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Business Acquisitions, Purchase Price Allocation (Details) - USD ($) $ in Millions | 9 Months Ended |  |
--- | --- | --- | ---
Sep. 30, 2015 | Jul. 02, 2015 | Dec. 31, 2014
Liabilities assumed in business combination: |  |  |
Goodwill | $ 5,749.2 |  | $ 4,300.2
EFS Midstream Contract with Producers [Member] |  |  |
Description of Business Combination: |  |  |
Contractual obligation | $ 270.0 |  |
Contract term (in years) | 10 years |  |
Eagle Ford Midstream Assets [Member] |  |  |
Consideration: |  |  |
Cash | $ 1,058.5 |  |
Accrued liability related to EFS Midstream acquisition | 997.7 |  |
Total consideration | 2,056.2 |  |
Indentifiable assets acquired in business combination: |  |  |
Current assets, including cash of $13.4 million |  | $ 64.0 |
Property, plant, and equipment |  | 636.0 |
Customer relationship intangible assets |  | 1,409.8 |
Total assets acquired |  | 2,109.8 |
Liabilities assumed in business combination: |  |  |
Current liabilities |  | (9.6) |
Long-term debt |  | (125.0) |
Other long-term liabilities |  | (1.3) |
Total liabilities assumed |  | (135.9) |
Total assets acquired less liabilities assumed |  | 1,973.9 |
Total consideration given for ownership interests in EFS Midstream | $ 2,056.2 |  |
Goodwill |  | 82.3 |
Description of Business Combination: |  |  |
Cash acquired |  | 13.4 |
Eagle Ford Midstream Assets [Member] | Pipelines and related equipment [Member] |  |  |
Indentifiable assets acquired in business combination: |  |  |
Property, plant, and equipment |  | 366.0 |
Eagle Ford Midstream Assets [Member] | Processing equipment [Member] |  |  |
Indentifiable assets acquired in business combination: |  |  |
Property, plant, and equipment |  | 112.0 |
Eagle Ford Midstream Assets [Member] | Electrical and metering equipment [Member] |  |  |
Indentifiable assets acquired in business combination: |  |  |
Property, plant, and equipment |  | 84.0 |
Eagle Ford Midstream Assets [Member] | Pumps and compressors [Member] |  |  |
Indentifiable assets acquired in business combination: |  |  |
Property, plant, and equipment |  | 42.0 |
Eagle Ford Midstream Assets [Member] | Other property, plant and equipment [Member] |  |  |
Indentifiable assets acquired in business combination: |  |  |
Property, plant, and equipment |  | $ 32.0 |
Eagle Ford Midstream Assets [Member] | Customer relationship intangibles [Member] |  |  |
Description of Business Combination: |  |  |
Intangible assets as a percent of total assets acquired (in hundredths) |  | 67.00% |
Cash flow projections discount rate (in hundredths) | 15.00% |  |

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