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Income taxes (Tables) | 12 Months Ended
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Dec. 31, 2016
Income Tax Disclosure [Abstract] |
Schedule of Income Before Income Taxes | Income before income taxes consisted of the following:
|  | Year ended December 31, |
|  | 2016 |  |  | 2015 |  |  | 2014 |
Domestic |  | $ | 1,144,544 |  |  | $ | 764,998 |  |  | $ | 1,341,208 |
International |  |  | 344,351 |  |  |  | (41,862 | ) |  |  | (31,535 | )
|  | $ | 1,488,895 |  |  | $ | 723,136 |  |  | $ | 1,309,673 |
Components of Income Tax Expense (benefit) | Income tax expense (benefit) consisted of the following:
|  | Year ended December 31, |
|  | 2016 |  |  | 2015 |  |  | 2014 |
Current: |  |  |  |  |  |  |  |  |  |  |  |
Federal |  | $ | 337,178 |  |  | $ | 183,263 |  |  | $ | 188,302 |
State |  |  | 48,771 |  |  |  | 30,766 |  |  |  | 30,789 |
International |  |  | 1,928 |  |  |  | 856 |  |  |  | 1,687 |
Total current income tax |  | $ | 387,877 |  |  | $ | 214,885 |  |  | $ | 220,778 |
Deferred: |  |  |  |  |  |  |  |  |  |  |  |
Federal |  |  | 93,214 |  |  |  | 88,718 |  |  |  | 192,267 |
State |  |  | (27,764 | ) |  |  | (8,307 | ) |  |  | 32,360 |
International |  |  | 2,486 |  |  |  | 430 |  |  |  | 938 |
Total deferred income tax |  | $ | 67,936 |  |  | $ | 80,841 |  |  | $ | 225,565 |
|  | $ | 455,813 |  |  | $ | 295,726 |  |  | $ | 446,343 |
Reconciliation between U.S. Federal Income Tax Rate and Effective Tax Rate | The reconciliation between the U.S. federal income tax rate and the Company’s effective tax rate is as follows:
|  | Year ended December 31, |
|  | 2016 |  |  | 2015 |  |  | 2014 |
Federal income tax rate |  |  | 35.0 | % |  |  | 35.0 | % |  |  | 35.0 | %
State income taxes, net of federal benefit |  |  | 1.2 |  |  |  | 2.5 |  |  |  | 3.5 |
International rate differential |  |  | 0.2 |  |  |  | (1.1 | ) |  |  | (0.2 | )
Gain on APAC JV ownership changes |  |  | (9.8 | ) |  |  | — |  |  |  | — |
Goodwill impairments |  |  | 6.7 |  |  |  | 11.7 |  |  |  | — |
Changes in deferred tax valuation allowances |  |  | 0.6 |  |  |  | 2.6 |  |  |  | 0.6 |
Other |  |  | 0.2 |  |  |  | 1.5 |  |  |  | (0.8 | )
Impact of noncontrolling interests primarily attributable to non-tax paying entities |  |  | (3.5 | ) |  |  | (11.3 | ) |  |  | (4.0 | )
Effective tax rate |  |  | 30.6 | % |  |  | 40.9 | % |  |  | 34.1 | %
Deferred Tax Assets and Liabilities Arising from Temporary Differences | Deferred tax assets and liabilities arising from temporary differences were as follows:
|  | December 31, |
|  | 2016 |  |  | 2015 |
Receivables |  | $ | 19,283 |  |  | $ | 43,393 |
Accrued liabilities |  |  | 318,596 |  |  |  | 272,080 |
Net operating loss carryforwards |  |  | 130,456 |  |  |  | 130,977 |
Other |  |  | 147,487 |  |  |  | 114,805 |
Deferred tax assets |  |  | 615,822 |  |  |  | 561,255 |
Valuation allowance |  |  | (56,016 | ) |  |  | (57,811 | )
Net deferred tax assets |  |  | 559,806 |  |  |  | 503,444 |
Intangible assets |  |  | (1,025,488 | ) |  |  | (927,761 | )
Property and equipment |  |  | (230,870 | ) |  |  | (205,071 | )
Investments in partnerships |  |  | (95,936 | ) |  |  | (83,584 | )
Other |  |  | (16,640 | ) |  |  | (13,990 | )
Deferred tax liabilities |  |  | (1,368,934 | ) |  |  | (1,230,406 | )
Net deferred tax liabilities |  | $ | (809,128 | ) |  | $ | (726,962 | )
Reconciliation of the Beginning and Ending Liability for Unrecognized Tax Benefits that Do Not Meet the More-Likely-than-not Threshold | A reconciliation of the beginning and ending liability for unrecognized tax benefits that do not meet the more-likely-than-not threshold were as follows:
|  | Year ended December 31, |
|  |  | 2016 |  |  |  | 2015 |
Beginning balance |  | $ | 39,011 |  |  | $ | 31,877 |
Additions for tax positions related to current year |  |  | 9,714 |  |  |  | 6,131 |
Additions for tax positions related to prior years |  |  | — |  |  |  | 2,999 |
Reductions related to lapse of applicable statute |  |  | (1,277 | ) |  |  | (1,996 | )
Reductions related to settlements with taxing authorities |  |  | (23,382 | ) |  |  | — |
Ending balance |  | $ | 24,066 |  |  | $ | 39,011 |

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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 income before income tax between domestic and foreign jurisdictions. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(h)(1)(i)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + 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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -URI http://asc.fasb.org/extlink&oid=65882285&loc=SL6600010-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32718-109319 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 19 -URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32840-109319 + Details
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