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Business Segments, Consolidated Revenues and Expenses (Details) (USD $) In Millions, unless otherwise specified | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2014 | Sep. 30, 2013 | Sep. 30, 2014 | Sep. 30, 2013
Consolidated Revenues [Abstract] |  |  |  |  |  |  |  |
Total consolidated revenues | $ 12,330.2 |  | $ 12,093.3 |  | $ 37,760.9 |  | $ 34,625.7 |
Operating costs and expenses: |  |  |  |  |  |  |  |
Cost of sales | 10,455.1 | [1] | 10,371.3 | [1] | 32,213.1 | [1] | 29,522.1 | [1]
Other operating costs and expenses | 633.9 | [2] | 612.0 | [2] | 1,865.6 | [2] | 1,702.4 | [2]
Depreciation, amortization and accretion | 322.7 |  | 285.2 |  | 936.5 |  | 851.7 |
Net gains attributable to asset sales and insurance recoveries | (2.6) |  | (10.2) |  | (99.0) |  | (68.4) |
Non-cash asset impairment charges | 5.7 |  | 15.2 |  | 18.2 |  | 53.3 |
General and administrative costs | 50.0 |  | 43.9 |  | 150.9 |  | 138.9 |
Total consolidated costs and expenses | 11,464.8 |  | 11,317.4 |  | 35,085.3 |  | 32,200.0 |
NGL Pipelines and Services [Member] |  |  |  |  |  |  |  |
Operating costs and expenses: |  |  |  |  |  |  |  |
Non-cash asset impairment charges | 1.2 |  | 0.3 |  | 6.6 |  | 10.0 |
Onshore Natural Gas Pipelines and Services [Member] |  |  |  |  |  |  |  |
Operating costs and expenses: |  |  |  |  |  |  |  |
Non-cash asset impairment charges | 0.4 |  | 0 |  | 0.7 |  | 0 |
Onshore Crude Oil Pipelines and Services [Member] |  |  |  |  |  |  |  |
Operating costs and expenses: |  |  |  |  |  |  |  |
Non-cash asset impairment charges | 0.4 |  | 0 |  | 2.2 |  | 16.6 |
Offshore Pipelines And Services [Member] |  |  |  |  |  |  |  |
Operating costs and expenses: |  |  |  |  |  |  |  |
Non-cash asset impairment charges | 0 |  | 13.2 |  | 0 |  | 13.2 |
Petrochemical and Refined Products Services [Member] |  |  |  |  |  |  |  |
Operating costs and expenses: |  |  |  |  |  |  |  |
Non-cash asset impairment charges | 3.7 |  | 1.7 |  | 8.7 |  | 13.5 |
Reportable Business Segments [Member] | NGL Pipelines and Services [Member] |  |  |  |  |  |  |  |
Consolidated Revenues [Abstract] |  |  |  |  |  |  |  |
Sales of NGLs and related products | 3,603.4 |  | 3,929.8 |  | 12,029.8 |  | 10,831.3 |
Midstream services | 423.3 |  | 300.9 |  | 1,197.6 |  | 855.3 |
Total consolidated revenues | 4,026.7 |  | 4,230.7 |  | 13,227.4 |  | 11,686.6 |
Reportable Business Segments [Member] | Onshore Natural Gas Pipelines and Services [Member] |  |  |  |  |  |  |  |
Consolidated Revenues [Abstract] |  |  |  |  |  |  |  |
Sales of natural gas | 775.5 |  | 590.7 |  | 2,515.7 |  | 1,954.1 |
Midstream services | 256.4 |  | 244.8 |  | 761.8 |  | 716.6 |
Total consolidated revenues | 1,031.9 |  | 835.5 |  | 3,277.5 |  | 2,670.7 |
Reportable Business Segments [Member] | Onshore Crude Oil Pipelines and Services [Member] |  |  |  |  |  |  |  |
Consolidated Revenues [Abstract] |  |  |  |  |  |  |  |
Sales of crude oil | 5,348.2 |  | 5,359.7 |  | 16,003.5 |  | 15,159.9 |
Midstream services | 88.9 |  | 77.8 |  | 264.2 |  | 200.3 |
Total consolidated revenues | 5,437.1 |  | 5,437.5 |  | 16,267.7 |  | 15,360.2 |
Reportable Business Segments [Member] | Offshore Pipelines And Services [Member] |  |  |  |  |  |  |  |
Consolidated Revenues [Abstract] |  |  |  |  |  |  |  |
Sales of natural gas | 0 |  | 0.1 |  | 0.2 |  | 0.3 |
Sales of crude oil | 2.5 |  | 1.5 |  | 7.5 |  | 3.7 |
Midstream services | 40.0 |  | 38.0 |  | 110.7 |  | 119.5 |
Total consolidated revenues | 42.5 |  | 39.6 |  | 118.4 |  | 123.5 |
Reportable Business Segments [Member] | Petrochemical and Refined Products Services [Member] |  |  |  |  |  |  |  |
Consolidated Revenues [Abstract] |  |  |  |  |  |  |  |
Sales of petrochemicals and refined products | 1,605.4 |  | 1,390.1 |  | 4,338.2 |  | 4,271.5 |
Midstream services | 186.6 |  | 159.9 |  | 531.7 |  | 513.2 |
Total consolidated revenues | $ 1,792.0 |  | $ 1,550.0 |  | $ 4,869.9 |  | $ 4,784.7 |
[1] | Cost of sales is a component of “Operating costs and expenses” as presented on our Unaudited Condensed Statements of Consolidated Operations. Period-to-period fluctuations in these amounts are primarily due to changes in energy commodity prices and sales volumes associated with our marketing activities.
[2] | Represents cost of operating our plants, pipelines and other fixed assets, excluding depreciation, amortization and accretion charges.

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