| Income Tax Disclosure [Abstract] | Period [Axis] |
|---|
2016-01-01 - 2016-12-31 |
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Income Tax Disclosure [Abstract] | |
Schedule of income before income tax, domestic and foreign | Income before income taxes included the following (in millions): | | | | | | | | | | | | | | Years ended December 31, | | 2016 | | 2015 | | 2014 | Domestic | $ | 4,478 |
| | $ | 3,532 |
| | $ | 1,456 |
| Foreign | 4,685 |
| | 4,446 |
| | 4,129 |
| Total income before income taxes | $ | 9,163 |
| | $ | 7,978 |
| | $ | 5,585 |
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Provision for income taxes | The provision for income taxes included the following (in millions): | | | | | | | | | | | | | | Years ended December 31, | | 2016 | | 2015 | | 2014 | Current provision: | | | | | | Federal | $ | 984 |
| | $ | 1,129 |
| | $ | 251 |
| State | 65 |
| | 40 |
| | 58 |
| Foreign | 176 |
| | 272 |
| | 194 |
| Total current provision | 1,225 |
| | 1,441 |
| | 503 |
| Deferred provision (benefit): | | | | | | Federal | 372 |
| | (290 | ) | | (22 | ) | State | (69 | ) | | (78 | ) | | (4 | ) | Foreign | (87 | ) | | (34 | ) | | (50 | ) | Total deferred provision (benefit) | 216 |
| | (402 | ) | | (76 | ) | Total provision | $ | 1,441 |
| | $ | 1,039 |
| | $ | 427 |
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Significant components of deferred tax assets and liabilities | Significant components of our deferred tax assets and liabilities were as follows (in millions): | | | | | | | | | | December 31, | | 2016 | | 2015 | Deferred income tax assets: | | | | NOL and credit carryforwards | $ | 688 |
| | $ | 620 |
| Expense accruals | 562 |
| | 706 |
| Expenses capitalized for tax | 255 |
| | 199 |
| Stock-based compensation | 167 |
| | 179 |
| Undistributed earnings of foreign subsidiaries | — |
| | 144 |
| Other | 117 |
| | 161 |
| Total deferred income tax assets | 1,789 |
| | 2,009 |
| Valuation allowance | (381 | ) | | (327 | ) | Net deferred income tax assets | 1,408 |
| | 1,682 |
| | | | | Deferred income tax liabilities: | | | | Acquired intangibles | (3,139 | ) | | (3,633 | ) | Debt | (345 | ) | | — |
| Other | (307 | ) | | (227 | ) | Total deferred income tax liabilities | (3,791 | ) | | (3,860 | ) | Total deferred income taxes, net | $ | (2,383 | ) | | $ | (2,178 | ) |
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Reconciliation of total gross amounts of unrecognized tax benefits (excluding interest, penalties, foreign tax credits and the federal tax benefit of state taxes related to unrecognized tax benefits) | The reconciliations of the total gross amounts of UTBs (excluding interest, penalties, foreign tax credits and the federal tax benefit of state taxes related to UTBs) were as follows (in millions): | | | | | | | | | | | | | | During the years ended December 31, | | 2016 | | 2015 | | 2014 | Balance at beginning of year | $ | 2,114 |
| | $ | 1,772 |
| | $ | 1,415 |
| Additions based on tax positions related to the current year | 425 |
| | 413 |
| | 379 |
| Additions based on tax positions related to prior years | 18 |
| | 9 |
| | 37 |
| Reductions for tax positions of prior years | (7 | ) | | (32 | ) | | (45 | ) | Reductions for expiration of statute of limitations | — |
| | — |
| | (12 | ) | Settlements | (7 | ) | | (48 | ) | | (2 | ) | Balance at end of year | $ | 2,543 |
| | $ | 2,114 |
| | $ | 1,772 |
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Reconciliation between the federal statutory tax rate and effective tax rate | The reconciliations between the federal statutory tax rate applied to income before income taxes and our effective tax rate were as follows: | | | | | | | | | | | Years ended December 31, | | 2016 | | 2015 | | 2014 | Federal statutory tax rate | 35.0 | % | | 35.0 | % | | 35.0 | % | Foreign earnings, including earnings invested indefinitely | (15.5 | )% | | (18.1 | )% | | (22.4 | )% | Credits, Puerto Rico Excise Tax | (2.3 | )% | | (2.5 | )% | | (4.4 | )% | Share-based payments | (1.3 | )% | | — | % | | — | % | Credits, primarily federal R&D | (0.7 | )% | | (1.4 | )% | | (1.5 | )% | State taxes | 0.1 | % | | 0.1 | % | | 0.7 | % | Audit settlements (federal, state, foreign) | — | % | | (0.5 | )% | | — | % | Other, net | 0.4 | % | | 0.4 | % | | 0.2 | % | Effective tax rate | 15.7 | % | | 13.0 | % | | 7.6 | % |
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