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Business Segments, Segment Reporting Information (Details) (USD $) In Millions, unless otherwise specified | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2014 | Jun. 30, 2013 | Jun. 30, 2014 | Jun. 30, 2013 | Dec. 31, 2013
Information by business segment [Abstract] |  |  |  |  |  |  |  |
Revenues from third parties | $ 12,503.5 |  | $ 11,142.6 | $ 25,377.9 |  | $ 22,519.8 |  |
Revenues from related parties | 17.3 |  | 6.7 | 52.8 |  | 12.6 |  |
Intersegment and intrasegment revenues | 0 |  | 0 | 0 |  | 0 |  |
Total revenues | 12,520.8 |  | 11,149.3 | 25,430.7 |  | 22,532.4 |  |
Equity in income (loss) of unconsolidated affiliates | 50.3 |  | 37.6 | 106.8 |  | 82.1 |  |
Gross operating margin | 1,263.2 |  | 1,142.2 | 2,593.0 |  | 2,373.3 |  |
Property, plant and equipment, net (see Note 6) | 27,554.7 |  |  | 27,554.7 |  |  | 26,946.6 |
Investments in unconsolidated affiliates (see Note 7) | 2,879.3 |  |  | 2,879.3 |  |  | 2,437.1 |
Intangible assets, net (see Note 8) | 1,414.9 |  |  | 1,414.9 |  |  | 1,462.2 |
Goodwill (see Note 8) | 2,079.9 | [1] |  | 2,079.9 | [1] |  | 2,080.0 | [1]
Segment assets | 33,928.8 |  |  | 33,928.8 |  |  | 32,925.9 |
NGL Pipelines and Services [Member] |  |  |  |  |  |  |  |
Information by business segment [Abstract] |  |  |  |  |  |  |  |
Revenues from third parties | 4,019.5 |  | 3,504.7 | 9,193.2 |  | 7,455.4 |  |
Revenues from related parties | 1.7 |  | 0.2 | 7.5 |  | 0.5 |  |
Intersegment and intrasegment revenues | 3,324.9 |  | 2,380.4 | 7,185.9 |  | 5,089.4 |  |
Total revenues | 7,346.1 |  | 5,885.3 | 16,386.6 |  | 12,545.3 |  |
Equity in income (loss) of unconsolidated affiliates | 6.1 |  | 3.8 | 7.5 |  | 7.7 |  |
Gross operating margin | 680.9 |  | 544.9 | 1,460.9 |  | 1,137.4 |  |
Property, plant and equipment, net (see Note 6) | 11,800.0 |  |  | 11,800.0 |  |  | 9,957.8 |
Investments in unconsolidated affiliates (see Note 7) | 680.9 |  |  | 680.9 |  |  | 645.5 |
Intangible assets, net (see Note 8) | 273.0 |  |  | 273.0 |  |  | 285.2 |
Goodwill (see Note 8) | 861.2 | [1] |  | 861.2 | [1] |  | 341.2 | [1]
Segment assets | 13,615.1 |  |  | 13,615.1 |  |  | 11,229.7 |
Onshore Natural Gas Pipelines and Services [Member] |  |  |  |  |  |  |  |
Information by business segment [Abstract] |  |  |  |  |  |  |  |
Revenues from third parties | 1,034.5 |  | 953.0 | 2,234.5 |  | 1,827.2 |  |
Revenues from related parties | 6.5 |  | 4.5 | 11.1 |  | 8.0 |  |
Intersegment and intrasegment revenues | 295.4 |  | 254.9 | 604.8 |  | 511.1 |  |
Total revenues | 1,336.4 |  | 1,212.4 | 2,850.4 |  | 2,346.3 |  |
Equity in income (loss) of unconsolidated affiliates | 0.9 |  | 0.9 | 1.8 |  | 1.9 |  |
Gross operating margin | 203.0 |  | 197.7 | 423.4 |  | 388.5 |  |
Property, plant and equipment, net (see Note 6) | 8,865.0 |  |  | 8,865.0 |  |  | 8,917.3 |
Investments in unconsolidated affiliates (see Note 7) | 23.6 |  |  | 23.6 |  |  | 24.2 |
Intangible assets, net (see Note 8) | 994.7 |  |  | 994.7 |  |  | 1,017.8 |
Goodwill (see Note 8) | 296.3 | [1] |  | 296.3 | [1] |  | 296.3 | [1]
Segment assets | 10,179.6 |  |  | 10,179.6 |  |  | 10,255.6 |
Onshore Crude Oil Pipelines and Services [Member] |  |  |  |  |  |  |  |
Information by business segment [Abstract] |  |  |  |  |  |  |  |
Revenues from third parties | 5,865.6 |  | 5,129.5 | 10,801.0 |  | 9,922.7 |  |
Revenues from related parties | 6.7 |  | 0 | 29.6 |  | 0 |  |
Intersegment and intrasegment revenues | 5,634.3 |  | 2,717.0 | 8,185.0 |  | 4,741.7 |  |
Total revenues | 11,506.6 |  | 7,846.5 | 19,015.6 |  | 14,664.4 |  |
Equity in income (loss) of unconsolidated affiliates | 42.2 |  | 30.1 | 84.9 |  | 66.7 |  |
Gross operating margin | 184.0 |  | 197.2 | 343.7 |  | 433.6 |  |
Property, plant and equipment, net (see Note 6) | 1,511.0 |  |  | 1,511.0 |  |  | 1,479.9 |
Investments in unconsolidated affiliates (see Note 7) | 1,577.1 |  |  | 1,577.1 |  |  | 1,165.2 |
Intangible assets, net (see Note 8) | 3.9 |  |  | 3.9 |  |  | 4.5 |
Goodwill (see Note 8) | 305.1 | [1] |  | 305.1 | [1] |  | 305.1 | [1]
Segment assets | 3,397.1 |  |  | 3,397.1 |  |  | 2,954.7 |
Offshore Pipelines And Services [Member] |  |  |  |  |  |  |  |
Information by business segment [Abstract] |  |  |  |  |  |  |  |
Revenues from third parties | 36.6 |  | 39.3 | 71.3 |  | 79.8 |  |
Revenues from related parties | 2.4 |  | 2.0 | 4.6 |  | 4.1 |  |
Intersegment and intrasegment revenues | 1.3 |  | 4.2 | 3.6 |  | 6.2 |  |
Total revenues | 40.3 |  | 45.5 | 79.5 |  | 90.1 |  |
Equity in income (loss) of unconsolidated affiliates | 7.6 |  | 8.7 | 18.7 |  | 15.1 |  |
Gross operating margin | 33.6 |  | 39.7 | 72.9 |  | 80.2 |  |
Property, plant and equipment, net (see Note 6) | 1,184.9 |  |  | 1,184.9 |  |  | 1,223.7 |
Investments in unconsolidated affiliates (see Note 7) | 522.8 |  |  | 522.8 |  |  | 531.8 |
Intangible assets, net (see Note 8) | 46.4 |  |  | 46.4 |  |  | 54.7 |
Goodwill (see Note 8) | 82.0 | [1] |  | 82.0 | [1] |  | 82.1 | [1]
Segment assets | 1,836.1 |  |  | 1,836.1 |  |  | 1,892.3 |
Petrochemical and Refined Products Services [Member] |  |  |  |  |  |  |  |
Information by business segment [Abstract] |  |  |  |  |  |  |  |
Revenues from third parties | 1,547.3 |  | 1,516.1 | 3,077.9 |  | 3,234.7 |  |
Revenues from related parties | 0 |  | 0 | 0 |  | 0 |  |
Intersegment and intrasegment revenues | 428.4 |  | 394.2 | 865.4 |  | 816.3 |  |
Total revenues | 1,975.7 |  | 1,910.3 | 3,943.3 |  | 4,051.0 |  |
Equity in income (loss) of unconsolidated affiliates | (6.5) |  | (5.9) | (6.1) |  | (9.3) |  |
Gross operating margin | 161.7 |  | 162.7 | 292.1 |  | 333.6 |  |
Property, plant and equipment, net (see Note 6) | 2,730.8 |  |  | 2,730.8 |  |  | 2,712.4 |
Investments in unconsolidated affiliates (see Note 7) | 74.9 |  |  | 74.9 |  |  | 70.4 |
Intangible assets, net (see Note 8) | 96.9 |  |  | 96.9 |  |  | 100.0 |
Goodwill (see Note 8) | 535.3 | [1] |  | 535.3 | [1] |  | 1,055.3 | [1]
Segment assets | 3,437.9 |  |  | 3,437.9 |  |  | 3,938.1 |
Adjustments and Eliminations [Member] |  |  |  |  |  |  |  |
Information by business segment [Abstract] |  |  |  |  |  |  |  |
Revenues from third parties | 0 |  | 0 | 0 |  | 0 |  |
Revenues from related parties | 0 |  | 0 | 0 |  | 0 |  |
Intersegment and intrasegment revenues | (9,684.3) |  | (5,750.7) | (16,844.7) |  | (11,164.7) |  |
Total revenues | (9,684.3) |  | (5,750.7) | (16,844.7) |  | (11,164.7) |  |
Equity in income (loss) of unconsolidated affiliates | 0 |  | 0 | 0 |  | 0 |  |
Gross operating margin | 0 |  | 0 | 0 |  | 0 |  |
Property, plant and equipment, net (see Note 6) | 1,463.0 |  |  | 1,463.0 |  |  | 2,655.5 |
Investments in unconsolidated affiliates (see Note 7) | 0 |  |  | 0 |  |  | 0 |
Intangible assets, net (see Note 8) | 0 |  |  | 0 |  |  | 0 |
Goodwill (see Note 8) | 0 |  |  | 0 |  |  | 0 |
Segment assets | $ 1,463.0 |  |  | $ 1,463.0 |  |  | $ 2,655.5 |
[1] | The total carrying amount of goodwill at June 30, 2014 and December 31, 2013 is net of $1.3 million of accumulated impairment charges. No goodwill impairment charges were recorded during the six months ended June 30, 2014.

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