| Income Tax Disclosure [Abstract] | Period [Axis] |
|---|
2016-01-01 - 2016-12-31 |
|---|
Income Tax Disclosure [Abstract] | |
Schedule of earnings before income taxes | Earnings Before Income Tax Expense | | | | | | | | | | | | | years ended December 31 (in millions) | 2016 |
| 2015 |
| 2014 | Domestic | $ | (1,651 | ) | | $ | (1,038 | ) | | $ | (3,245 | ) | Foreign | 9,535 |
| | 7,683 |
| | 5,614 |
| Total earnings before income tax expense | $ | 7,884 |
| | $ | 6,645 |
| | $ | 2,369 |
|
|
Schedule of income tax expense | Income Tax Expense | | | | | | | | | | | | | years ended December 31 (in millions) | 2016 | | 2015 | | 2014 | Current | | | | | | Domestic | $ | 2,229 |
| | $ | 1,036 |
| | $ | 634 |
| Foreign | 498 |
| | 313 |
| | 341 |
| Total current taxes | $ | 2,727 |
| | $ | 1,349 |
| | $ | 975 |
| Deferred | | | | | | Domestic | $ | (792 | ) | | $ | 141 |
| | $ | (301 | ) | Foreign | (4 | ) | | 11 |
| | (79 | ) | Total deferred taxes | $ | (796 | ) | | $ | 152 |
| | $ | (380 | ) | Total income tax expense | $ | 1,931 |
| | $ | 1,501 |
| | $ | 595 |
|
|
Summary of effective tax rate reconciliation | Effective Tax Rate Reconciliation | | | | | | | | | | years ended December 31 | 2016 |
| 2015 |
| 2014 | Statutory tax rate | 35.0 | % | | 35.0 | % | | 35.0 | % | Effect of foreign operations | (10.3 | ) | | (9.4 | ) | | (11.3 | ) | U.S. tax credits | (4.4 | ) | | (4.5 | ) | | (8.9 | ) | Branded prescription drug fee | 0.5 |
| | 0.7 |
| | 3.7 |
| Tax law change related to foreign currency | 2.4 |
| | — |
| | — |
| Valuation allowances | — |
| | (1.6 | ) | | 3.6 |
| All other, net | 1.3 |
| | 2.4 |
| | 3.0 |
| Effective tax rate | 24.5 | % | | 22.6 | % | | 25.1 | % |
|
Schedule of deferred tax assets and liabilities | Deferred Tax Assets and Liabilities | | | | | | | | | as of December 31 (in millions) | 2016 | | 2015 | Deferred tax assets | | | | Compensation and employee benefits | $ | 665 |
| | $ | 584 |
| Accruals and reserves | 378 |
| | 368 |
| Chargebacks and rebates | 473 |
| | 472 |
| Deferred revenue | 391 |
| | 372 |
| Depreciation | 24 |
| | 45 |
| Net operating losses and other credit carryforwards | 151 |
| | 282 |
| Other | 71 |
| | 316 |
| Total deferred tax assets | 2,153 |
| | 2,439 |
| Valuation allowances | (76 | ) | | (70 | ) | Total net deferred tax assets | 2,077 |
| | 2,369 |
| Deferred tax liabilities | | | | Excess of book basis over tax basis of intangible assets | (5,375 | ) | | (4,459 | ) | Excess of book basis over tax basis in investments | (3,367 | ) | | (2,958 | ) | Total deferred tax liabilities | (8,742 | ) | | (7,417 | ) | Net deferred tax liabilities | $ | (6,665 | ) | | $ | (5,048 | ) |
|
Schedule of unrecognized tax benefits | Unrecognized Tax Benefits | | | | | | | | | | | | | years ended December 31 (in millions) | 2016 | | 2015 | | 2014 | Balance as of January 1 | $ | 954 |
| | $ | 421 |
| | $ | 247 |
| Increase due to current year tax positions | 118 |
| | 187 |
| | 115 |
| Increase due to prior year tax positions | 111 |
| | 369 |
| | 67 |
| Decrease due to prior year tax positions | (7 | ) | | (15 | ) | | (6 | ) | Lapse of statutes of limitations | (8 | ) | | (8 | ) | | (2 | ) | Balance as of December 31 | $ | 1,168 |
| | $ | 954 |
| | $ | 421 |
|
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