Partners' Capital and Distributions (New Common Units Issued To The Public For Cash) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	Jul. 22, 2015	Apr. 10, 2015	Sep. 26, 2014	Sep. 16, 2013
Partners' Capital Notes [Abstract]
Units	10,350	4,600	4,600	5,750
Gross Unit Price	$ 43.77	$ 44.42	$ 50.71	$ 47.51
Issuance Value	$ 453,020	$ 204,332	$ 233,266	$ 273,183
Costs	(15,856)	(6,164)	(7,541)	(9,609)
Net Proceeds	$ 437,164	$ 198,168	$ 225,725	$ 263,574

Costs incurred in connection with common units issued to the public.

No definition available.

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- Definition

Monetary value of the issuance of new units of limited partnership interest in a public offering.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187171-122770

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 04
-Article 3

+ Details

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- Definition

Monetary value of the issuance of new units of limited partnership interest in a public offering, net of offering costs. This is a parenthetical disclosure.

+ References

+ Details

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- Definition

The number of units sold in a public offering of each class of partners' capital account. Units represent shares of ownership of the general, limited, and preferred partners.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 5
-Subparagraph (SAB TOPIC 4.F)
-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187171-122770

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 04
-Paragraph 16
-Subparagraph a, b
-Article 6

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- References

No definition available.

+ Details

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- Definition

Per share amount received by subsidiary or equity investee for each share of common stock issued or sold in the stock transaction.

+ References

No definition available.

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