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

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Percentage investment held by the managing member or general partner of the limited liability company (LLC) or limited partnership (LP).

+ References

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-Publisher FASB
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-Topic 272
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- Definition

Amount of cash or stock or unit payment to a limited liability corporation managing member or limited partnership general partner after the end of the accounting period.

+ References

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-Publisher FASB
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(Deficit) Equity - Schedule of Distributions Declared and/or Paid (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended													12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Distribution Made To Limited Partner [Line Items]
Distributions declared and/or paid	$ 129.0	$ 121.0	$ 113.4	$ 105.7	$ 83.1	$ 77.4	$ 68.2	$ 63.6	$ 58.6	$ 53.9	$ 49.0	$ 41.7	$ 35.3
Distributions per Limited Partner unit (in dollars per share)	$ 0.40000	$ 0.38200	$ 0.36500	$ 0.34800	$ 0.33300	$ 0.31800	$ 0.30410	$ 0.29100	$ 0.27700	$ 0.26375	$ 0.25000	$ 0.23500	$ 0.22000	$ 1.4950	$ 1.2461	$ 1.0258
Aggregate percentage of interest															200.00%
Shell Pipeline Company L P
Distribution Made To Limited Partner [Line Items]
Distributions declared and/or paid	$ 0.0	$ 0.0	$ 0.0	$ 0.0	$ 0.0	$ 0.0	$ 0.0	$ 0.0	$ 18.7	$ 17.8	$ 16.9	$ 15.8	$ 14.8
Common Units \| General Public
Distribution Made To Limited Partner [Line Items]
Distributions declared and/or paid	49.5	47.3	45.2	43.1	32.9	31.4	26.9	25.7	24.5	23.3	22.0	17.9	13.9
Common Units \| Shell Pipeline Company L P
Distribution Made To Limited Partner [Line Items]
Distributions declared and/or paid	40.0	38.2	36.5	34.8	29.6	28.3	27.0	25.9	5.9	5.7	5.4	5.1	4.7
General Partner
Distribution Made To Limited Partner [Line Items]
Distributions declared and/or paid	2.6	2.4	2.3	2.1	1.7	1.5	1.4	1.3	1.2	1.1	1.0	0.9	0.7
General Partner \| General Partner IDR's
Distribution Made To Limited Partner [Line Items]
Distributions declared and/or paid	$ 36.9	$ 33.1	$ 29.4	$ 25.7	$ 18.9	$ 16.2	$ 12.9	$ 10.7	$ 8.3	$ 6.0	$ 3.7	$ 2.0	$ 1.2