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Inventories | 12 Months Ended
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Dec. 31, 2019
Inventory Disclosure [Abstract] |
Inventories | INVENTORIES The following table summarizes our inventories (in millions):
|  | December 31,
|  | 2019 |  | 2018
Raw materials |  | $ | 1,348 |  |  | $ | 1,888 |
Work in process |  | 170 |  |  | 235 |
Finished goods |  | 549 |  |  | 507 |
Total |  | $ | 2,067 |  |  | $ | 2,630 |
Reported as: |  |  |  |
Inventories |  | $ | 922 |  |  | $ | 814 |
Other long-term assets |  | 1,145 |  |  | 1,816 |
Total |  | $ | 2,067 |  |  | $ | 2,630 |
Amounts reported as other long-term assets primarily consisted of raw materials as of December 31, 2019 and 2018. During the year ended December 31, 2019, we recorded inventory write-downs of $649 million, of which $547 million was related to slow moving and excess raw material and work in progress inventory primarily due to lower long-term demand for our hepatitis C virus (HCV) products. During the year ended December 31, 2018, we recorded inventory write-downs of $572 million, of which $440 million was related to excess raw materials primarily due to a sustained decrease in demand for Harvoni. Inventory write-downs recorded for the year ended December 31, 2017 were not material.

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- Definition The entire disclosure for inventory. Includes, but is not limited to, the basis of stating inventory, the method of determining inventory cost, the classes of inventory, and the nature of the cost elements included in inventory. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 330 -URI http://asc.fasb.org/topic&trid=2126998 + Details
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