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Income Taxes (Tables) | 12 Months Ended
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Dec. 31, 2016
Income Tax Disclosure [Abstract] |
Schedule of Components of Income Tax Expense | Income tax expense (benefit) includes the following components:
|  | Federal |  | State |  | Foreign |  | Total
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 |
2015 |  |  |  |  |  |  |  |
Current |  | $ | 95,046 |  |  | 16,973 |  |  | 147,174 |  |  | 259,193 |
Deferred |  | 17,631 |  |  | 368 |  |  | — |  |  | 17,999 |
|  | $ | 112,677 |  |  | 17,341 |  |  | 147,174 |  |  | 277,192 |
2014 |  |  |  |  |  |  |  |
Current |  | $ | 93,345 |  |  | 17,093 |  |  | 127,567 |  |  | 238,005 |
Deferred |  | (6,023 | ) |  | (553 | ) |  | — |  |  | (6,576 | )
|  | $ | 87,322 |  |  | 16,540 |  |  | 127,567 |  |  | 231,429 |
Schedule of Effective Income Tax Rate Reconciliation | Income tax expense differs from amounts computed by applying the United States Federal income tax rate of 35% to earnings before income taxes as a result of the following:
|  | 2016 |  | 2015 |  | 2014
Computed “expected” tax expense |  | $ | 240,400 |  |  | 257,841 |  |  | 213,811 |
Increase in income taxes resulting from: |  |  |  |  |  |
State income taxes, net of Federal income tax benefit |  | 9,759 |  |  | 11,272 |  |  | 10,751 |
Nondeductible stock compensation expense, net |  | 3,629 |  |  | 5,241 |  |  | 8,069 |
Other, net |  | 535 |  |  | 2,838 |  |  | (1,202 | )
|  | $ | 254,323 |  |  | 277,192 |  |  | 231,429 |
Schedule of U.S. and Foreign Components of Income Before Income Tax Expense/(Benefit) | The components of earnings before income taxes are as follows:
|  | 2016 |  | 2015 |  | 2014
United States |  | $ | 243,754 |  |  | 236,932 |  |  | 211,588 |
Foreign |  | 443,102 |  |  | 499,757 |  |  | 399,301 |
|  | $ | 686,856 |  |  | 736,689 |  |  | 610,889 |
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, |  | 2016 |  | 2015
Deferred Tax Assets: |  |  |  |
Accrued third party obligations, deductible for taxes upon economic performance |  | $ | 15,153 |  |  | 14,473 |
Provision for doubtful accounts receivable |  | 497 |  |  | 1,041 |
Excess of financial statement over tax depreciation |  | 10,650 |  |  | 10,349 |
Deductible stock compensation expense, net |  | 21,758 |  |  | 18,910 |
Foreign currency translation adjustment |  | 57,207 |  |  | 44,519 |
Retained liability for cargo claims |  | 1,178 |  |  | 1,350 |
Total gross deferred tax assets |  | 106,443 |  |  | 90,642 |
Deferred Tax Liabilities: |  |  |  |
Unremitted foreign earnings, net of related foreign tax credits |  | 120,170 |  |  | 100,170 |
Total gross deferred tax liabilities |  | $ | 120,170 |  |  | 100,170 |
Net deferred tax liabilities |  | $ | 13,727 |  |  | 9,528 |

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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=65882285&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=65882285&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=65882285&loc=d3e32687-109319 + Details
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