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Income Tax Expense (Tables) | 12 Months Ended
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Dec. 31, 2017
Income Tax Disclosure [Abstract] |
Schedule of Federal and State Components of Income Tax Expense (Benefit) | The components of the federal and state income tax expense (benefit) are summarized as follows:
| Year Ended December 31, 2017 |  | Year Ended December 31, 2016 |  | Year Ended December 31, 2015
| (in millions)
Current: |  |  |  |  |  |  |  |
Federal | $ | — |  |  | $ | (65 | ) |  | $ | (3 | )
State | 2 |  |  | 1 |  |  | 1 |
Total current income tax expense | 2 |  |  | (64 | ) |  | (2 | )
Deferred: |  |  |  |  |  |
Federal | (302 | ) |  | (12 | ) |  | 12 |
State | (6 | ) |  | 4 |  |  | 19 |
Total deferred tax expense (benefit) | (308 | ) |  | (8 | ) |  | 31 |
Net income tax expense (benefit) | $ | (306 | ) |  | $ | (72 | ) |  | $ | 29 |
Schedule of Effective Income Tax Rate Reconciliation | A reconciliation of income tax expense at the U.S. federal statutory rate to net income tax expense (benefit) is as follows:
| Year Ended December 31, 2017 |  | Year Ended December 31, 2016 |  | Year Ended December 31, 2015
| (in millions)
Tax at statutory federal rate of 35 percent | $ | 7 |  |  | $ | (6 | ) |  | $ | 65 |
Partnership earnings not subject to tax | (126 | ) |  | (127 | ) |  | (55 | )
Goodwill impairment | 36 |  |  | 55 |  |  | — |
Revaluation of investments in affiliates | — |  |  | — |  |  | 9 |
State and local tax, net of federal benefit | (6 | ) |  | 4 |  |  | 1 |
Statutory rate change | (225 | ) |  | — |  |  | 8 |
Other | 8 |  |  | 2 |  |  | 1 |
Net income tax expense (benefit) | $ | (306 | ) |  | $ | (72 | ) |  | $ | 29 |
Schedule of Principal Components of Deferred Tax Assets (Liabilities) | Deferred taxes result from the temporary differences between financial reporting carrying amounts and the tax basis of existing assets and liabilities. Principal components of deferred tax assets and liabilities are as follows:
| December 31, 2017 |  | December 31, 2016
| (in millions)
Deferred tax assets: |  |  |  |  |
Environmental, asset retirement obligations, and other reserves | $ | 20 |  |  | $ | 28 |
Inventories | (1 | ) |  | 12 |
Net operating loss carry forwards | 79 |  |  | 92 |
Other | 78 |  |  | 61 |
Total deferred tax assets | 176 |  |  | 193 |
Deferred tax liabilities: |  |  |
Fixed assets | 324 |  |  | 506 |
Trademarks and other intangibles | 169 |  |  | 272 |
Investments in affiliates | 72 |  |  | 58 |
Total deferred tax liabilities | 565 |  |  | 836 |
Net deferred income tax liabilities | $ | 389 |  |  | $ | 643 |

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- Definition Tabular disclosure of the components of income tax expense attributable to continuing operations for each year presented including, but not limited to: current tax expense (benefit), deferred tax expense (benefit), investment tax credits, government grants, the benefits of operating loss carryforwards, tax expense that results from allocating certain tax benefits either directly to contributed capital or to reduce goodwill or other noncurrent intangible assets of an acquired entity, adjustments of a deferred tax liability or asset for enacted changes in tax laws or rates or a change in the tax status of the entity, and adjustments of the beginning-of-the-year balances of a valuation allowance because of a change in circumstances that causes a change in judgment about the realizability of the related deferred tax asset in future years. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32639-109319 + Details
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- Definition Tabular disclosure of the components of net deferred tax asset or liability recognized in an entity's statement of financial position, including the following: the total of all deferred tax liabilities, the total of all deferred tax assets, the total valuation allowance recognized for deferred tax assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32537-109319 + Details
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- Definition Tabular disclosure of the reconciliation using percentage or dollar amounts of the reported amount of income tax expense attributable to continuing operations for the year to the amount of income tax expense that would result from applying domestic federal statutory tax rates to pretax income from continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32687-109319 + Details
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