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Supplemental Cash Flow Information (Details) (USD $) In Millions, unless otherwise specified | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2014 | Jun. 30, 2013 | Dec. 31, 2013
Decrease (increase) in: |  |  |
Accounts receivable - trade | $ 80.3 | $ (312.6) |
Accounts receivable - related parties | (43.4) | (17.2) |
Inventories | (235.0) | (255.1) |
Prepaid and other current assets | (64.3) | (42.2) |
Other assets | 21.5 | 0.8 |
Increase (decrease) in: |  |  |
Accounts payable - trade | (32.5) | 35.3 |
Accounts payable - related parties | (36.5) | 15.0 |
Accrued product payables | (0.6) | 195.7 |
Accrued interest | 15.3 | 2.8 |
Other current liabilities | 90.0 | (16.5) |
Other liabilities | 6.6 | (15.2) |
Net effect of changes in operating accounts | (198.6) | (409.2) |
Liability for construction in progress expenditures | 264.2 |  | 205.3
Significant Acquisitions and Disposals [Line Items] |  |  |
Proceeds from asset sales and insurance recoveries | 113.2 | 199.2 |
Net gains (losses) attributable to asset sales and insurance recoveries | 96.4 | 58.2 |
Seminole Pipeline segment [Member] |  |  |
Significant Acquisitions and Disposals [Line Items] |  |  |
Proceeds from asset sales and insurance recoveries | 0 | 86.9 |
Net gains (losses) attributable to asset sales and insurance recoveries | 0 | 52.5 |
Chemical Trucking Assets [Member] |  |  |
Significant Acquisitions and Disposals [Line Items] |  |  |
Proceeds from asset sales and insurance recoveries | 0 | 29.5 |
Lubrication oil and specialty chemical distribution assets [Member] |  |  |
Significant Acquisitions and Disposals [Line Items] |  |  |
Proceeds from asset sales and insurance recoveries | 0 | 35.3 |
Net gains (losses) attributable to asset sales and insurance recoveries |  | 6.7 |
West Storage Facilities [Member] |  |  |
Significant Acquisitions and Disposals [Line Items] |  |  |
Proceeds from asset sales and insurance recoveries | 95.0 | 8.8 |
Net gains (losses) attributable to asset sales and insurance recoveries | 95.0 | 8.8 |
Other Disposal of Assets [Member] |  |  |
Significant Acquisitions and Disposals [Line Items] |  |  |
Proceeds from asset sales and insurance recoveries | 18.2 | 38.7 |
Net gains (losses) attributable to asset sales and insurance recoveries | $ 1.4 | $ (3.1) |

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