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Income Taxes (Tables) | 12 Months Ended
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Dec. 31, 2018
Income Tax Disclosure [Abstract] |
Components of earnings from continuing operations before income taxes | The components of earnings from continuing operations before income taxes and the provision for (benefit from) income taxes from continuing operations were as follows:
|  | Years ended December 31,
|  | 2018 |  | 2017 |  | 2016
|  | (In thousands)
Earnings from continuing operations before income taxes: |  |  |  |  |  |
United States |  | $ | 356,644 |  |  | 254,355 |  |  | 344,614 |
Foreign |  | 17,217 |  |  | 60,190 |  |  | 62,642 |
Total |  | $ | 373,861 |  |  | 314,545 |  |  | 407,256 |
Current tax (benefit) expense from continuing operations: |  |  |  |  |  |
Federal (1) |  | $ | (23,333 | ) |  | 6,752 |  |  | 2,731 |
State |  | 6,862 |  |  | 9,360 |  |  | 7,713 |
Foreign |  | 10,123 |  |  | 6,442 |  |  | 6,411 |
|  | (6,348 | ) |  | 22,554 |  |  | 16,855 |
Deferred tax expense (benefit) from continuing operations: |  |  |  |  |  |
Federal |  | 110,408 |  |  | (510,172 | ) |  | 106,718 |
State |  | 313 |  |  | 8,080 |  |  | 16,299 |
Foreign |  | (6,119 | ) |  | 1,794 |  |  | 2,152 |
|  | 104,602 |  |  | (500,298 | ) |  | 125,169 |
Provision for (benefit from) income taxes from continuing operations |  | $ | 98,254 |  |  | (477,744 | ) |  | 142,024 |
_______________ (1) The 2018 current federal tax benefit includes the anticipated $22 million alternative minimum tax refunds (net of sequestration charge) generated by the 2017 Tax Cuts and Jobs Act.
Reconciliation of federal statutory tax rate with effective tax rate from continuing operations | A reconciliation of the federal statutory tax rate with the effective tax rate from continuing operations follows:
|  | Years ended December 31,
|  | 2018 |  | 2017 |  | 2016
|  | (Percentage of pre-tax earnings)
Federal statutory tax rate |  | 21.0 |  |  | 35.0 |  |  | 35.0 |
Impact of one-time deemed repatriation |  | 6.4 |  |  | 10.7 |  |  | — |
Impact on deferred taxes for changes in tax rates |  | (3.5 | ) |  | (196.4 | ) |  | (0.1 | )
Additional deferred tax adjustments |  | (1.6 | ) |  | — |  |  | — |
State income taxes, net of federal income tax benefit |  | 3.8 |  |  | 3.0 |  |  | 4.0 |
Foreign rates varying from federal statutory tax rate |  | 0.1 |  |  | (4.0 | ) |  | (3.3 | )
Tax contingencies |  | (1.1 | ) |  | (0.3 | ) |  | (0.2 | )
Other, net |  | 1.2 |  |  | 0.1 |  |  | (0.5 | )
Effective tax rate |  | 26.3 |  |  | (151.9 | ) |  | 34.9 |
Components of net deferred income tax liability | The components of the net deferred income tax liability were as follows:
|  | December 31,
|  | 2018 |  | 2017
|  | (In thousands)
Deferred income tax assets: |  |  |  |
Self-insurance accruals |  | $ | 82,042 |  |  | 75,198 |
Net operating loss carryforwards |  | 414,143 |  |  | 171,053 |
Alternative minimum taxes (1) |  | — |  |  | 22,552 |
Accrued compensation and benefits |  | 56,066 |  |  | 63,536 |
Federal benefit on state tax positions |  | 11,027 |  |  | 11,950 |
Pension benefits |  | 91,890 |  |  | 82,547 |
Miscellaneous other accruals |  | 20,760 |  |  | 19,608 |
|  | 675,928 |  |  | 446,444 |
Valuation allowance |  | (16,186 | ) |  | (18,667 | )
|  | 659,742 |  |  | 427,777 |
Deferred income tax liabilities: |  |  |  |
Property and equipment basis difference |  | (1,936,372 | ) |  | (1,614,963 | )
Other |  | (13,940 | ) |  | (16,857 | )
|  | (1,950,312 | ) |  | (1,631,820 | )
Net deferred income tax liability (2) |  | $ | (1,290,570 | ) |  | (1,204,043 | )
______________
(1) | The current and noncurrent portions of the AMT credit refunds were reclassified to "Prepaid expenses and other current assets" and "Direct financing leases and other assets" in 2018.
(2) | Deferred tax assets of $14 million and $7 million have been included in "Direct financing leases and other assets" at December 31, 2018 and 2017.
Summary of activity related to unrecognized tax benefits | The following table summarizes the activity related to unrecognized tax benefits (excluding the federal benefit received from state positions):
|  | December 31,
|  | 2018 |  | 2017 |  | 2016
|  | (In thousands)
Balance at January 1 |  | $ | 62,288 |  |  | 61,649 |  |  | 60,740 |
Additions based on tax positions related to the current year |  | 3,885 |  |  | 3,971 |  |  | 3,855 |
Reductions due to lapse of applicable statutes of limitation |  | (7,354 | ) |  | (3,332 | ) |  | (2,946 | )
Gross balance at December 31 |  | 58,819 |  |  | 62,288 |  |  | 61,649 |
Interest and penalties |  | 4,594 |  |  | 5,860 |  |  | 5,219 |
Balance at December 31 |  | $ | 63,413 |  |  | 68,148 |  |  | 66,868 |

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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://fasb.org/us-gaap/role/ref/legacyRef -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 for tax positions taken in the tax returns filed or to be filed for which it is more likely than not that the tax position will not be sustained upon examination by taxing authorities and other income tax contingencies. Includes, but is not limited to, interest and penalties, reconciliation of unrecognized tax benefits, unrecognized tax benefits that would affect the effective tax rate, tax years that remain subject to examination by tax jurisdictions, and information about positions for which it is reasonably possible that amounts unrecognized will significantly change within 12 months. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -URI http://asc.fasb.org/extlink&oid=84230637&loc=SL6600010-109319 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32718-109319 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 19 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32840-109319 + Details
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