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Intangible Assets and Goodwill (Tables) | 9 Months Ended
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Sep. 30, 2013
Intangible Assets and Goodwill [Abstract] |
Intangible Assets by Segment |
|  | September 30, 2013 |  |  | December 31, 2012 |
|  | Gross Value |  |  | Accumulated Amortization |  |  | Carrying Value |  |  | Gross Value |  |  | Accumulated Amortization |  |  | Carrying Value |
NGL Pipelines & Services: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Customer relationship intangibles |  | $ | 340.8 |  |  | $ | (161.3 | ) |  | $ | 179.5 |  |  | $ | 340.8 |  |  | $ | (147.6 | ) |  | $ | 193.2 |
Contract-based intangibles |  |  | 281.3 |  |  |  | (166.9 | ) |  |  | 114.4 |  |  |  | 284.6 |  |  |  | (157.2 | ) |  |  | 127.4 |
Segment total |  |  | 622.1 |  |  |  | (328.2 | ) |  |  | 293.9 |  |  |  | 625.4 |  |  |  | (304.8 | ) |  |  | 320.6 |
Onshore Natural Gas Pipelines & Services: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Customer relationship intangibles |  |  | 1,163.6 |  |  |  | (273.8 | ) |  |  | 889.8 |  |  |  | 1,163.6 |  |  |  | (250.0 | ) |  |  | 913.6 |
Contract-based intangibles |  |  | 466.1 |  |  |  | (326.0 | ) |  |  | 140.1 |  |  |  | 466.1 |  |  |  | (311.8 | ) |  |  | 154.3 |
Segment total |  |  | 1,629.7 |  |  |  | (599.8 | ) |  |  | 1,029.9 |  |  |  | 1,629.7 |  |  |  | (561.8 | ) |  |  | 1,067.9 |
Onshore Crude Oil Pipelines & Services: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Customer relationship intangibles |  |  | 10.7 |  |  |  | (5.9 | ) |  |  | 4.8 |  |  |  | 10.7 |  |  |  | (4.9 | ) |  |  | 5.8 |
Contract-based intangibles |  |  | 0.4 |  |  |  | (0.3 | ) |  |  | 0.1 |  |  |  | 0.4 |  |  |  | (0.3 | ) |  |  | 0.1 |
Segment total |  |  | 11.1 |  |  |  | (6.2 | ) |  |  | 4.9 |  |  |  | 11.1 |  |  |  | (5.2 | ) |  |  | 5.9 |
Offshore Pipelines & Services: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Customer relationship intangibles |  |  | 203.9 |  |  |  | (147.3 | ) |  |  | 56.6 |  |  |  | 203.9 |  |  |  | (138.5 | ) |  |  | 65.4 |
Contract-based intangibles |  |  | 1.2 |  |  |  | (0.4 | ) |  |  | 0.8 |  |  |  | 1.2 |  |  |  | (0.4 | ) |  |  | 0.8 |
Segment total |  |  | 205.1 |  |  |  | (147.7 | ) |  |  | 57.4 |  |  |  | 205.1 |  |  |  | (138.9 | ) |  |  | 66.2 |
Petrochemical & Refined Products Services: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Customer relationship intangibles |  |  | 104.3 |  |  |  | (37.1 | ) |  |  | 67.2 |  |  |  | 104.3 |  |  |  | (33.4 | ) |  |  | 70.9 |
Contract-based intangibles |  |  | 39.9 |  |  |  | (5.6 | ) |  |  | 34.3 |  |  |  | 41.2 |  |  |  | (5.9 | ) |  |  | 35.3 |
Segment total |  |  | 144.2 |  |  |  | (42.7 | ) |  |  | 101.5 |  |  |  | 145.5 |  |  |  | (39.3 | ) |  |  | 106.2 |
Total all segments |  | $ | 2,612.2 |  |  | $ | (1,124.6 | ) |  | $ | 1,487.6 |  |  | $ | 2,616.8 |  |  | $ | (1,050.0 | ) |  | $ | 1,566.8 |
Amortization Expense of Intangible Assets by Segment |
|  | For the Three Months Ended September 30, |  |  | For the Nine Months Ended September 30, |
|  | 2013 |  |  | 2012 |  |  | 2013 |  |  | 2012 |
NGL Pipelines & Services |  | $ | 8.6 |  |  | $ | 10.1 |  |  | $ | 27.7 |  |  | $ | 29.9 |
Onshore Natural Gas Pipelines & Services |  |  | 13.3 |  |  |  | 16.8 |  |  |  | 38.0 |  |  |  | 48.4 |
Onshore Crude Oil Pipelines & Services |  |  | 0.3 |  |  |  | 0.2 |  |  |  | 1.0 |  |  |  | 0.5 |
Offshore Pipelines & Services |  |  | 2.9 |  |  |  | 3.1 |  |  |  | 8.8 |  |  |  | 8.3 |
Petrochemical & Refined Products Services |  |  | 1.5 |  |  |  | 2.1 |  |  |  | 4.7 |  |  |  | 8.8 |
Total |  | $ | 26.6 |  |  | $ | 32.3 |  |  | $ | 80.2 |  |  | $ | 95.9 |
Forecasted Amortization Expense |
Remainder of 2013 |  |  | 2014 |  |  | 2015 |  |  | 2016 |  |  | 2017 |
$ | 25.5 |  |  | $ | 96.3 |  |  | $ | 90.4 |  |  | $ | 92.1 |  |  | $ | 96.1 |
Changes in Carrying Amount of Goodwill |
|  | NGL Pipelines & Services |  |  | Onshore Natural Gas Pipelines & Services |  |  | Onshore Crude Oil Pipelines & Services |  |  | Offshore Pipelines & Services |  |  | Petrochemical & Refined Products Services |  |  | Consolidated Total |
Balance at December 31, 2012 (1) |  | $ | 341.2 |  |  | $ | 296.3 |  |  | $ | 311.2 |  |  | $ | 82.1 |  |  | $ | 1,056.0 |  |  | $ | 2,086.8 |
Goodwill related to the sale of assets |  |  | -- |  |  |  | -- |  |  |  | (6.1 | ) |  |  | -- |  |  |  | (0.7 | ) |  |  | (6.8 | )
Balance at September 30, 2013 (1) |  | $ | 341.2 |  |  | $ | 296.3 |  |  | $ | 305.1 |  |  | $ | 82.1 |  |  | $ | 1,055.3 |  |  | $ | 2,080.0 |
(1) The total carrying amount of goodwill at September 30, 2013 and December 31, 2012 is net of $1.3 million of accumulated impairment charges. No goodwill impairment charges were recorded during the nine months ended September 30, 2013. |

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- Definition Tabular disclosure of amortizable finite and indefinite lived intangibles assets by segment, including the gross carrying amount and accumulated amortization. A major class is composed of intangible assets that can be grouped together because they are similar, either by their nature or by their use in the operations of a company. + References No definition available. + Details
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- Definition Tabular disclosure of the amount of amortization expense expected to be recorded in succeeding fiscal years for finite-lived intangible assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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