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Schedule II - Valuation and Qualifying Accounts (Consolidated)	12 Months Ended
	Dec. 31, 2019
Schedule II - Valuation and Qualifying Accounts (Consolidated) [Abstract]
Schedule II - Valuation and Qualifying Accounts (Consolidated)	SCHEDULE II—VALUATION AND QUALIFYING ACCOUNTS (Consolidated) ConocoPhillips Millions of Dollars Balance at Charged to Balance at Description January 1 Expense Other (a) Deductions December 31 2019 Deducted from asset accounts: Allowance for doubtful accounts and notes receivable $ 25 5 - (17) (b) 13 Deferred tax asset valuation allowance 3,040 7,376 (26) (176) 10,214 Included in other liabilities: Restructuring accruals 48 (1) - (24) (c) 23 2018 Deducted from asset accounts: Allowance for doubtful accounts and notes receivable $ 4 23 - (2) (b) 25 Deferred tax asset valuation allowance 1,254 2,067 (8) (273) 3,040 Included in other liabilities: Restructuring accruals 53 70 (2) (73) (c) 48 2017 Deducted from asset accounts: Allowance for doubtful accounts and notes receivable $ 5 2 - (3) (b) 4 Deferred tax asset valuation allowance 675 560 19 - 1,254 Included in other liabilities: Restructuring accruals 80 65 1 (93) (c) 53 (a)Represents acquisitions/dispositions/revisions and the effect of translating foreign financial statements. (b)Amounts charged off less recoveries of amounts previously charged off. (c)Benefit payments. See Note 19 — Income Taxes, in the Notes to Consolidated Financial Statements, for additional information related to our deferred tax asset valuation allowance.