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Schedule II - Valuation and Qualifying Accounts | 12 Months Ended
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Dec. 31, 2019
SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract] |
Schedule II - Valuation and Qualifying Accounts |
Schedule II – Valuation and Qualifying Accounts | Occidental Petroleum Corporation and Subsidiaries
|  |  |  | Additions |  |  |  |  |
millions |  | Balance at Beginning of Period |  |  | Charged to Costs and Expenses |  |  | Charged to Other Accounts |  |  | Deductions (a) |  |  | Balance at End of Period |  |
2019 |  |  |  |  |  |  |  |  |  |  |
Allowance for doubtful accounts |  | $ | 668 |  |  | $ | 126 |  |  | $ | (6 | ) |  | $ | — |  |  | $ | 788 |  | (b)
Environmental, litigation and other reserves |  | $ | 994 |  |  | $ | 182 |  |  | $ | 1,408 |  |  | $ | (173 | ) |  | $ | 2,411 |  | (c)
2018 |  |  |  |  |  |  |  |  |  |  |
Allowance for doubtful accounts |  | $ | 594 |  |  | $ | 77 |  |  | $ | (3 | ) |  | $ | — |  |  | $ | 668 |  | (b)
Environmental, litigation, tax and other reserves |  | $ | 935 |  |  | $ | 140 |  |  | $ | 85 |  |  | $ | (166 | ) |  | $ | 994 |  | (c)
2017 |  |  |  |  |  |  |  |  |  |  |
Allowance for doubtful accounts |  | $ | 558 |  |  | $ | 37 |  |  | $ | (2 | ) |  | $ | 1 |  |  | $ | 594 |  | (b)
Environmental, litigation, tax and other reserves |  | $ | 997 |  |  | $ | 45 |  |  | $ | 53 |  |  | $ | (160 | ) |  | $ | 935 |  | (c)
Note: The amounts presented represent continuing operations.
(a) | Primarily represents payments.
(b) | Of these amounts, $22 million, $24 million and $18 million in 2019, 2018, and 2017, respectively, are classified as current.
(c) Of these amounts, $188 million, $146 million and $163 million in 2019, 2018, and 2017, respectively, are classified as current.

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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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