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Intangible Assets and Goodwill, Goodwill (Details) (USD $) In Millions, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
Changes in carrying amount of goodwill [Roll Forward] |  |  |  |  |  |
Balance at beginning of period | $ 2,086.8 | [1] | $ 2,092.3 | [1] | $ 2,107.7 | [1]
Goodwill adjustment |  |  |  |  | (0.6) | [2]
Goodwill related to the sale of assets | (6.8) |  |  |  | (14.8) | [3]
Reclassification to assets held for sale |  |  | (5.5) |  |  |
Balance at end of period | 2,080.0 | [1] | 2,086.8 | [1] | 2,092.3 | [1]
Accumulated impairment charges | 1.3 |  |  |  |  |
NGL Pipelines & Services [Member] |  |  |  |  |  |
Changes in carrying amount of goodwill [Roll Forward] |  |  |  |  |  |
Balance at beginning of period | 341.2 | [1] | 341.2 | [1] | 341.2 | [1]
Goodwill adjustment |  |  |  |  | 0 | [2]
Goodwill related to the sale of assets | 0 |  |  |  | 0 | [3]
Reclassification to assets held for sale |  |  | 0 |  |  |
Balance at end of period | 341.2 | [1] | 341.2 | [1] | 341.2 | [1]
Onshore Natural Gas Pipelines & Services [Member] |  |  |  |  |  |
Changes in carrying amount of goodwill [Roll Forward] |  |  |  |  |  |
Balance at beginning of period | 296.3 | [1] | 296.3 | [1] | 311.1 | [1]
Goodwill adjustment |  |  |  |  | 0 | [2]
Goodwill related to the sale of assets | 0 |  |  |  | (14.8) | [3]
Reclassification to assets held for sale |  |  | 0 |  |  |
Balance at end of period | 296.3 | [1] | 296.3 | [1] | 296.3 | [1]
Onshore Crude Oil Pipelines & Services [Member] |  |  |  |  |  |
Changes in carrying amount of goodwill [Roll Forward] |  |  |  |  |  |
Balance at beginning of period | 311.2 | [1] | 311.2 | [1] | 311.2 | [1]
Goodwill adjustment |  |  |  |  | 0 | [2]
Goodwill related to the sale of assets | (6.1) |  |  |  | 0 | [3]
Reclassification to assets held for sale |  |  | 0 |  |  |
Balance at end of period | 305.1 | [1] | 311.2 | [1] | 311.2 | [1]
Offshore Pipelines & Services [Member] |  |  |  |  |  |
Changes in carrying amount of goodwill [Roll Forward] |  |  |  |  |  |
Balance at beginning of period | 82.1 | [1] | 82.1 | [1] | 82.1 | [1]
Goodwill adjustment |  |  |  |  | 0 | [2]
Goodwill related to the sale of assets | 0 |  |  |  | 0 | [3]
Reclassification to assets held for sale |  |  | 0 |  |  |
Balance at end of period | 82.1 | [1] | 82.1 | [1] | 82.1 | [1]
Petrochemical & Refined Products Services [Member] |  |  |  |  |  |
Changes in carrying amount of goodwill [Roll Forward] |  |  |  |  |  |
Balance at beginning of period | 1,056.0 | [1] | 1,061.5 | [1] | 1,062.1 | [1]
Goodwill adjustment |  |  |  |  | (0.6) | [2]
Goodwill related to the sale of assets | (0.7) |  |  |  | 0 | [3]
Reclassification to assets held for sale |  |  | (5.5) |  |  |
Balance at end of period | $ 1,055.3 | [1] | $ 1,056.0 | [1] | $ 1,061.5 | [1]
[1] | The total carrying amount of goodwill at December 31, 2010 is net of $1.3 million of accumulated impairment charges incurred prior to 2010. No goodwill impairment charges were recorded during the three years ended December 31, 2013.
[2] | The goodwill we recorded in connection with a marine business acquisition completed in November 2010 was subsequently reduced in May 2011 due to a purchase price adjustment.
[3] | In December 2011, we disposed of our ownership interests in Crystal (see Note 8), including related goodwill.

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- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=14024403&loc=d3e13816-109267 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266 + Details
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- Definition Amount of accumulated impairment loss for an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a,h) -URI http://asc.fasb.org/extlink&oid=14024403&loc=d3e13816-109267 + Details
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- Definition Amount of other (increase) decrease of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=14024403&loc=d3e13816-109267 + Details
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- Definition Amount of increase (decrease) from adjustments after acquisition date under purchase accounting of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=14024403&loc=d3e13816-109267 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 25 -Paragraph 16 -URI http://asc.fasb.org/extlink&oid=21917927&loc=d3e961-128460 + Details
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- Definition Amount of divestiture of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=14024403&loc=d3e13816-109267 + Details
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