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Income Taxes (Tables) | 12 Months Ended
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Dec. 31, 2013
Income Tax Disclosure [Abstract] |
Schedule of components of the income tax expense from continuing operations | The components of the income tax expense from continuing operations are as follows:
| Successor |  |  | Predecessor
| Year Ended December 31, 2013 |  | Year Ended December 31, 2012 |  | Nine Months Ended December 31, 2011 |  |  | Three Months Ended March 31, 2011
| (Dollars in millions)
Income tax expense: |  |  |  |  |  |  |  |
Current tax provision: |  |  |  |  |  |  |  |
Federal and foreign | $ | 653 |  |  | 638 |  |  | 173 |  |  |  | 104 |
State and local | 101 |  |  | 105 |  |  | 26 |  |  |  | 11 |
Total current tax provision | 754 |  |  | 743 |  |  | 199 |  |  |  | 115 |
Deferred tax expense (benefit): |  |  |  |  |  |  |  |
Federal and foreign | (125 | ) |  | (175 | ) |  | 128 |  |  |  | 61 |
State and local | (27 | ) |  | (26 | ) |  | 22 |  |  |  | 15 |
Total deferred tax expense (benefit) | (152 | ) |  | (201 | ) |  | 150 |  |  |  | 76 |
Income tax expense | $ | 602 |  |  | 542 |  |  | 349 |  |  |  | 191 |
Schedule of effective income tax rate for continuing operations that differs from the statutory tax rate | The effective income tax rate for continuing operations differs from the statutory tax rate as follows:
| Successor |  |  | Predecessor
| Year Ended December 31, 2013 |  | Year Ended December 31, 2012 |  | Nine Months Ended December 31, 2011 |  |  | Three Months Ended March 31, 2011
| (in percent)
Effective income tax rate: |  |  |  |  |  |  |  |
Federal statutory income tax rate | 35.0 | % |  | 35.0 | % |  | 35.0 | % |  |  | 35.0 | %
State income taxes-net of federal effect | 3.1 |  |  | 3.7 |  |  | 3.5 |  |  |  | 3.4 |
Other | 0.3 |  |  | 0.3 |  |  | 0.6 |  |  |  | 0.6 |
Effective income tax rate | 38.4 | % |  | 39.0 | % |  | 39.1 | % |  |  | 39.0 | %
Schedule of components of the deferred tax assets and liabilities | The components of the deferred tax assets and liabilities are as follows:
| Successor
| December 31, 2013 |  | December 31, 2012
| (Dollars in millions)
Deferred tax assets and liabilities: |  |  |
Deferred tax liabilities: |  |  |
Property, plant and equipment | $ | (1,281 | ) |  | (1,179 | )
Intangibles assets | (1,772 | ) |  | (2,118 | )
Receivable from an affiliate due to pension plan participation | (462 | ) |  | (397 | )
Other | (52 | ) |  | (61 | )
Total deferred tax liabilities | (3,567 | ) |  | (3,755 | )
Deferred tax assets: |  |  |
Payable to affiliate due to post-retirement benefit plan participation | 983 |  |  | 982 |
Debt premiums | 55 |  |  | 67 |
Other | 229 |  |  | 253 |
Total deferred tax assets | 1,267 |  |  | 1,302 |
Valuation allowance on deferred tax assets | (12 | ) |  | (12 | )
Net deferred tax assets | 1,255 |  |  | 1,290 |
Net deferred tax liabilities | $ | (2,312 | ) |  | (2,465 | )

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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=6907707&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=6907707&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=6907707&loc=d3e32687-109319 + Details
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