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Valuation and Qualifying Accounts | 12 Months Ended
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Dec. 31, 2020
Valuation And Qualifying Accounts [Abstract] |
Valuation and Qualifying Accounts | STMICROELECTRONICS N.V. VALUATION AND QUALIFYING ACCOUNTS
Valuation and qualifying accounts deducted from the related asset accounts |  | Balance at beginning of period |  |  | Translation adjustment |  |  | Charged to costs and expenses |  |  | Additions/ (Deductions) |  |  | Balance at end of period |
|  | (Currency—millions of U.S. dollars) |
2020 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accounts Receivable |  |  | 16 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 16 |
Deferred Tax Assets |  |  | 1,534 |  |  |  | 28 |  |  |  | (11 | ) |  |  | (913 | ) |  |  | 638 |
2019 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accounts Receivable |  |  | 15 |  |  |  | — |  |  |  | — |  |  |  | 1 |  |  |  | 16 |
Deferred Tax Assets |  |  | 1,548 |  |  |  | (4 | ) |  |  | — |  |  |  | (10 | ) |  |  | 1,534 |
2018 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accounts Receivable |  |  | 15 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 15 |
Deferred Tax Assets |  |  | 1,502 |  |  |  | (16 | ) |  |  | 143 |  |  |  | (81 | ) |  |  | 1,548 |

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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=120395691&loc=d3e24092-122690 + Details
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- References No definition available. + Details
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Period Type: | duration