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Revenues (Revenues by Product and by Geographic Area) (Details) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2018 USD ($) segment | Mar. 31, 2017 USD ($)
Revenue from External Customer [Line Items] |  |
Number of operating segments | segment | 1 |
Total product sales | $ 5,343 | $ 5,199
Other revenues | 211 | 265
Total revenues | 5,554 | 5,464
Hedging gains | 34 | 57
US [Member] |  |
Revenue from External Customer [Line Items] |  |
Total product sales | 4,147 | 4,095
ROW [Member] |  |
Revenue from External Customer [Line Items] |  |
Total product sales | 1,196 | 1,104
Neulasta® [Member] |  |
Revenue from External Customer [Line Items] |  |
Total product sales | 1,155 | 1,210
Neulasta® [Member] | US [Member] |  |
Revenue from External Customer [Line Items] |  |
Total product sales | 1,009 | 1,048
Neulasta® [Member] | ROW [Member] |  |
Revenue from External Customer [Line Items] |  |
Total product sales | 146 | 162
Enbrel [Member] |  |
Revenue from External Customer [Line Items] |  |
Total product sales | 1,105 | 1,181
Enbrel [Member] | US [Member] |  |
Revenue from External Customer [Line Items] |  |
Total product sales | 1,050 | 1,118
Enbrel [Member] | ROW [Member] |  |
Revenue from External Customer [Line Items] |  |
Total product sales | 55 | 63
Sensipar® / Mimpara® [Member] |  |
Revenue from External Customer [Line Items] |  |
Total product sales | 497 | 421
Sensipar® / Mimpara® [Member] | US [Member] |  |
Revenue from External Customer [Line Items] |  |
Total product sales | 409 | 337
Sensipar® / Mimpara® [Member] | ROW [Member] |  |
Revenue from External Customer [Line Items] |  |
Total product sales | 88 | 84
Prolia® [Member] |  |
Revenue from External Customer [Line Items] |  |
Total product sales | 494 | 425
Prolia® [Member] | US [Member] |  |
Revenue from External Customer [Line Items] |  |
Total product sales | 320 | 279
Prolia® [Member] | ROW [Member] |  |
Revenue from External Customer [Line Items] |  |
Total product sales | 174 | 146
Aranesp® [Member] |  |
Revenue from External Customer [Line Items] |  |
Total product sales | 454 | 511
Aranesp® [Member] | US [Member] |  |
Revenue from External Customer [Line Items] |  |
Total product sales | 225 | 278
Aranesp® [Member] | ROW [Member] |  |
Revenue from External Customer [Line Items] |  |
Total product sales | 229 | 233
XGEVA® [Member] |  |
Revenue from External Customer [Line Items] |  |
Total product sales | 445 | 402
XGEVA® [Member] | US [Member] |  |
Revenue from External Customer [Line Items] |  |
Total product sales | 332 | 298
XGEVA® [Member] | ROW [Member] |  |
Revenue from External Customer [Line Items] |  |
Total product sales | 113 | 104
EPOGEN® [Member] |  |
Revenue from External Customer [Line Items] |  |
Total product sales | 244 | 270
EPOGEN® [Member] | US [Member] |  |
Revenue from External Customer [Line Items] |  |
Total product sales | 244 | 270
EPOGEN® [Member] | ROW [Member] |  |
Revenue from External Customer [Line Items] |  |
Total product sales | 0 | 0
Other products [Member] |  |
Revenue from External Customer [Line Items] |  |
Total product sales | 949 | 779
Other products [Member] | US [Member] |  |
Revenue from External Customer [Line Items] |  |
Total product sales | 558 | 467
Other products [Member] | ROW [Member] |  |
Revenue from External Customer [Line Items] |  |
Total product sales | $ 391 | $ 312

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- Definition Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues. + References No definition available. + Details
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