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Business Segments, Consolidated Revenues and Expenses (Details) (USD $) In Millions, unless otherwise specified | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2014 | Jun. 30, 2013 | Jun. 30, 2014 | Jun. 30, 2013
Consolidated Revenues [Abstract] |  |  |  |  |  |  |  |
Total consolidated revenues | $ 12,520.8 |  | $ 11,149.3 |  | $ 25,430.7 |  | $ 22,532.4 |
Operating costs and expenses: |  |  |  |  |  |  |  |
Cost of sales | 10,705.3 | [1] | 9,458.3 | [1] | 21,758.0 | [1] | 19,150.8 | [1]
Other operating costs and expenses | 624.5 | [2] | 586.4 | [2] | 1,231.7 | [2] | 1,090.4 | [2]
Depreciation, amortization and accretion | 312.4 |  | 289.7 |  | 613.8 |  | 566.5 |
Net losses (gains) attributable to asset sales and insurance recoveries | (6.8) |  | 5.7 |  | (96.4) |  | (58.2) |
Non-cash asset impairment charges | 3.7 |  | 27.1 |  | 12.5 |  | 38.1 |
General and administrative costs | 47.7 |  | 45.5 |  | 100.9 |  | 95.0 |
Total consolidated costs and expenses | 11,686.8 |  | 10,412.7 |  | 23,620.5 |  | 20,882.6 |
NGL Pipelines and Services [Member] |  |  |  |  |  |  |  |
Consolidated Revenues [Abstract] |  |  |  |  |  |  |  |
Sales of NGLs and related products | 3,630.6 |  | 3,235.9 |  | 8,426.4 |  | 6,901.5 |
Midstream services | 390.6 |  | 269.0 |  | 774.3 |  | 554.4 |
Total consolidated revenues | 4,021.2 |  | 3,504.9 |  | 9,200.7 |  | 7,455.9 |
Operating costs and expenses: |  |  |  |  |  |  |  |
Non-cash asset impairment charges | 2.8 |  | 8.7 |  | 5.4 |  | 9.7 |
Onshore Natural Gas Pipelines and Services [Member] |  |  |  |  |  |  |  |
Consolidated Revenues [Abstract] |  |  |  |  |  |  |  |
Sales of natural gas | 787.0 |  | 723.9 |  | 1,740.2 |  | 1,363.4 |
Midstream services | 254.0 |  | 233.6 |  | 505.4 |  | 471.8 |
Total consolidated revenues | 1,041.0 |  | 957.5 |  | 2,245.6 |  | 1,835.2 |
Operating costs and expenses: |  |  |  |  |  |  |  |
Non-cash asset impairment charges | 0.1 |  | 0 |  | 0.3 |  | 0 |
Onshore Crude Oil Pipelines and Services [Member] |  |  |  |  |  |  |  |
Consolidated Revenues [Abstract] |  |  |  |  |  |  |  |
Sales of crude oil | 5,781.9 |  | 5,057.4 |  | 10,655.3 |  | 9,800.2 |
Midstream services | 90.4 |  | 72.1 |  | 175.3 |  | 122.5 |
Total consolidated revenues | 5,872.3 |  | 5,129.5 |  | 10,830.6 |  | 9,922.7 |
Operating costs and expenses: |  |  |  |  |  |  |  |
Non-cash asset impairment charges | 0.8 |  | 16.6 |  | 1.8 |  | 16.6 |
Offshore Pipelines And Services [Member] |  |  |  |  |  |  |  |
Consolidated Revenues [Abstract] |  |  |  |  |  |  |  |
Sales of natural gas | 0 |  | 0.1 |  | 0.2 |  | 0.2 |
Sales of crude oil | 2.9 |  | (0.1) |  | 5.0 |  | 2.2 |
Midstream services | 36.1 |  | 41.3 |  | 70.7 |  | 81.5 |
Total consolidated revenues | 39.0 |  | 41.3 |  | 75.9 |  | 83.9 |
Petrochemical and Refined Products Services [Member] |  |  |  |  |  |  |  |
Consolidated Revenues [Abstract] |  |  |  |  |  |  |  |
Sales of petrochemicals and refined products | 1,376.6 |  | 1,334.2 |  | 2,732.8 |  | 2,881.4 |
Midstream services | 170.7 |  | 181.9 |  | 345.1 |  | 353.3 |
Total consolidated revenues | 1,547.3 |  | 1,516.1 |  | 3,077.9 |  | 3,234.7 |
Operating costs and expenses: |  |  |  |  |  |  |  |
Non-cash asset impairment charges | $ 0 |  | $ 1.8 |  | $ 5.0 |  | $ 11.8 |
[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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