Amount of expense for administrative services provided to the limited liability company (LLC) or limited partnership (LP) by the managing member or general partner, affiliate of managing member or general partner, or affiliate of LLC or LP, for example, but not limited to, salaries, rent, or overhead costs.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 850
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864

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Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
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-Section 45
-Paragraph 4
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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
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
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No definition available.

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Subsequent Events (Details) - USD ($) $ / shares in Units, $ in Millions		3 Months Ended														12 Months Ended
	Jan. 20, 2021	Mar. 31, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Subsequent Event [Line Items]
Distributions per Limited Partner unit (in dollars per share)			$ 0.46000	$ 0.46000	$ 0.46000	$ 0.46000	$ 0.46000	$ 0.44500	$ 0.43000	$ 0.41500	$ 0.40000	$ 0.38200	$ 0.36500	$ 0.34800	$ 0.33300		$ 1.8400	$ 1.7500	$ 1.4950
Scenario, Forecast
Subsequent Event [Line Items]
General and administrative fee																$ 10
Scenario, Forecast \| Auger Pipeline
Subsequent Event [Line Items]
Asset impairments		$ 3
Subsequent Event \| Cash Distribution
Subsequent Event [Line Items]
Distributions per Limited Partner unit (in dollars per share)	$ 0.4600
Subsequent Event \| Preferred Unit Distribution
Subsequent Event [Line Items]
Distributions per Limited Partner unit (in dollars per share)	$ 0.2363