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Business Segments, Segment Reporting Information (Details) (USD $) In Millions, unless otherwise specified | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2013 | Jun. 30, 2012 | Jun. 30, 2013 | Jun. 30, 2012 | Dec. 31, 2012
Information by business segment [Abstract] |  |  |  |  |  |  |  |
Revenues from third parties | $ 11,142.6 |  | $ 9,764.2 | $ 22,519.8 |  | $ 20,985.9 |  |
Revenues from related parties | 6.7 |  | 25.6 | 12.6 |  | 56.4 |  |
Revenues | 11,149.3 |  | 9,789.8 | 22,532.4 |  | 21,042.3 |  |
Equity in income (loss) of unconsolidated affiliates | 37.6 |  | 11.3 | 82.1 |  | 21.2 |  |
Gross operating margin | 1,142.2 |  | 1,033.0 | 2,373.3 |  | 2,085.7 |  |
Property, plant and equipment, net (see Note 6) | 25,566.1 |  |  | 25,566.1 |  |  | 24,846.4 |
Investments in unconsolidated affiliates (see Note 7) | 1,938.8 |  |  | 1,938.8 |  |  | 1,394.6 |
Intangible assets, net: (see Note 8) | 1,513.2 |  |  | 1,513.2 |  |  | 1,566.8 |
Goodwill: (see Note 8) | 2,080.0 | [1] |  | 2,080.0 | [1] |  | 2,086.8 | [1]
Segment assets | 31,098.1 |  |  | 31,098.1 |  |  | 29,894.6 |
NGL Pipelines and Services [Member] |  |  |  |  |  |  |  |
Information by business segment [Abstract] |  |  |  |  |  |  |  |
Revenues from third parties | 3,504.7 |  | 3,327.9 | 7,455.4 |  | 7,682.0 |  |
Revenues from related parties | 0.2 |  | 4.6 | 0.5 |  | 5.0 |  |
Revenues | 3,504.9 |  | 3,332.5 | 7,455.9 |  | 7,687.0 |  |
Equity in income (loss) of unconsolidated affiliates | 3.8 |  | 3.8 | 7.7 |  | 9.0 |  |
Gross operating margin | 544.9 |  | 565.8 | 1,137.4 |  | 1,220.7 |  |
Property, plant and equipment, net (see Note 6) | 9,195.8 |  |  | 9,195.8 |  |  | 8,494.8 |
Investments in unconsolidated affiliates (see Note 7) | 515.5 |  |  | 515.5 |  |  | 324.6 |
Intangible assets, net: (see Note 8) | 301.5 |  |  | 301.5 |  |  | 320.6 |
Goodwill: (see Note 8) | 341.2 | [1] |  | 341.2 | [1] |  | 341.2 | [1]
Segment assets | 10,354.0 |  |  | 10,354.0 |  |  | 9,481.2 |
Onshore Natural Gas Pipelines And Services [Member] |  |  |  |  |  |  |  |
Information by business segment [Abstract] |  |  |  |  |  |  |  |
Revenues from third parties | 953.0 |  | 700.9 | 1,827.2 |  | 1,505.8 |  |
Revenues from related parties | 4.5 |  | 19.5 | 8.0 |  | 48.2 |  |
Revenues | 957.5 |  | 720.4 | 1,835.2 |  | 1,554.0 |  |
Equity in income (loss) of unconsolidated affiliates | 0.9 |  | 1.2 | 1.9 |  | 2.6 |  |
Gross operating margin | 197.7 |  | 175.8 | 388.5 |  | 382.0 |  |
Property, plant and equipment, net (see Note 6) | 8,925.8 |  |  | 8,925.8 |  |  | 8,950.1 |
Investments in unconsolidated affiliates (see Note 7) | 24.4 |  |  | 24.4 |  |  | 24.9 |
Intangible assets, net: (see Note 8) | 1,043.2 |  |  | 1,043.2 |  |  | 1,067.9 |
Goodwill: (see Note 8) | 296.3 | [1] |  | 296.3 | [1] |  | 296.3 | [1]
Segment assets | 10,289.7 |  |  | 10,289.7 |  |  | 10,339.2 |
Onshore Crude Oil Pipelines and Services [Member] |  |  |  |  |  |  |  |
Information by business segment [Abstract] |  |  |  |  |  |  |  |
Revenues from third parties | 5,129.5 |  | 4,188.7 | 9,922.7 |  | 8,662.3 |  |
Revenues from related parties | 0 |  | 0 | 0 |  | 0 |  |
Revenues | 5,129.5 |  | 4,188.7 | 9,922.7 |  | 8,662.3 |  |
Equity in income (loss) of unconsolidated affiliates | 30.1 |  | 3.6 | 66.7 |  | 4.1 |  |
Gross operating margin | 197.2 |  | 95.8 | 433.6 |  | 135.1 |  |
Property, plant and equipment, net (see Note 6) | 1,426.2 |  |  | 1,426.2 |  |  | 1,385.9 |
Investments in unconsolidated affiliates (see Note 7) | 783.1 |  |  | 783.1 |  |  | 493.8 |
Intangible assets, net: (see Note 8) | 5.2 |  |  | 5.2 |  |  | 5.9 |
Goodwill: (see Note 8) | 305.1 | [1] |  | 305.1 | [1] |  | 311.2 | [1]
Segment assets | 2,519.6 |  |  | 2,519.6 |  |  | 2,196.8 |
Offshore Pipelines And Services [Member] |  |  |  |  |  |  |  |
Information by business segment [Abstract] |  |  |  |  |  |  |  |
Revenues from third parties | 39.3 |  | 47.5 | 79.8 |  | 101.9 |  |
Revenues from related parties | 2.0 |  | 1.5 | 4.1 |  | 3.2 |  |
Revenues | 41.3 |  | 49.0 | 83.9 |  | 105.1 |  |
Equity in income (loss) of unconsolidated affiliates | 8.7 |  | 4.1 | 15.1 |  | 11.0 |  |
Gross operating margin | 39.7 |  | 38.3 | 80.2 |  | 90.4 |  |
Property, plant and equipment, net (see Note 6) | 1,277.6 |  |  | 1,277.6 |  |  | 1,343.0 |
Investments in unconsolidated affiliates (see Note 7) | 543.3 |  |  | 543.3 |  |  | 479.0 |
Intangible assets, net: (see Note 8) | 60.2 |  |  | 60.2 |  |  | 66.2 |
Goodwill: (see Note 8) | 82.1 | [1] |  | 82.1 | [1] |  | 82.1 | [1]
Segment assets | 1,963.2 |  |  | 1,963.2 |  |  | 1,970.3 |
Petrochemical and Refined Products Services [Member] |  |  |  |  |  |  |  |
Information by business segment [Abstract] |  |  |  |  |  |  |  |
Revenues from third parties | 1,516.1 |  | 1,499.2 | 3,234.7 |  | 3,033.9 |  |
Revenues from related parties | 0 |  | 0 | 0 |  | 0 |  |
Revenues | 1,516.1 |  | 1,499.2 | 3,234.7 |  | 3,033.9 |  |
Equity in income (loss) of unconsolidated affiliates | (5.9) |  | (1.4) | (9.3) |  | (7.9) |  |
Gross operating margin | 162.7 |  | 157.3 | 333.6 |  | 255.1 |  |
Property, plant and equipment, net (see Note 6) | 2,636.0 |  |  | 2,636.0 |  |  | 2,559.5 |
Investments in unconsolidated affiliates (see Note 7) | 72.5 |  |  | 72.5 |  |  | 72.3 |
Intangible assets, net: (see Note 8) | 103.1 |  |  | 103.1 |  |  | 106.2 |
Goodwill: (see Note 8) | 1,055.3 | [1] |  | 1,055.3 | [1] |  | 1,056.0 | [1]
Segment assets | 3,866.9 |  |  | 3,866.9 |  |  | 3,794.0 |
Other Investment [Member] |  |  |  |  |  |  |  |
Information by business segment [Abstract] |  |  |  |  |  |  |  |
Revenues from third parties | 0 |  | 0 | 0 |  | 0 |  |
Revenues from related parties | 0 |  | 0 | 0 |  | 0 |  |
Equity in income (loss) of unconsolidated affiliates | 0 |  | 0 | 0 |  | 2.4 |  |
Gross operating margin | 0 |  | 0 | 0 |  | 2.4 |  |
Property, plant and equipment, net (see Note 6) | 0 |  |  | 0 |  |  | 0 |
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 | 0 |  |  | 0 |  |  | 0 |
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 |  |
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) | 2,104.7 |  |  | 2,104.7 |  |  | 2,113.1 |
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 | 2,104.7 |  |  | 2,104.7 |  |  | 2,113.1 |
Operating Segments [Member] |  |  |  |  |  |  |  |
Information by business segment [Abstract] |  |  |  |  |  |  |  |
Revenues | 11,149.3 |  | 9,789.8 | 22,532.4 |  | 21,042.3 |  |
Operating Segments [Member] | NGL Pipelines and Services [Member] |  |  |  |  |  |  |  |
Information by business segment [Abstract] |  |  |  |  |  |  |  |
Revenues | 5,885.3 |  | 5,609.0 | 12,545.3 |  | 12,781.7 |  |
Operating Segments [Member] | Onshore Natural Gas Pipelines And Services [Member] |  |  |  |  |  |  |  |
Information by business segment [Abstract] |  |  |  |  |  |  |  |
Revenues | 1,212.4 |  | 899.4 | 2,346.3 |  | 1,956.7 |  |
Operating Segments [Member] | Onshore Crude Oil Pipelines and Services [Member] |  |  |  |  |  |  |  |
Information by business segment [Abstract] |  |  |  |  |  |  |  |
Revenues | 7,846.5 |  | 5,924.2 | 14,664.4 |  | 12,128.7 |  |
Operating Segments [Member] | Offshore Pipelines And Services [Member] |  |  |  |  |  |  |  |
Information by business segment [Abstract] |  |  |  |  |  |  |  |
Revenues | 45.5 |  | 50.7 | 90.1 |  | 110.1 |  |
Operating Segments [Member] | Petrochemical and Refined Products Services [Member] |  |  |  |  |  |  |  |
Information by business segment [Abstract] |  |  |  |  |  |  |  |
Revenues | 1,910.3 |  | 1,937.9 | 4,051.0 |  | 3,912.5 |  |
Operating Segments [Member] | Other Investment [Member] |  |  |  |  |  |  |  |
Information by business segment [Abstract] |  |  |  |  |  |  |  |
Revenues | 0 |  | 0 | 0 |  | 0 |  |
Operating Segments [Member] | Adjustments and Eliminations [Member] |  |  |  |  |  |  |  |
Information by business segment [Abstract] |  |  |  |  |  |  |  |
Revenues | (5,750.7) |  | (4,631.4) | (11,164.7) |  | (9,847.4) |  |
Intersegment Eliminations [Member] |  |  |  |  |  |  |  |
Information by business segment [Abstract] |  |  |  |  |  |  |  |
Revenues | 0 |  | 0 | 0 |  | 0 |  |
Intersegment Eliminations [Member] | NGL Pipelines and Services [Member] |  |  |  |  |  |  |  |
Information by business segment [Abstract] |  |  |  |  |  |  |  |
Revenues | (2,380.4) |  | (2,276.5) | (5,089.4) |  | (5,094.7) |  |
Intersegment Eliminations [Member] | Onshore Natural Gas Pipelines And Services [Member] |  |  |  |  |  |  |  |
Information by business segment [Abstract] |  |  |  |  |  |  |  |
Revenues | (254.9) |  | (179.0) | (511.1) |  | (402.7) |  |
Intersegment Eliminations [Member] | Onshore Crude Oil Pipelines and Services [Member] |  |  |  |  |  |  |  |
Information by business segment [Abstract] |  |  |  |  |  |  |  |
Revenues | (2,717.0) |  | (1,735.5) | (4,741.7) |  | (3,466.4) |  |
Intersegment Eliminations [Member] | Offshore Pipelines And Services [Member] |  |  |  |  |  |  |  |
Information by business segment [Abstract] |  |  |  |  |  |  |  |
Revenues | (4.2) |  | (1.7) | (6.2) |  | (5.0) |  |
Intersegment Eliminations [Member] | Petrochemical and Refined Products Services [Member] |  |  |  |  |  |  |  |
Information by business segment [Abstract] |  |  |  |  |  |  |  |
Revenues | (394.2) |  | (438.7) | (816.3) |  | (878.6) |  |
Intersegment Eliminations [Member] | Other Investment [Member] |  |  |  |  |  |  |  |
Information by business segment [Abstract] |  |  |  |  |  |  |  |
Revenues | 0 |  | 0 | 0 |  | 0 |  |
Intersegment Eliminations [Member] | Adjustments and Eliminations [Member] |  |  |  |  |  |  |  |
Information by business segment [Abstract] |  |  |  |  |  |  |  |
Revenues | $ (5,750.7) |  | $ (4,631.4) | $ (11,164.7) |  | $ (9,847.4) |  |
[1] | The total carrying amount of goodwill at June 30, 2013 and December 31, 2012 is net of $1.3 million of accumulated impairment charges. No goodwill impairment charges were recorded during the six months ended June 30, 2013.

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