 0.36
Public
Partners Capital and Distribution [Line Items]
Distributions to common unitholders		$ 134
Public | Forecast
Partners Capital and Distribution [Line Items]
Distributions to common unitholders	$ 161
AAP
Partners Capital and Distribution [Line Items]
Distributions to common unitholders		$ 84
AAP | Forecast
Partners Capital and Distribution [Line Items]
Distributions to common unitholders	$ 101

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Per unit of ownership amount of cash distributions paid to unit-holder of a limited partnership (LP).

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
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The total amount of distributions to limited partners.

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Total distributions to each class of partners (i.e., general, limited and preferred partners).

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