Partners' Capital and Distributions (Schedule of Capital Units) (Details)	9 Months Ended
Sep. 30, 2020 shares
Increase (Decrease) in Partners' Capital [Roll Forward]
Limited partner units outstanding, beginning balance (in shares)	228,403,428
Stock Repurchased During Period, Shares	(4,987,128)
Limited partner units outstanding, ending balance (in shares)	223,700,943
Management [Member]
Increase (Decrease) in Partners' Capital [Roll Forward]
During 2020–Other (in shares)	275,093
Director [Member]
Increase (Decrease) in Partners' Capital [Roll Forward]
During 2020–Other (in shares)	9,550

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

No definition available.

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- Definition

The number of limited partner units outstanding.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 5
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- Definition

Number of units issued for unit-based payment arrangement issued by partnership. Partner includes, but is not limited to, general, limited and preferred partners.

+ References

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-Publisher FASB
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-Section S99
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- Definition

Number of shares that have been repurchased during the period and have not been retired and are not held in treasury. Some state laws may govern the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

+ References

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