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Business Segments and Related Information, Segment Reporting Information (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2021 | Sep. 30, 2020 | Dec. 31, 2020
Information by business segment [Abstract] |  |  |  |  |
Segment gross operating margin | $ 2,080.4 | $ 2,033.3 | $ 6,428.5 | $ 6,093.4 |
Revenues from third parties | 10,800.4 | 6,914.5 | 29,382.2 | 20,126.3 |
Revenues from related parties | 30.9 | 7.5 | 54.5 | 29.2 |
Intersegment and intrasegment revenues | 0.0 | 0.0 | 0.0 | 0.0 |
Total revenues | 10,831.3 | 6,922.0 | 29,436.7 | 20,155.5 |
Equity in income (loss) of unconsolidated affiliates | 137.6 | 82.0 | 447.2 | 336.1 |
Property, plant and equipment, net | 42,253.8 |  | 42,253.8 |  | $ 41,912.8
Investments in unconsolidated affiliates | 2,433.4 |  | 2,433.4 |  | 2,429.2
Intangible assets, net | 3,190.0 |  | 3,190.0 |  | 3,309.1
Goodwill | 5,448.9 |  | 5,448.9 |  | 5,448.9
Segment assets | 53,326.1 |  | 53,326.1 |  | 53,100.0
NGL Pipelines & Services [Member] |  |  |  |  |
Information by business segment [Abstract] |  |  |  |  |
Total revenues | 3,816.6 | 2,614.0 | 10,987.2 | 8,058.4 |
Equity in income (loss) of unconsolidated affiliates | 30.5 | 29.3 | 87.5 | 90.8 |
Investments in unconsolidated affiliates | 656.4 |  | 656.4 |  | 671.6
Intangible assets, net | 323.2 |  | 323.2 |  | 334.1
Crude Oil Pipelines & Services [Member] |  |  |  |  |
Information by business segment [Abstract] |  |  |  |  |
Total revenues | 3,234.6 | 1,521.6 | 7,903.6 | 5,023.7 |
Equity in income (loss) of unconsolidated affiliates | 105.2 | 51.8 | 354.2 | 243.2 |
Investments in unconsolidated affiliates | 1,742.1 |  | 1,742.1 |  | 1,723.7
Intangible assets, net | 1,879.4 |  | 1,879.4 |  | 1,936.6
Natural Gas Pipelines & Services [Member] |  |  |  |  |
Information by business segment [Abstract] |  |  |  |  |
Total revenues | 979.9 | 606.9 | 3,275.8 | 1,862.7 |
Equity in income (loss) of unconsolidated affiliates | 1.4 | 1.4 | 4.3 | 4.3 |
Investments in unconsolidated affiliates | 32.1 |  | 32.1 |  | 31.4
Intangible assets, net | 859.1 |  | 859.1 |  | 905.0
Petrochemical & Refined Products Services [Member] |  |  |  |  |
Information by business segment [Abstract] |  |  |  |  |
Total revenues | 2,800.2 | 2,179.5 | 7,270.1 | 5,210.7 |
Equity in income (loss) of unconsolidated affiliates | 0.5 | (0.5) | 1.2 | (2.2) |
Investments in unconsolidated affiliates | 2.8 |  | 2.8 |  | 2.5
Intangible assets, net | 128.3 |  | 128.3 |  | 133.4
Reportable Business Segments [Member] | NGL Pipelines & Services [Member] |  |  |  |  |
Information by business segment [Abstract] |  |  |  |  |
Segment gross operating margin | 1,022.9 | 1,028.1 | 3,206.9 | 3,038.2 |
Revenues from third parties | 3,814.5 | 2,612.4 | 10,979.6 | 8,053.4 |
Revenues from related parties | 2.1 | 1.6 | 7.6 | 5.0 |
Intersegment and intrasegment revenues | 13,753.5 | 7,098.2 | 37,140.3 | 18,826.6 |
Total revenues | 17,570.1 | 9,712.2 | 48,127.5 | 26,885.0 |
Equity in income (loss) of unconsolidated affiliates | 30.5 | 29.3 | 87.5 | 90.8 |
Property, plant and equipment, net | 17,330.0 |  | 17,330.0 |  | 17,128.3
Investments in unconsolidated affiliates | 656.4 |  | 656.4 |  | 671.6
Intangible assets, net | 323.2 |  | 323.2 |  | 334.1
Goodwill | 2,651.7 |  | 2,651.7 |  | 2,651.7
Segment assets | 20,961.3 |  | 20,961.3 |  | 20,785.7
Reportable Business Segments [Member] | Crude Oil Pipelines & Services [Member] |  |  |  |  |
Information by business segment [Abstract] |  |  |  |  |
Segment gross operating margin | 422.9 | 481.8 | 1,242.0 | 1,569.1 |
Revenues from third parties | 3,210.0 | 1,518.0 | 7,867.3 | 5,007.0 |
Revenues from related parties | 24.6 | 3.6 | 36.3 | 16.7 |
Intersegment and intrasegment revenues | 6,611.2 | 6,422.5 | 21,907.8 | 18,302.7 |
Total revenues | 9,845.8 | 7,944.1 | 29,811.4 | 23,326.4 |
Equity in income (loss) of unconsolidated affiliates | 105.2 | 51.8 | 354.2 | 243.2 |
Property, plant and equipment, net | 6,927.3 |  | 6,927.3 |  | 6,982.6
Investments in unconsolidated affiliates | 1,742.1 |  | 1,742.1 |  | 1,723.7
Intangible assets, net | 1,879.4 |  | 1,879.4 |  | 1,936.6
Goodwill | 1,841.0 |  | 1,841.0 |  | 1,841.0
Segment assets | 12,389.8 |  | 12,389.8 |  | 12,483.9
Reportable Business Segments [Member] | Natural Gas Pipelines & Services [Member] |  |  |  |  |
Information by business segment [Abstract] |  |  |  |  |
Segment gross operating margin | 223.3 | 208.4 | 960.5 | 701.1 |
Revenues from third parties | 975.7 | 604.6 | 3,265.2 | 1,855.2 |
Revenues from related parties | 4.2 | 2.3 | 10.6 | 7.5 |
Intersegment and intrasegment revenues | 145.9 | 117.0 | 441.0 | 325.0 |
Total revenues | 1,125.8 | 723.9 | 3,716.8 | 2,187.7 |
Equity in income (loss) of unconsolidated affiliates | 1.4 | 1.4 | 4.3 | 4.3 |
Property, plant and equipment, net | 8,280.3 |  | 8,280.3 |  | 8,465.8
Investments in unconsolidated affiliates | 32.1 |  | 32.1 |  | 31.4
Intangible assets, net | 859.1 |  | 859.1 |  | 905.0
Goodwill | 0.0 |  | 0.0 |  | 0.0
Segment assets | 9,171.5 |  | 9,171.5 |  | 9,402.2
Reportable Business Segments [Member] | Petrochemical & Refined Products Services [Member] |  |  |  |  |
Information by business segment [Abstract] |  |  |  |  |
Segment gross operating margin | 411.3 | 315.0 | 1,019.1 | 785.0 |
Revenues from third parties | 2,800.2 | 2,179.5 | 7,270.1 | 5,210.7 |
Revenues from related parties | 0.0 | 0.0 | 0.0 | 0.0 |
Intersegment and intrasegment revenues | 6,149.9 | 1,297.8 | 18,979.7 | 2,815.6 |
Total revenues | 8,950.1 | 3,477.3 | 26,249.8 | 8,026.3 |
Equity in income (loss) of unconsolidated affiliates | 0.5 | (0.5) | 1.2 | (2.2) |
Property, plant and equipment, net | 7,533.6 |  | 7,533.6 |  | 7,528.4
Investments in unconsolidated affiliates | 2.8 |  | 2.8 |  | 2.5
Intangible assets, net | 128.3 |  | 128.3 |  | 133.4
Goodwill | 956.2 |  | 956.2 |  | 956.2
Segment assets | 8,620.9 |  | 8,620.9 |  | 8,620.5
Eliminations [Member] |  |  |  |  |
Information by business segment [Abstract] |  |  |  |  |
Revenues from third parties | 0.0 | 0.0 | 0.0 | 0.0 |
Revenues from related parties | 0.0 | 0.0 | 0.0 | 0.0 |
Intersegment and intrasegment revenues | (26,660.5) | (14,935.5) | (78,468.8) | (40,269.9) |
Total revenues | (26,660.5) | (14,935.5) | (78,468.8) | (40,269.9) |
Equity in income (loss) of unconsolidated affiliates | 0.0 | $ 0.0 | 0.0 | $ 0.0 |
Adjustments [Member] |  |  |  |  |
Information by business segment [Abstract] |  |  |  |  |
Property, plant and equipment, net | 2,182.6 |  | 2,182.6 |  | 1,807.7
Investments in unconsolidated affiliates | 0.0 |  | 0.0 |  | 0.0
Intangible assets, net | 0.0 |  | 0.0 |  | 0.0
Goodwill | 0.0 |  | 0.0 |  | 0.0
Segment assets | $ 2,182.6 |  | $ 2,182.6 |  | $ 1,807.7

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