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Income Taxes (Tables) | 12 Months Ended
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Dec. 31, 2018
Income Tax Disclosure [Abstract] |
Schedule of Components of Income Tax Expense | Income tax expense (benefit) includes the following components:
|  | Federal |  | State |  | Foreign |  | Total
2018 |  |  |  |  |  |  |  |
Current |  | $ | 45,996 |  |  | 13,262 |  |  | 151,312 |  |  | 210,570 |
Deferred |  | (9,759 | ) |  | (2,272 | ) |  | — |  |  | (12,031 | )
|  | $ | 36,237 |  |  | 10,990 |  |  | 151,312 |  |  | 198,539 |
2017 |  |  |  |  |  |  |  |
Current |  | $ | 101,821 |  |  | 20,490 |  |  | 149,596 |  |  | 271,907 |
Deferred |  | (42,474 | ) |  | (1,221 | ) |  | — |  |  | (43,695 | )
|  | $ | 59,347 |  |  | 19,269 |  |  | 149,596 |  |  | 228,212 |
2016 |  |  |  |  |  |  |  |
Current |  | $ | 85,330 |  |  | 16,082 |  |  | 137,076 |  |  | 238,488 |
Deferred |  | 16,903 |  |  | (1,068 | ) |  | — |  |  | 15,835 |
|  | $ | 102,233 |  |  | 15,014 |  |  | 137,076 |  |  | 254,323 |
Schedule of Effective Income Tax Rate Reconciliation | Income tax expense differs from amounts computed by applying the United States Federal income tax rate of 21% in 2018 and 35% in 2017 and 2016 when compared to earnings before income taxes as a result of the following:
|  | 2018 |  | 2017 |  | 2016
Computed “expected” tax expense |  | $ | 171,849 |  |  | 251,508 |  |  | 240,400 |
Increase (decrease) in income taxes resulting from: |  |  |  |  |  |
Effect of foreign taxes |  | 19,008 |  |  | (25,374 | ) |  | — |
State income taxes, net of Federal income tax benefit |  | 8,682 |  |  | 12,525 |  |  | 9,759 |
Nondeductible executive compensation |  | 3,126 |  |  | — |  |  | — |
Stock compensation expense, net |  | (3,860 | ) |  | 63 |  |  | 3,629 |
Enactment of 2017 Tax Act |  | — |  |  | (13,894 | ) |  | — |
Other, net |  | (266 | ) |  | 3,384 |  |  | 535 |
|  | $ | 198,539 |  |  | 228,212 |  |  | 254,323 |
Schedule of U.S. and Foreign Components of Income Before Income Tax Expense/(Benefit) | The components of earnings before income taxes are as follows:
|  | 2018 |  | 2017 |  | 2016
United States |  | $ | 313,178 |  |  | 276,714 |  |  | 243,754 |
Foreign |  | 505,151 |  |  | 441,881 |  |  | 443,102 |
|  | $ | 818,329 |  |  | 718,595 |  |  | 686,856 |
Schedule of Deferred Tax Assets and Liabilities | The tax effects of temporary differences and tax credits that give rise to significant portions of deferred tax assets and deferred tax liabilities are as follows:
Years ended December 31, |  | 2018 |  | 2017
Deferred Tax Assets: |  |  |  |
Accrued third party obligations, deductible for taxes upon economic performance |  | $ | 7,726 |  |  | 8,075 |
Provision for doubtful accounts receivable |  | 1,443 |  |  | 628 |
Excess of financial statement over tax depreciation |  | 5,134 |  |  | 4,804 |
Deductible stock compensation expense, net |  | 19,011 |  |  | 17,326 |
Foreign currency translation adjustments |  | 37,299 |  |  | 24,448 |
Retained liability for cargo claims |  | 1,025 |  |  | 1,062 |
Total gross deferred tax assets |  | 71,638 |  |  | 56,343 |
Deferred Tax Liabilities: |  |  |  |
Unremitted foreign earnings, net of related foreign tax credits |  | 31,173 |  |  | 43,136 |
Total gross deferred tax liabilities |  | 31,173 |  |  | 43,136 |
Net deferred tax assets |  | $ | 40,465 |  |  | 13,207 |

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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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