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Investments Investments (Tables) | 12 Months Ended
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Dec. 31, 2018
Investments [Abstract] |
Schedule of Equity Method Investments [Table Text Block] | Our investments primarily consist of equity investments where we hold significant influence over investee actions and for which we apply the equity method of accounting. As of December 31, 2018 and 2017, our investments consisted of the following (in millions):
| December 31,
| 2018 |  | 2017
Citrus Corporation | $ | 1,708 |  |  | $ | 1,698 |
SNG | 1,536 |  |  | 1,495 |
Ruby | 750 |  |  | 774 |
NGPL Holdings LLC | 733 |  |  | 687 |
Gulf LNG Holdings Group, LLC | 361 |  |  | 461 |
Plantation Pipe Line Company | 344 |  |  | 331 |
Utopia Holding LLC | 333 |  |  | 276 |
EagleHawk | 299 |  |  | 314 |
Gulf Coast Express Pipeline LLC | 240 |  |  | — |
MEP | 235 |  |  | 253 |
Red Cedar Gathering Company | 191 |  |  | 187 |
Watco Companies, LLC | 185 |  |  | 182 |
Double Eagle Pipeline LLC | 140 |  |  | 149 |
Liberty Pipeline Group LLC | 66 |  |  | 71 |
Bear Creek Storage | 65 |  |  | 63 |
Sierrita Gas Pipeline LLC | 55 |  |  | 55 |
Permian Highway Pipeline | 45 |  |  | — |
FEP | 44 |  |  | 112 |
All others | 151 |  |  | 190 |
Total investments | $ | 7,481 |  |  | $ | 7,298 |
Schedule of earnings from equity investments [Table Text Block] | Our earnings from equity investments were as follows (in millions):
| Year Ended December 31,
| 2018 |  | 2017 |  | 2016
Gulf LNG Holdings Group, LLC(a) | $ | 209 |  |  | $ | 47 |  |  | $ | 48 |
Citrus Corporation | 169 |  |  | 108 |  |  | 102 |
SNG | 141 |  |  | 77 |  |  | 58 |
NGPL Holdings LLC | 66 |  |  | 10 |  |  | 12 |
FEP | 55 |  |  | 53 |  |  | 51 |
Plantation Pipe Line Company | 55 |  |  | 46 |  |  | 37 |
Cortez Pipeline Company(b) | 36 |  |  | 44 |  |  | 24 |
MEP | 31 |  |  | 38 |  |  | 40 |
Ruby | 26 |  |  | 44 |  |  | 15 |
Watco Companies, LLC | 21 |  |  | 19 |  |  | 25 |
Red Cedar Gathering Company(c) | 18 |  |  | 14 |  |  | 24 |
Utopia Holding LLC | 14 |  |  | — |  |  | — |
Double Eagle Pipeline LLC | 10 |  |  | 7 |  |  | 5 |
Bear Creek Storage | 9 |  |  | 8 |  |  | 2 |
EagleHawk | 7 |  |  | 24 |  |  | 10 |
Liberty Pipeline Group LLC | 7 |  |  | 9 |  |  | 11 |
Sierrita Gas Pipeline LLC | 7 |  |  | 7 |  |  | 7 |
Gulf Coast Express LLC | 2 |  |  | — |  |  | — |
All others | 4 |  |  | 23 |  |  | 26 |
Total earnings from equity investments | $ | 887 |  |  | $ | 578 |  |  | $ | 497 |
Amortization of excess costs | (95 | ) |  | (61 | ) |  | (59 | )
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(a) | 2018 amount includes our share of earnings recognized due to a ruling by an arbitration panel affecting a customer contract.
(b) | 2017 and 2016 amounts include $(4) million and $9 million, respectively, representing our share of a non-cash impairment charge (pre-tax) recorded by Cortez Pipeline Company.
(c) | 2017 amount includes non-cash impairment charges of $10 million (pre-tax) related to our investment.
Summarized financial info of significant equity investment [Table Text Block] | Summarized combined financial information for our significant equity investments (listed or described above) is reported below (in millions; amounts represent 100% of investee financial information):
|  | Year Ended December 31,
Income Statement |  | 2018 |  | 2017 |  | 2016
Revenues |  | $ | 5,129 |  |  | $ | 4,703 |  |  | $ | 4,084 |
Costs and expenses |  | 3,371 |  |  | 3,398 |  |  | 3,056 |
Net income |  | $ | 1,758 |  |  | $ | 1,305 |  |  | $ | 1,028 |
|  | December 31,
Balance Sheet |  | 2018 |  | 2017
Current assets |  | $ | 1,496 |  |  | $ | 956 |
Non-current assets |  | 23,396 |  |  | 22,344 |
Current liabilities |  | 2,715 |  |  | 1,241 |
Non-current liabilities |  | 9,555 |  |  | 10,605 |
Partners’/owners’ equity |  | 12,622 |  |  | 11,454 |

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- Definition Tabular disclosure of equity method investments including, but not limited to, name of each investee or group of investments, percentage ownership, difference between recorded amount of an investment and the value of the underlying equity in the net assets, and summarized financial information. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=114001798&loc=d3e33918-111571 + Details
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