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Summary of Significant Accounting Policies (Tables) | 12 Months Ended
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Dec. 31, 2014
Summary of Significant Accounting Policies [Abstract] |
Allowance for Doubtful Accounts Activity | The following table presents our allowance for doubtful accounts activity for the periods indicated:
|  | For the Year Ended December 31, |
|  | 2014 |  |  | 2013 |  |  | 2012 |
Balance at beginning of period |  | $ | 7.5 |  |  | $ | 13.2 |  |  | $ | 13.4 |
Charged to costs and expenses |  |  | 8.4 |  |  |  | 2.1 |  |  |  | 0.3 |
Deductions (1) |  |  | (2.0 | ) |  |  | (7.8 | ) |  |  | (0.5 | )
Balance at end of period |  | $ | 13.9 |  |  | $ | 7.5 |  |  | $ | 13.2 |
(1) The 2013 deduction is primarily due to the write-off of certain amounts attributable to companies in bankruptcy and amounts we believe are no longer collectible. |
Environmental Reserves Activity | The following table presents the activity of our environmental reserves for the periods indicated:
|  | For the Year Ended December 31, |
|  | 2014 |  |  | 2013 |  |  | 2012 |
Balance at beginning of period |  | $ | 9.9 |  |  | $ | 13.7 |  |  | $ | 12.3 |
Charged to costs and expenses |  |  | 11.9 |  |  |  | 3.9 |  |  |  | 13.9 |
Acquisition-related additions and other |  |  | 2.5 |  |  |  | 0.7 |  |  |  | 5.2 |
Deductions |  |  | (8.7 | ) |  |  | (8.4 | ) |  |  | (17.7 | )
Balance at end of period |  | $ | 15.6 |  |  | $ | 9.9 |  |  | $ | 13.7 |
Components of Other net | The following table presents the components of "Other, net" as presented on our Statements of Consolidated Operations for the periods indicated:
|  | For the Year Ended December 31, |
|  | 2014 |  |  | 2013 |  |  | 2012 |
Gain on sales of available-for-sale securities of Energy Transfer Equity (1) |  | $ | -- |  |  | $ | -- |  |  | $ | 68.8 |
Other |  |  | 0.6 |  |  |  | (1.1 | ) |  |  | 3.8 |
Total |  | $ | 0.6 |  |  | $ | (1.1 | ) |  | $ | 72.6 |
(1) See Note 9 for information regarding the liquidation of our investment in limited partnership units of Energy Transfer Equity. |

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- Definition Tabular disclosure of material changes in the expected aggregate amount of environmental loss contingencies since the prior balance sheet date. This element may be used for an entity's entire roll forward of environmental loss contingencies. + References No definition available. + Details
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- Definition Tabular disclosure of the detailed components of other nonoperating income. May include methodology, assumptions and amounts for: (a) dividends, (b) interest on securities, (c) profits on securities (net of losses), and (d) miscellaneous other income items. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.7) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 7 -Article 5 + Details
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