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Business Segments, Segment Reporting Information (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2015 | Sep. 30, 2014 | Sep. 30, 2015 | Sep. 30, 2014 | Dec. 31, 2014
Information by business segment [Abstract] |  |  |  |  |  |
Revenues from third parties |  | $ 6,294.0 | $ 12,319.2 | $ 20,845.6 | $ 37,697.1 |
Revenues from related parties |  | 13.9 | 11.0 | 27.3 | 63.8 |
Intersegment and intrasegment revenues |  | 0.0 | 0.0 | 0.0 | 0.0 |
Total revenues |  | 6,307.9 | 12,330.2 | 20,872.9 | 37,760.9 |
Equity in income (loss) of unconsolidated affiliates |  | 103.1 | 72.3 | 302.5 | 179.1 |
Gross operating margin |  | 1,341.1 | 1,335.1 | 3,978.7 | 3,928.1 |
Property, plant and equipment, net (see Note 6) |  | 31,214.1 |  | 31,214.1 |  | $ 29,881.6
Investments in unconsolidated affiliates (see Note 7) |  | 2,625.3 |  | 2,625.3 |  | 3,042.0
Intangible assets, net (see Note 9) |  | 4,082.1 |  | 4,082.1 |  | 4,302.1
Goodwill (see Note 9) |  | 5,749.2 |  | 5,749.2 |  | 4,300.2
Segment assets |  | 43,670.7 |  | 43,670.7 |  | 41,525.9
NGL Pipelines and Services [Member] |  |  |  |  |  |
Information by business segment [Abstract] |  |  |  |  |  |
Equity in income (loss) of unconsolidated affiliates |  | 18.9 | 11.7 | 43.0 | 19.2 |
Intangible assets, net (see Note 9) |  | 460.4 |  | 460.4 |  | 689.2
Goodwill (see Note 9) |  | 2,651.7 |  | 2,651.7 |  | 2,210.2
Crude Oil Pipelines & Services [Member] |  |  |  |  |  |
Information by business segment [Abstract] |  |  |  |  |  |
Equity in income (loss) of unconsolidated affiliates |  | 81.2 | 46.8 | 220.5 | 131.7 |
Intangible assets, net (see Note 9) |  | 2,402.3 |  | 2,402.3 |  | 2,223.6
Goodwill (see Note 9) |  | 1,842.8 |  | 1,842.8 |  | 918.7
Natural Gas Pipelines & Services [Member] |  |  |  |  |  |
Information by business segment [Abstract] |  |  |  |  |  |
Equity in income (loss) of unconsolidated affiliates |  | 0.9 | 0.9 | 2.8 | 2.7 |
Intangible assets, net (see Note 9) |  | 1,025.7 |  | 1,025.7 |  | 972.9
Goodwill (see Note 9) |  | 296.3 |  | 296.3 |  | 296.3
Petrochemical and Refined Products Services [Member] |  |  |  |  |  |
Information by business segment [Abstract] |  |  |  |  |  |
Equity in income (loss) of unconsolidated affiliates |  | (3.3) | (4.2) | (10.4) | (10.3) |
Intangible assets, net (see Note 9) |  | 193.7 |  | 193.7 |  | 374.8
Goodwill (see Note 9) |  | 958.4 |  | 958.4 |  | 793.0
Offshore Pipelines And Services [Member] |  |  |  |  |  |
Information by business segment [Abstract] |  |  |  |  |  |
Equity in income (loss) of unconsolidated affiliates |  | 5.4 | 17.1 | 46.6 | 35.8 |
Intangible assets, net (see Note 9) | [1] | 0.0 |  | 0.0 |  | 41.6
Goodwill (see Note 9) |  | 0.0 |  | 0.0 |  | 82.0
Reportable Business Segments [Member] | NGL Pipelines and Services [Member] |  |  |  |  |  |
Information by business segment [Abstract] |  |  |  |  |  |
Revenues from third parties |  | 2,284.6 | 4,024.0 | 7,223.2 | 13,217.2 |
Revenues from related parties |  | 2.2 | 2.7 | 6.0 | 10.2 |
Intersegment and intrasegment revenues |  | 2,461.0 | 3,603.8 | 7,685.1 | 10,789.7 |
Total revenues |  | 4,747.8 | 7,630.5 | 14,914.3 | 24,017.1 |
Equity in income (loss) of unconsolidated affiliates |  | 18.9 | 11.7 | 43.0 | 19.2 |
Gross operating margin |  | 695.5 | 711.5 | 2,041.3 | 2,172.4 |
Property, plant and equipment, net (see Note 6) |  | 12,192.8 |  | 12,192.8 |  | 11,766.9
Investments in unconsolidated affiliates (see Note 7) |  | 708.9 |  | 708.9 |  | 682.3
Intangible assets, net (see Note 9) |  | 460.4 |  | 460.4 |  | 689.2
Goodwill (see Note 9) |  | 2,651.7 |  | 2,651.7 |  | 2,210.2
Segment assets |  | 16,013.8 |  | 16,013.8 |  | 15,348.6
Reportable Business Segments [Member] | Crude Oil Pipelines & Services [Member] |  |  |  |  |  |
Information by business segment [Abstract] |  |  |  |  |  |
Revenues from third parties |  | 2,316.4 | 5,435.6 | 8,080.4 | 16,236.6 |
Revenues from related parties |  | 6.2 | 1.5 | 8.6 | 31.1 |
Intersegment and intrasegment revenues |  | 1,142.1 | 2,529.5 | 3,958.9 | 10,714.5 |
Total revenues |  | 3,464.7 | 7,966.6 | 12,047.9 | 26,982.2 |
Equity in income (loss) of unconsolidated affiliates |  | 81.2 | 46.8 | 220.5 | 131.7 |
Gross operating margin |  | 254.6 | 190.8 | 704.2 | 534.5 |
Property, plant and equipment, net (see Note 6) |  | 3,550.0 |  | 3,550.0 |  | 2,332.2
Investments in unconsolidated affiliates (see Note 7) |  | 1,817.9 |  | 1,817.9 |  | 1,767.7
Intangible assets, net (see Note 9) |  | 2,402.3 |  | 2,402.3 |  | 2,223.6
Goodwill (see Note 9) |  | 1,842.8 |  | 1,842.8 |  | 918.7
Segment assets |  | 9,613.0 |  | 9,613.0 |  | 7,242.2
Reportable Business Segments [Member] | Natural Gas Pipelines & Services [Member] |  |  |  |  |  |
Information by business segment [Abstract] |  |  |  |  |  |
Revenues from third parties |  | 705.2 | 1,026.5 | 2,117.5 | 3,261.0 |
Revenues from related parties |  | 4.5 | 5.4 | 10.8 | 16.5 |
Intersegment and intrasegment revenues |  | 180.2 | 231.0 | 519.7 | 835.8 |
Total revenues |  | 889.9 | 1,262.9 | 2,648.0 | 4,113.3 |
Equity in income (loss) of unconsolidated affiliates |  | 0.9 | 0.9 | 2.8 | 2.7 |
Gross operating margin |  | 192.4 | 195.4 | 588.3 | 618.8 |
Property, plant and equipment, net (see Note 6) |  | 8,680.6 |  | 8,680.6 |  | 8,835.5
Investments in unconsolidated affiliates (see Note 7) |  | 23.1 |  | 23.1 |  | 23.2
Intangible assets, net (see Note 9) |  | 1,025.7 |  | 1,025.7 |  | 972.9
Goodwill (see Note 9) |  | 296.3 |  | 296.3 |  | 296.3
Segment assets |  | 10,025.7 |  | 10,025.7 |  | 10,127.9
Reportable Business Segments [Member] | Petrochemical and Refined Products Services [Member] |  |  |  |  |  |
Information by business segment [Abstract] |  |  |  |  |  |
Revenues from third parties |  | 980.0 | 1,792.0 | 3,347.6 | 4,869.9 |
Revenues from related parties |  | 0.0 | 0.0 | 0.0 | 0.0 |
Intersegment and intrasegment revenues |  | 267.3 | 452.2 | 875.8 | 1,317.6 |
Total revenues |  | 1,247.3 | 2,244.2 | 4,223.4 | 6,187.5 |
Equity in income (loss) of unconsolidated affiliates |  | (3.3) | (4.2) | (10.4) | (10.3) |
Gross operating margin |  | 191.5 | 190.3 | 547.4 | 482.4 |
Property, plant and equipment, net (see Note 6) |  | 3,013.5 |  | 3,013.5 |  | 3,047.2
Investments in unconsolidated affiliates (see Note 7) |  | 75.4 |  | 75.4 |  | 75.1
Intangible assets, net (see Note 9) |  | 193.7 |  | 193.7 |  | 374.8
Goodwill (see Note 9) |  | 958.4 |  | 958.4 |  | 793.0
Segment assets |  | 4,241.0 |  | 4,241.0 |  | 4,290.1
Reportable Business Segments [Member] | Offshore Pipelines And Services [Member] |  |  |  |  |  |
Information by business segment [Abstract] |  |  |  |  |  |
Revenues from third parties |  | 7.8 | 41.1 | 76.9 | 112.4 |
Revenues from related parties |  | 1.0 | 1.4 | 1.9 | 6.0 |
Intersegment and intrasegment revenues |  | 0.1 | 1.2 | 0.6 | 4.8 |
Total revenues |  | 8.9 | 43.7 | 79.4 | 123.2 |
Equity in income (loss) of unconsolidated affiliates |  | 5.4 | 17.1 | 46.6 | 35.8 |
Gross operating margin |  | 7.1 | 47.1 | 97.5 | 120.0 |
Property, plant and equipment, net (see Note 6) |  | 0.0 |  | 0.0 |  | 1,145.1
Investments in unconsolidated affiliates (see Note 7) |  | 0.0 |  | 0.0 |  | 493.7
Intangible assets, net (see Note 9) |  | 0.0 |  | 0.0 |  | 41.6
Goodwill (see Note 9) |  | 0.0 |  | 0.0 |  | 82.0
Segment assets |  | 0.0 |  | 0.0 |  | 1,762.4
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 |  | (4,050.7) | (6,817.7) | (13,040.1) | (23,662.4) |
Total revenues |  | (4,050.7) | (6,817.7) | (13,040.1) | (23,662.4) |
Equity in income (loss) of unconsolidated affiliates |  | 0.0 | 0.0 | 0.0 | 0.0 |
Gross operating margin |  | 0.0 | $ 0.0 | 0.0 | $ 0.0 |
Adjustments [Member] |  |  |  |  |  |
Information by business segment [Abstract] |  |  |  |  |  |
Property, plant and equipment, net (see Note 6) |  | 3,777.2 |  | 3,777.2 |  | 2,754.7
Investments in unconsolidated affiliates (see Note 7) |  | 0.0 |  | 0.0 |  | 0.0
Intangible assets, net (see Note 9) |  | 0.0 |  | 0.0 |  | 0.0
Goodwill (see Note 9) |  | 0.0 |  | 0.0 |  | 0.0
Segment assets |  | $ 3,777.2 |  | $ 3,777.2 |  | $ 2,754.7
[1] | Our intangible assets classified within the Offshore Pipelines & Services segment were sold to Genesis in July 2015 (see Note 6).

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