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Business Segments, Segment Reporting Information (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2019 | Sep. 30, 2018 | Sep. 30, 2019 | Sep. 30, 2018 | Dec. 31, 2018
Information by business segment [Abstract] |  |  |  |  |
Segment gross operating margin | $ 2,051.4 | $ 2,123.6 | $ 6,266.0 | $ 5,160.0 |
Mark-to-market gains (losses) in gross operating margin | 9.1 | 204.1 | 92.9 | (254.8) |
Mark-to-market loss in interest expense | (94.9) | 0.0 | (94.9) | (0.1) |
Total mark-to-market gains (losses) | (85.8) | 204.1 | (2.0) | (254.9) |
Revenues from third parties | 7,948.5 | 9,571.7 | 24,730.2 | 27,257.4 |
Revenues from related parties | 15.6 | 14.2 | 53.7 | 94.5 |
Intersegment and intrasegment revenues | 0.0 | 0.0 | 0.0 | 0.0 |
Total revenues | 7,964.1 | 9,585.9 | 24,783.9 | 27,351.9 |
Equity in income (loss) of unconsolidated affiliates | 139.3 | 112.0 | 431.3 | 350.0 |
Property, plant and equipment, net | 40,763.3 |  | 40,763.3 |  | $ 38,737.6
Investments in unconsolidated affiliates | 2,660.9 |  | 2,660.9 |  | 2,615.1
Intangible assets, net | 3,489.4 |  | 3,489.4 |  | 3,608.4
Goodwill | 5,745.2 |  | 5,745.2 |  | 5,745.2
Segment assets | 52,658.8 |  | 52,658.8 |  | 50,706.3
NGL Pipelines & Services [Member] |  |  |  |  |
Information by business segment [Abstract] |  |  |  |  |
Total revenues | 3,252.1 | 4,622.9 | 9,851.2 | 11,309.9 |
Equity in income (loss) of unconsolidated affiliates | 25.9 | 28.3 | 82.7 | 87.1 |
Investments in unconsolidated affiliates | 690.9 |  | 690.9 |  | 662.0
Intangible assets, net | 366.7 |  | 366.7 |  | 380.1
Crude Oil Pipelines & Services [Member] |  |  |  |  |
Information by business segment [Abstract] |  |  |  |  |
Total revenues | 2,478.3 | 2,494.9 | 7,952.2 | 8,847.0 |
Equity in income (loss) of unconsolidated affiliates | 113.2 | 83.7 | 348.8 | 265.1 |
Investments in unconsolidated affiliates | 1,877.2 |  | 1,877.2 |  | 1,867.5
Intangible assets, net | 2,023.4 |  | 2,023.4 |  | 2,094.6
Natural Gas Pipelines & Services [Member] |  |  |  |  |
Information by business segment [Abstract] |  |  |  |  |
Total revenues | 715.5 | 850.2 | 2,462.3 | 2,447.8 |
Equity in income (loss) of unconsolidated affiliates | 1.6 | 2.1 | 4.9 | 4.7 |
Investments in unconsolidated affiliates | 31.4 |  | 31.4 |  | 22.8
Intangible assets, net | 951.4 |  | 951.4 |  | 979.3
Petrochemical & Refined Products Services [Member] |  |  |  |  |
Information by business segment [Abstract] |  |  |  |  |
Total revenues | 1,518.2 | 1,617.9 | 4,518.2 | 4,747.2 |
Equity in income (loss) of unconsolidated affiliates | (1.4) | (2.1) | (5.1) | (6.9) |
Investments in unconsolidated affiliates | 61.4 |  | 61.4 |  | 62.8
Intangible assets, net | 147.9 |  | 147.9 |  | 154.4
Reportable Business Segments [Member] | NGL Pipelines & Services [Member] |  |  |  |  |
Information by business segment [Abstract] |  |  |  |  |
Segment gross operating margin | 1,008.3 | 1,063.1 | 2,933.8 | 2,861.7 |
Mark-to-market gains (losses) in gross operating margin | (0.7) | 0.1 | (0.1) | 7.9 |
Revenues from third parties | 3,250.1 | 4,616.7 | 9,843.9 | 11,295.1 |
Revenues from related parties | 2.0 | 6.2 | 7.3 | 14.8 |
Intersegment and intrasegment revenues | 4,729.3 | 6,814.9 | 14,715.5 | 19,384.4 |
Total revenues | 7,981.4 | 11,437.8 | 24,566.7 | 30,694.3 |
Equity in income (loss) of unconsolidated affiliates | 25.9 | 28.3 | 82.7 | 87.1 |
Property, plant and equipment, net | 16,212.2 |  | 16,212.2 |  | 14,845.4
Investments in unconsolidated affiliates | 690.9 |  | 690.9 |  | 662.0
Intangible assets, net | 366.7 |  | 366.7 |  | 380.1
Goodwill | 2,651.7 |  | 2,651.7 |  | 2,651.7
Segment assets | 19,921.5 |  | 19,921.5 |  | 18,539.2
Reportable Business Segments [Member] | Crude Oil Pipelines & Services [Member] |  |  |  |  |
Information by business segment [Abstract] |  |  |  |  |
Segment gross operating margin | 496.2 | 594.2 | 1,671.7 | 867.0 |
Mark-to-market gains (losses) in gross operating margin | 9.8 | 200.2 | 95.0 | (267.4) |
Revenues from third parties | 2,467.9 | 2,490.7 | 7,916.5 | 8,777.2 |
Revenues from related parties | 10.4 | 4.2 | 35.7 | 69.8 |
Intersegment and intrasegment revenues | 9,479.7 | 6,278.8 | 26,818.0 | 27,683.6 |
Total revenues | 11,958.0 | 8,773.7 | 34,770.2 | 36,530.6 |
Equity in income (loss) of unconsolidated affiliates | 113.2 | 83.7 | 348.8 | 265.1 |
Property, plant and equipment, net | 6,316.2 |  | 6,316.2 |  | 5,847.7
Investments in unconsolidated affiliates | 1,877.2 |  | 1,877.2 |  | 1,867.5
Intangible assets, net | 2,023.4 |  | 2,023.4 |  | 2,094.6
Goodwill | 1,841.0 |  | 1,841.0 |  | 1,841.0
Segment assets | 12,057.8 |  | 12,057.8 |  | 11,650.8
Reportable Business Segments [Member] | Natural Gas Pipelines & Services [Member] |  |  |  |  |
Information by business segment [Abstract] |  |  |  |  |
Segment gross operating margin | 258.5 | 216.9 | 824.6 | 628.2 |
Mark-to-market gains (losses) in gross operating margin | 1.3 | 4.7 | 1.3 | 5.9 |
Revenues from third parties | 712.3 | 846.4 | 2,451.6 | 2,437.9 |
Revenues from related parties | 3.2 | 3.8 | 10.7 | 9.9 |
Intersegment and intrasegment revenues | 141.7 | 186.6 | 500.2 | 522.5 |
Total revenues | 857.2 | 1,036.8 | 2,962.5 | 2,970.3 |
Equity in income (loss) of unconsolidated affiliates | 1.6 | 2.1 | 4.9 | 4.7 |
Property, plant and equipment, net | 8,320.5 |  | 8,320.5 |  | 8,303.8
Investments in unconsolidated affiliates | 31.4 |  | 31.4 |  | 22.8
Intangible assets, net | 951.4 |  | 951.4 |  | 979.3
Goodwill | 296.3 |  | 296.3 |  | 296.3
Segment assets | 9,599.6 |  | 9,599.6 |  | 9,602.2
Reportable Business Segments [Member] | Petrochemical & Refined Products Services [Member] |  |  |  |  |
Information by business segment [Abstract] |  |  |  |  |
Segment gross operating margin | 288.4 | 249.4 | 835.9 | 803.1 |
Mark-to-market gains (losses) in gross operating margin | (1.3) | (0.9) | (3.3) | (1.2) |
Revenues from third parties | 1,518.2 | 1,617.9 | 4,518.2 | 4,747.2 |
Revenues from related parties | 0.0 | 0.0 | 0.0 | 0.0 |
Intersegment and intrasegment revenues | 558.1 | 844.3 | 1,890.4 | 2,241.6 |
Total revenues | 2,076.3 | 2,462.2 | 6,408.6 | 6,988.8 |
Equity in income (loss) of unconsolidated affiliates | (1.4) | (2.1) | (5.1) | (6.9) |
Property, plant and equipment, net | 6,356.3 |  | 6,356.3 |  | 6,213.9
Investments in unconsolidated affiliates | 61.4 |  | 61.4 |  | 62.8
Intangible assets, net | 147.9 |  | 147.9 |  | 154.4
Goodwill | 956.2 |  | 956.2 |  | 956.2
Segment assets | 7,521.8 |  | 7,521.8 |  | 7,387.3
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 | (14,908.8) | (14,124.6) | (43,924.1) | (49,832.1) |
Total revenues | (14,908.8) | (14,124.6) | (43,924.1) | (49,832.1) |
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 | 3,558.1 |  | 3,558.1 |  | 3,526.8
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 | $ 3,558.1 |  | $ 3,558.1 |  | $ 3,526.8

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