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Acquisitions, Discontinued Operations and Dispositions (Tables) | 6 Months Ended
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Jun. 30, 2018
Discontinued Operations and Disposal Groups [Abstract] |
Summary of results of discontinued operations and major classes of assets and liabilities | Summarized results of discontinued operations were as follows:
| Three months ended June 30, 2018 |  | Period from April 1, 2017 through June 14, 2017 |  | Six months ended June 30, 2018 |  | Period from January 1, 2017 through June 14, 2017
(In millions) |  |  |
Operating revenues | $ | — |  |  | $ | 265 |  |  | $ | — |  |  | $ | 646 |
Operating costs and expenses | — |  |  | (327 | ) |  | — |  |  | (700 | )
Other expenses | — |  |  | (54 | ) |  | — |  |  | (98 | )
Loss from operations of discontinued components, before tax | — |  |  | (116 | ) |  | — |  |  | (152 | )
Income tax expense | — |  |  | 8 |  |  | — |  |  | 9 |
Loss from operations of discontinued components | — |  |  | (124 | ) |  | — |  |  | (161 | )
Interest income - affiliate | 2 |  |  | 3 |  |  | 3 |  |  | 6 |
Loss from operations of discontinued components, net of tax | 2 |  |  | (121 | ) |  | 3 |  |  | (155 | )
Pre-tax loss on deconsolidation | — |  |  | (208 | ) |  | — |  |  | (208 | )
Settlement consideration and services credit | — |  |  | (289 | ) |  | — |  |  | (289 | )
Pension and post-retirement liability assumption | 1 |  |  | (119 | ) |  | 1 |  |  | (119 | )
Advisory and consulting fees | (1 | ) |  | (4 | ) |  | (2 | ) |  | (4 | )
Other | (27 | ) |  | — |  |  | (27 | ) |  | — |
Loss on disposal of discontinued components, net of tax | (27 | ) |  | (620 | ) |  | (28 | ) |  | (620 | )
Loss from discontinued operations, net of tax | $ | (25 | ) |  | $ | (741 | ) |  | $ | (25 | ) |  | $ | (775 | )

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- Definition Tabular disclosure of information related to a disposal group. Includes, but is not limited to, a discontinued operation, disposal classified as held-for-sale or disposed of by means other than sale or disposal of an individually significant component. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=65878427&loc=SL51721533-107759 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 4B -URI http://asc.fasb.org/extlink&oid=64827811&loc=SL51721665-107760 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=64827811&loc=d3e1474-107760 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=64827811&loc=d3e1361-107760 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=64827811&loc=SL51721683-107760 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 3A -URI http://asc.fasb.org/extlink&oid=84176398&loc=SL51724579-110230 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 5C -URI http://asc.fasb.org/extlink&oid=64827811&loc=SL51721675-107760 Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 4A -URI http://asc.fasb.org/extlink&oid=64827811&loc=SL51721663-107760 Reference 9: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=84176398&loc=d3e2941-110230 Reference 10: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 5B -URI http://asc.fasb.org/extlink&oid=64827811&loc=SL51721673-107760 Reference 11: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 3A -URI http://asc.fasb.org/extlink&oid=64827811&loc=SL51721659-107760 Reference 12: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 5A -URI http://asc.fasb.org/extlink&oid=64827811&loc=SL51721671-107760 Reference 13: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 5D -URI http://asc.fasb.org/extlink&oid=64827811&loc=SL51721677-107760 + Details
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