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Property, Plant and Equipment (Details) (USD $) In Millions, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
Property, plant and equipment and accumulated depreciation [Abstract] |  |  |  |  |  |
Property, plant and equipment, gross | $ 30,955.4 |  | $ 27,429.6 |  |  |
Less accumulated depreciation | 6,109.0 |  | 5,238.0 |  |  |
Property, plant and equipment, net | 24,846.4 |  | 22,191.6 |  | 19,332.9 |
Summary of depreciation expense and capitalized interest [Abstract] |  |  |  |  |  |
Depreciation expense | 900.5 | [1] | 776.6 | [1] | 745.7 | [1]
Capitalized interest | 116.8 | [2] | 106.7 | [2] | 47.2 | [2]
Asset Retirement Obligations [Roll Forward] |  |  |  |  |  |
ARO liability balance, December 31, | 112.0 |  | 97.1 |  |  |
Liabilities incurred during period | 1.7 |  | 0.7 |  |  |
Liabilities settled during period | (27.8) |  | (7.3) |  |  |
Revisions in estimated cash flows | 13.7 |  | 15.0 |  |  |
Accretion expense | 5.6 |  | 6.5 |  |  |
ARO liability balance, December 31, | 105.2 |  | 112.0 |  | 97.1 |
Capitalized costs, asset retirement costs | 40.3 |  | 37.7 |  |  |
Forecasted accretion expense [Abstract] |  |  |  |  |  |
Forecast accretion expense - 2013 | 6.2 |  |  |  |  |
Forecast accretion expense - 2014 | 6.5 |  |  |  |  |
Forecast accretion expense - 2015 | 6.3 |  |  |  |  |
Forecast accretion expense - 2016 | 6.6 |  |  |  |  |
Forecast accretion expense - 2017 | 7.1 |  |  |  |  |
Plants, pipelines and facilities [Member] |  |  |  |  |  |
Property, plant and equipment and accumulated depreciation [Abstract] |  |  |  |  |  |
Property, plant and equipment, gross | 25,382.4 | [3],[4] | 22,354.4 | [3],[4] |  |
Plants, pipelines and facilities [Member] | Minimum [Member] |  |  |  |  |  |
Property, plant and equipment and accumulated depreciation [Abstract] |  |  |  |  |  |
Estimated useful life | 3 years | [3],[4] |  |  |  |
Plants, pipelines and facilities [Member] | Maximum [Member] |  |  |  |  |  |
Property, plant and equipment and accumulated depreciation [Abstract] |  |  |  |  |  |
Estimated useful life | 45 years | [3],[4] |  |  |  |
Underground and other storage facilities [Member] |  |  |  |  |  |
Property, plant and equipment and accumulated depreciation [Abstract] |  |  |  |  |  |
Property, plant and equipment, gross | 1,826.3 | [5],[6] | 1,388.6 | [5],[6] |  |
Underground and other storage facilities [Member] | Minimum [Member] |  |  |  |  |  |
Property, plant and equipment and accumulated depreciation [Abstract] |  |  |  |  |  |
Estimated useful life | 5 years | [5],[6] |  |  |  |
Underground and other storage facilities [Member] | Maximum [Member] |  |  |  |  |  |
Property, plant and equipment and accumulated depreciation [Abstract] |  |  |  |  |  |
Estimated useful life | 40 years | [5],[6] |  |  |  |
Platforms and facilities [Member] |  |  |  |  |  |
Property, plant and equipment and accumulated depreciation [Abstract] |  |  |  |  |  |
Property, plant and equipment, gross | 635.2 | [7] | 637.5 | [7] |  |
Platforms and facilities [Member] | Minimum [Member] |  |  |  |  |  |
Property, plant and equipment and accumulated depreciation [Abstract] |  |  |  |  |  |
Estimated useful life | 20 years | [7] |  |  |  |
Platforms and facilities [Member] | Maximum [Member] |  |  |  |  |  |
Property, plant and equipment and accumulated depreciation [Abstract] |  |  |  |  |  |
Estimated useful life | 31 years | [7] |  |  |  |
Transportation equipment [Member] |  |  |  |  |  |
Property, plant and equipment and accumulated depreciation [Abstract] |  |  |  |  |  |
Property, plant and equipment, gross | 136.2 | [8] | 151.5 | [8] |  |
Transportation equipment [Member] | Minimum [Member] |  |  |  |  |  |
Property, plant and equipment and accumulated depreciation [Abstract] |  |  |  |  |  |
Estimated useful life | 3 years | [8] |  |  |  |
Transportation equipment [Member] | Maximum [Member] |  |  |  |  |  |
Property, plant and equipment and accumulated depreciation [Abstract] |  |  |  |  |  |
Estimated useful life | 10 years | [8] |  |  |  |
Marine vessels [Member] |  |  |  |  |  |
Property, plant and equipment and accumulated depreciation [Abstract] |  |  |  |  |  |
Property, plant and equipment, gross | 695.0 | [9] | 615.9 | [9] |  |
Marine vessels [Member] | Minimum [Member] |  |  |  |  |  |
Property, plant and equipment and accumulated depreciation [Abstract] |  |  |  |  |  |
Estimated useful life | 15 years | [9] |  |  |  |
Marine vessels [Member] | Maximum [Member] |  |  |  |  |  |
Property, plant and equipment and accumulated depreciation [Abstract] |  |  |  |  |  |
Estimated useful life | 30 years | [9] |  |  |  |
Land [Member] |  |  |  |  |  |
Property, plant and equipment and accumulated depreciation [Abstract] |  |  |  |  |  |
Property, plant and equipment, gross | 167.2 |  | 136.1 |  |  |
Construction in progress [Member] |  |  |  |  |  |
Property, plant and equipment and accumulated depreciation [Abstract] |  |  |  |  |  |
Property, plant and equipment, gross | $ 2,113.1 |  | $ 2,145.6 |  |  |
Processing plants [Member] | Minimum [Member] |  |  |  |  |  |
Property, plant and equipment and accumulated depreciation [Abstract] |  |  |  |  |  |
Estimated useful life | 20 years |  |  |  |  |
Processing plants [Member] | Maximum [Member] |  |  |  |  |  |
Property, plant and equipment and accumulated depreciation [Abstract] |  |  |  |  |  |
Estimated useful life | 35 years |  |  |  |  |
Pipelines and related equipment [Member] | Minimum [Member] |  |  |  |  |  |
Property, plant and equipment and accumulated depreciation [Abstract] |  |  |  |  |  |
Estimated useful life | 5 years |  |  |  |  |
Pipelines and related equipment [Member] | Maximum [Member] |  |  |  |  |  |
Property, plant and equipment and accumulated depreciation [Abstract] |  |  |  |  |  |
Estimated useful life | 45 years |  |  |  |  |
Terminal facilities [Member] | Minimum [Member] |  |  |  |  |  |
Property, plant and equipment and accumulated depreciation [Abstract] |  |  |  |  |  |
Estimated useful life | 10 years |  |  |  |  |
Terminal facilities [Member] | Maximum [Member] |  |  |  |  |  |
Property, plant and equipment and accumulated depreciation [Abstract] |  |  |  |  |  |
Estimated useful life | 35 years |  |  |  |  |
Office furniture and equipment [Member] | Minimum [Member] |  |  |  |  |  |
Property, plant and equipment and accumulated depreciation [Abstract] |  |  |  |  |  |
Estimated useful life | 3 years |  |  |  |  |
Office furniture and equipment [Member] | Maximum [Member] |  |  |  |  |  |
Property, plant and equipment and accumulated depreciation [Abstract] |  |  |  |  |  |
Estimated useful life | 20 years |  |  |  |  |
Buildings [Member] | Minimum [Member] |  |  |  |  |  |
Property, plant and equipment and accumulated depreciation [Abstract] |  |  |  |  |  |
Estimated useful life | 20 years |  |  |  |  |
Buildings [Member] | Maximum [Member] |  |  |  |  |  |
Property, plant and equipment and accumulated depreciation [Abstract] |  |  |  |  |  |
Estimated useful life | 40 years |  |  |  |  |
Laboratory and shop equipment [Member] | Minimum [Member] |  |  |  |  |  |
Property, plant and equipment and accumulated depreciation [Abstract] |  |  |  |  |  |
Estimated useful life | 5 years |  |  |  |  |
Laboratory and shop equipment [Member] | Maximum [Member] |  |  |  |  |  |
Property, plant and equipment and accumulated depreciation [Abstract] |  |  |  |  |  |
Estimated useful life | 35 years |  |  |  |  |
Underground storage facilities [Member] | Minimum [Member] |  |  |  |  |  |
Property, plant and equipment and accumulated depreciation [Abstract] |  |  |  |  |  |
Estimated useful life | 5 years |  |  |  |  |
Underground storage facilities [Member] | Maximum [Member] |  |  |  |  |  |
Property, plant and equipment and accumulated depreciation [Abstract] |  |  |  |  |  |
Estimated useful life | 35 years |  |  |  |  |
Storage tanks [Member] | Minimum [Member] |  |  |  |  |  |
Property, plant and equipment and accumulated depreciation [Abstract] |  |  |  |  |  |
Estimated useful life | 10 years |  |  |  |  |
Storage tanks [Member] | Maximum [Member] |  |  |  |  |  |
Property, plant and equipment and accumulated depreciation [Abstract] |  |  |  |  |  |
Estimated useful life | 40 years |  |  |  |  |
Water wells [Member] | Minimum [Member] |  |  |  |  |  |
Property, plant and equipment and accumulated depreciation [Abstract] |  |  |  |  |  |
Estimated useful life | 5 years |  |  |  |  |
Water wells [Member] | Maximum [Member] |  |  |  |  |  |
Property, plant and equipment and accumulated depreciation [Abstract] |  |  |  |  |  |
Estimated useful life | 35 years |  |  |  |  |
[1] | Depreciation expense is a component of "Costs and expenses" as presented on our Statements of Consolidated Operations.
[2] | We capitalize interest cost incurred on funds used to construct property, plant and equipment. The capitalized interest cost is recorded as part of the asset to which it relates and is amortized over the asset's estimated useful life as a component of depreciation expense. See Note 20 for information regarding cash payments for interest.
[3] | In general, the estimated useful lives of major assets within this category are: processing plants, 20-35 years; pipelines and related equipment, 5-45 years; terminal facilities, 10-35 years; office furniture and equipment, 3-20 years; buildings, 20-40 years; and laboratory and shop equipment, 5-35 years.
[4] | Plants and pipelines include processing plants; NGL, natural gas, crude oil and petrochemical and refined products pipelines; terminal loading and unloading facilities; office furniture and equipment; buildings; laboratory and shop equipment and related assets.
[5] | In general, the estimated useful lives of assets within this category are: underground storage facilities, 5-35 years; storage tanks, 10-40 years; and water wells, 5-35 years.
[6] | Underground and other storage facilities include underground product storage caverns; above ground storage tanks; water wells and related assets.
[7] | Platforms and facilities include offshore platforms and related facilities and other associated assets located in the Gulf of Mexico.
[8] | Transportation equipment includes tractor-trailer tank trucks and other vehicles and similar assets used in our operations.
[9] | Marine vessels include tow boats, barges and related equipment used in our marine transportation business.

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- Definition Amount, net of accumulated depreciation, depletion and amortization, of long-lived physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 8 -Article 7 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 12 -Paragraph 5 -Subparagraph b, c -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.13) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 13 -Subparagraph a -Article 5 + Details
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- Definition Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment. + References No definition available. + Details
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