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SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS | 12 Months Ended
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Dec. 31, 2018
SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract] |
Schedule II - Valuation and Qualifying Accounts | SCHEDULE II AMGEN INC. VALUATION AND QUALIFYING ACCOUNTS Years ended December 31, 2019, 2018 and 2017 (In millions)
Allowance for doubtful accounts |  | Balance at beginning of period |  | Additions charged to costs and expenses |  | Other additions |  | Deductions |  | Balance at end of period
Year ended December 31, 2019 |  | $ | 48 |  |  | $ | — |  |  | $ | — |  |  | $ | 22 |  |  | $ | 26 |
Year ended December 31, 2018 |  | $ | 51 |  |  | $ | 1 |  |  | $ | — |  |  | $ | 4 |  |  | $ | 48 |
Year ended December 31, 2017 |  | $ | 51 |  |  | $ | 4 |  |  | $ | — |  |  | $ | 4 |  |  | $ | 51 |

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- Definition The entire disclosure for valuation and qualifying accounts and reserves. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 12 -Subsection 09 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690 + Details
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- References No definition available. + Details
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