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Business Combinations (Tables) | 12 Months Ended
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Dec. 31, 2017
Business Combinations [Abstract] |
Allocation of Total Purchase Prices Paid in Connection with Business Combinations | The following table presents the final fair value allocation of assets acquired and liabilities assumed in the Azure acquisition at April 30, 2017.
Assets acquired in business combination: |  |  |
Current assets |  | $ | 3.1 |
Property, plant and equipment |  |  | 193.1 |
Total assets acquired |  |  | 196.2 |
Liabilities assumed in business combination: |  |  |  |
Current liabilities |  |  | 1.4 |
Long-term liabilities |  |  | 3.4 |
Total liabilities assumed |  |  | 4.8 |
Cash used for Azure acquisition |  | $ | 191.4 |
Unaudited Pro Forma Earnings Information | Since the effective date of the EFS Midstream acquisition was July 1, 2015, our Statements of Consolidated Operations do not reflect any earnings from this business prior to this date. Our consolidated revenues and net income for the last six months ended December 31, 2015 include $117.8 million and $59.9 million, respectively, from EFS Midstream. The following table presents selected unaudited pro forma earnings information for the year ended December 31, 2015 as if the acquisition had been completed on January 1, 2015. This pro forma information was prepared using historical financial data for EFS Midstream and reflects certain estimates and assumptions made by our management. Our unaudited pro forma financial information is not necessarily indicative of what our consolidated financial results would have been for the year ended December 31, 2015 had we acquired EFS Midstream on January 1, 2015.
Pro forma earnings data: |  |  |
Revenues |  | $ | 27,148.5 |
Costs and expenses |  |  | 23,937.1 |
Operating income |  |  | 3,585.0 |
Net income |  |  | 2,594.4 |
Net income attributable to noncontrolling interests |  |  | 37.2 |
Net income attributable to limited partners |  |  | 2,557.2 |
Basic earnings per unit: |  |  |  |
As reported basic earnings per unit |  | $ | 1.28 |
Pro forma basic earnings per unit |  | $ | 1.30 |
Diluted earnings per unit: |  |  |  |
As reported diluted earnings per unit |  | $ | 1.26 |
Pro forma diluted earnings per unit |  | $ | 1.28 |

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- Definition Tabular disclosure of a material business combination completed during the period, including background, timing, and recognized assets and liabilities. This table does not include leveraged buyouts. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=79982066&loc=d3e1486-128463 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463 + Details
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