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Revenues, Revenues by Business Segment and Revenue Type (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2018 | Sep. 30, 2017 | Sep. 30, 2018 | Sep. 30, 2017
Revenue [Abstract] |  |  |  |  |  |  |  |
Revenues | $ 9,585.9 | [1] | $ 6,886.9 | [2] | $ 27,351.9 | [1] | $ 20,814.9 | [2]
Percentage increase in revenues due to addition of revenue stream for non-cash consideration |  |  |  |  | 2.00% |  |  |
Sales of Products [Member] | Revenues [Member] | Product Concentration Risk [Member] |  |  |  |  |  |  |  |
Revenue [Abstract] |  |  |  |  |  |  |  |
Concentration risk percentage | 85.00% |  | 84.00% |  | 85.00% |  | 84.00% |
Midstream Services [Member] | Revenues [Member] | Product Concentration Risk [Member] |  |  |  |  |  |  |  |
Revenue [Abstract] |  |  |  |  |  |  |  |
Concentration risk percentage | 15.00% |  | 16.00% |  | 15.00% |  | 16.00% |
NGL Pipelines & Services [Member] |  |  |  |  |  |  |  |
Revenue [Abstract] |  |  |  |  |  |  |  |
Revenues | $ 4,622.9 | [1] | $ 2,914.3 | [2] | $ 11,309.9 | [1] | $ 8,880.7 | [2]
NGL Pipelines & Services [Member] | Sales of NGLs and Related Products [Member] |  |  |  |  |  |  |  |
Revenue [Abstract] |  |  |  |  |  |  |  |
Revenues | 3,898.2 | [1] | 2,415.3 | [2] | 9,324.5 | [1] | 7,460.5 | [2]
NGL Pipelines & Services [Member] | Midstream Services [Member] |  |  |  |  |  |  |  |
Revenue [Abstract] |  |  |  |  |  |  |  |
Revenues | 724.7 | [1] | 499.0 | [2] | 1,985.4 | [1] | 1,420.2 | [2]
Crude Oil Pipelines & Services [Member] |  |  |  |  |  |  |  |
Revenue [Abstract] |  |  |  |  |  |  |  |
Revenues | 2,494.9 | [1] | 1,796.7 | [2] | 8,847.0 | [1] | 5,503.5 | [2]
Crude Oil Pipelines & Services [Member] | Sales of Crude Oil [Member] |  |  |  |  |  |  |  |
Revenue [Abstract] |  |  |  |  |  |  |  |
Revenues | 2,209.0 | [1] | 1,589.0 | [2] | 8,082.9 | [1] | 4,912.7 | [2]
Crude Oil Pipelines & Services [Member] | Midstream Services [Member] |  |  |  |  |  |  |  |
Revenue [Abstract] |  |  |  |  |  |  |  |
Revenues | 285.9 | [1] | 207.7 | [2] | 764.1 | [1] | 590.8 | [2]
Natural Gas Pipelines & Services [Member] |  |  |  |  |  |  |  |
Revenue [Abstract] |  |  |  |  |  |  |  |
Revenues | 850.2 | [1] | 796.6 | [2] | 2,447.8 | [1] | 2,344.0 | [2]
Natural Gas Pipelines & Services [Member] | Sales of Natural Gas [Member] |  |  |  |  |  |  |  |
Revenue [Abstract] |  |  |  |  |  |  |  |
Revenues | 589.0 | [1] | 568.9 | [2] | 1,681.5 | [1] | 1,673.5 | [2]
Natural Gas Pipelines & Services [Member] | Midstream Services [Member] |  |  |  |  |  |  |  |
Revenue [Abstract] |  |  |  |  |  |  |  |
Revenues | 261.2 | [1] | 227.7 | [2] | 766.3 | [1] | 670.5 | [2]
Petrochemical & Refined Products Services [Member] |  |  |  |  |  |  |  |
Revenue [Abstract] |  |  |  |  |  |  |  |
Revenues | 1,617.9 | [1] | 1,379.3 | [2] | 4,747.2 | [1] | 4,086.7 | [2]
Petrochemical & Refined Products Services [Member] | Sales of Petrochemicals and Refined Products [Member] |  |  |  |  |  |  |  |
Revenue [Abstract] |  |  |  |  |  |  |  |
Revenues | 1,408.9 | [1] | 1,194.2 | [2] | 4,111.6 | [1] | 3,519.4 | [2]
Petrochemical & Refined Products Services [Member] | Midstream Services [Member] |  |  |  |  |  |  |  |
Revenue [Abstract] |  |  |  |  |  |  |  |
Revenues | $ 209.0 | [1] | $ 185.1 | [2] | $ 635.6 | [1] | $ 567.3 | [2]
[1] | Revenues are accounted for under ASC 606 upon implementation at January 1, 2018.
[2] | Revenues are accounted for under ASC 605 for historical periods prior to January 1, 2018.

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