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Business Segments and Related Information, Segment Reporting Information (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2021 | Jun. 30, 2020 | Jun. 30, 2021 | Jun. 30, 2020 | Dec. 31, 2020
Information by business segment [Abstract] |  |  |  |  |
Segment gross operating margin | $ 2,044.8 | $ 2,002.9 | $ 4,348.1 | $ 4,060.1 |
Revenues from third parties | 9,440.7 | 5,745.3 | 18,581.8 | 13,211.8 |
Revenues from related parties | 9.4 | 5.7 | 23.6 | 21.7 |
Intersegment and intrasegment revenues | 0.0 | 0.0 | 0.0 | 0.0 |
Total revenues | 9,450.1 | 5,751.0 | 18,605.4 | 13,233.5 |
Equity in income (loss) of unconsolidated affiliates | 160.7 | 113.3 | 309.6 | 254.1 |
Property, plant and equipment, net | 42,233.1 |  | 42,233.1 |  | $ 41,912.8
Investments in unconsolidated affiliates | 2,442.7 |  | 2,442.7 |  | 2,429.2
Intangible assets, net | 3,229.7 |  | 3,229.7 |  | 3,309.1
Goodwill | 5,448.9 |  | 5,448.9 |  | 5,448.9
Segment assets | 53,354.4 |  | 53,354.4 |  | 53,100.0
NGL Pipelines & Services [Member] |  |  |  |  |
Information by business segment [Abstract] |  |  |  |  |
Total revenues | 3,587.1 | 2,476.3 | 7,170.6 | 5,444.4 |
Equity in income (loss) of unconsolidated affiliates | 28.9 | 28.8 | 57.0 | 61.5 |
Investments in unconsolidated affiliates | 658.4 |  | 658.4 |  | 671.6
Intangible assets, net | 329.4 |  | 329.4 |  | 334.1
Crude Oil Pipelines & Services [Member] |  |  |  |  |
Information by business segment [Abstract] |  |  |  |  |
Total revenues | 2,503.5 | 1,463.2 | 4,669.0 | 3,502.1 |
Equity in income (loss) of unconsolidated affiliates | 130.1 | 84.1 | 249.0 | 191.4 |
Investments in unconsolidated affiliates | 1,749.4 |  | 1,749.4 |  | 1,723.7
Intangible assets, net | 1,899.7 |  | 1,899.7 |  | 1,936.6
Natural Gas Pipelines & Services [Member] |  |  |  |  |
Information by business segment [Abstract] |  |  |  |  |
Total revenues | 709.1 | 585.2 | 2,295.9 | 1,255.8 |
Equity in income (loss) of unconsolidated affiliates | 1.5 | 1.3 | 2.9 | 2.9 |
Investments in unconsolidated affiliates | 32.2 |  | 32.2 |  | 31.4
Intangible assets, net | 870.6 |  | 870.6 |  | 905.0
Petrochemical & Refined Products Services [Member] |  |  |  |  |
Information by business segment [Abstract] |  |  |  |  |
Total revenues | 2,650.4 | 1,226.3 | 4,469.9 | 3,031.2 |
Equity in income (loss) of unconsolidated affiliates | 0.2 | (0.9) | 0.7 | (1.7) |
Investments in unconsolidated affiliates | 2.7 |  | 2.7 |  | 2.5
Intangible assets, net | 130.0 |  | 130.0 |  | 133.4
Reportable Business Segments [Member] | NGL Pipelines & Services [Member] |  |  |  |  |
Information by business segment [Abstract] |  |  |  |  |
Segment gross operating margin | 1,097.6 | 968.1 | 2,184.0 | 2,010.1 |
Revenues from third parties | 3,584.4 | 2,474.7 | 7,165.1 | 5,441.0 |
Revenues from related parties | 2.7 | 1.6 | 5.5 | 3.4 |
Intersegment and intrasegment revenues | 10,298.2 | 5,947.7 | 23,386.8 | 11,728.4 |
Total revenues | 13,885.3 | 8,424.0 | 30,557.4 | 17,172.8 |
Equity in income (loss) of unconsolidated affiliates | 28.9 | 28.8 | 57.0 | 61.5 |
Property, plant and equipment, net | 17,229.5 |  | 17,229.5 |  | 17,128.3
Investments in unconsolidated affiliates | 658.4 |  | 658.4 |  | 671.6
Intangible assets, net | 329.4 |  | 329.4 |  | 334.1
Goodwill | 2,651.7 |  | 2,651.7 |  | 2,651.7
Segment assets | 20,869.0 |  | 20,869.0 |  | 20,785.7
Reportable Business Segments [Member] | Crude Oil Pipelines & Services [Member] |  |  |  |  |
Information by business segment [Abstract] |  |  |  |  |
Segment gross operating margin | 418.9 | 634.4 | 819.1 | 1,087.3 |
Revenues from third parties | 2,500.3 | 1,461.3 | 4,657.3 | 3,489.0 |
Revenues from related parties | 3.2 | 1.9 | 11.7 | 13.1 |
Intersegment and intrasegment revenues | 7,876.5 | 4,039.9 | 15,296.6 | 11,880.2 |
Total revenues | 10,380.0 | 5,503.1 | 19,965.6 | 15,382.3 |
Equity in income (loss) of unconsolidated affiliates | 130.1 | 84.1 | 249.0 | 191.4 |
Property, plant and equipment, net | 6,989.7 |  | 6,989.7 |  | 6,982.6
Investments in unconsolidated affiliates | 1,749.4 |  | 1,749.4 |  | 1,723.7
Intangible assets, net | 1,899.7 |  | 1,899.7 |  | 1,936.6
Goodwill | 1,841.0 |  | 1,841.0 |  | 1,841.0
Segment assets | 12,479.8 |  | 12,479.8 |  | 12,483.9
Reportable Business Segments [Member] | Natural Gas Pipelines & Services [Member] |  |  |  |  |
Information by business segment [Abstract] |  |  |  |  |
Segment gross operating margin | 202.0 | 208.9 | 737.2 | 492.7 |
Revenues from third parties | 705.6 | 583.0 | 2,289.5 | 1,250.6 |
Revenues from related parties | 3.5 | 2.2 | 6.4 | 5.2 |
Intersegment and intrasegment revenues | 149.3 | 92.9 | 295.1 | 208.0 |
Total revenues | 858.4 | 678.1 | 2,591.0 | 1,463.8 |
Equity in income (loss) of unconsolidated affiliates | 1.5 | 1.3 | 2.9 | 2.9 |
Property, plant and equipment, net | 8,311.2 |  | 8,311.2 |  | 8,465.8
Investments in unconsolidated affiliates | 32.2 |  | 32.2 |  | 31.4
Intangible assets, net | 870.6 |  | 870.6 |  | 905.0
Goodwill | 0.0 |  | 0.0 |  | 0.0
Segment assets | 9,214.0 |  | 9,214.0 |  | 9,402.2
Reportable Business Segments [Member] | Petrochemical & Refined Products Services [Member] |  |  |  |  |
Information by business segment [Abstract] |  |  |  |  |
Segment gross operating margin | 326.3 | 191.5 | 607.8 | 470.0 |
Revenues from third parties | 2,650.4 | 1,226.3 | 4,469.9 | 3,031.2 |
Revenues from related parties | 0.0 | 0.0 | 0.0 | 0.0 |
Intersegment and intrasegment revenues | 6,595.6 | 709.7 | 12,829.8 | 1,517.8 |
Total revenues | 9,246.0 | 1,936.0 | 17,299.7 | 4,549.0 |
Equity in income (loss) of unconsolidated affiliates | 0.2 | (0.9) | 0.7 | (1.7) |
Property, plant and equipment, net | 7,553.6 |  | 7,553.6 |  | 7,528.4
Investments in unconsolidated affiliates | 2.7 |  | 2.7 |  | 2.5
Intangible assets, net | 130.0 |  | 130.0 |  | 133.4
Goodwill | 956.2 |  | 956.2 |  | 956.2
Segment assets | 8,642.5 |  | 8,642.5 |  | 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 | (24,919.6) | (10,790.2) | (51,808.3) | (25,334.4) |
Total revenues | (24,919.6) | (10,790.2) | (51,808.3) | (25,334.4) |
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 | 2,149.1 |  | 2,149.1 |  | 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 | $ 2,149.1 |  | $ 2,149.1 |  | $ 1,807.7

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