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Derivative and Financial Instruments (Tables) | 12 Months Ended
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Dec. 31, 2022
Derivative Instruments and Hedging Activities Disclosure [Abstract] |
Balance Sheet Location - Fair Value Amounts of Derivatives, Balance Sheet Location | The following table presents the gross fair values of our commodity derivatives, excluding collateral, and the line items where they appear on our consolidated balance sheet:
| Millions of Dollars
| 2022 | 2021
Assets |  |
Prepaid expenses and other current assets | $ | 1,795 |  | 1,168 |
Other assets | 242 |  | 75 |
Liabilities |  |
Other accruals | 1,800 |  | 1,160 |
Other liabilities and deferred credits | 210 |  | 63 |
Gain (Loss) Amounts of Derivatives, Income Statement Location | The gains (losses) from commodity derivatives incurred, and the line items where they appear on our consolidated income statement were:
| Millions of Dollars
| 2022 | 2021 | 2020
Sales and other operating revenues | $ | (88) |  | (228) |  | 19 |
Other income (loss) | (5) |  | 25 |  | 4 |
Purchased commodities | (91) |  | 75 |  | 11 |
Net Exposures from Outstanding Derivative Contracts | The table below summarizes our net exposures resulting from outstanding commodity derivative contracts:
| Open Position Long/(Short)
| 2022 | 2021
Commodity |  |
Natural gas and power (billions of cubic feet equivalent) |  |
Fixed price | (14) |  | 4 |
Basis | (8) |  | (22) |
Net Carrying Amount of Investments and Long-term Receivables Carried at Cost plus Accrued Interest | The following investments are carried on our consolidated balance sheet at cost, plus accrued interest and the table reflects remaining maturities at December 31, 2022 and 2021:
| Millions of Dollars
| Carrying Amount
| Cash and Cash Equivalents | Short-Term Investments
| 2022 | 2021 | 2022 | 2021
Cash | $ | 593 |  | 670 |  |  |
Demand Deposits | 1,638 |  | 1,554 |  |  |
Time Deposits |  |  |  |
1 to 90 days | 4,116 |  | 2,363 |  | 1,288 |  | 217 |
91 to 180 days |  |  | 883 |  | 4 |
Within one year |  |  | 11 |  | 4 |
U.S. Government Obligations |  |  |  |
1 to 90 days | 14 |  | 431 |  | — |  | — |
| $ | 6,361 |  | 5,018 |  | 2,182 |  | 225 |
Debt Securities, Available-for-Sale | The following investments in debt securities classified as available for sale are carried at fair value on our consolidated balance sheet at December 31, 2022 and 2021:
| Millions of Dollars
| Carrying Amount
| Cash and Cash Equivalents | Short-Term Investments | Investments and Long-Term Receivables
| 2022 | 2021 | 2022 | 2021 | 2022 | 2021
Major Security Type |  |  |  |  |  |
Corporate Bonds | $ | — |  | 3 |  | 323 |  | 128 |  | 309 |  | 173 |
Commercial Paper | 97 |  | 7 |  | 156 |  | 82 |  |  |
U.S. Government Obligations | — |  | — |  | 115 |  | — |  | 63 |  | 2 |
U.S. Government Agency Obligations |  |  | 8 |  | 2 |  | 5 |  | 8 |
Foreign Government Obligations |  |  | — |  | 7 |  | 7 |  | 2 |
Asset-backed Securities |  |  | 1 |  | 2 |  | 138 |  | 63 |
| $ | 97 |  | 10 |  | 603 |  | 221 |  | 522 |  | 248 |
The following table summarizes the amortized cost basis and fair value of investments in debt securities classified as available for sale at December 31:
| Millions of Dollars
| Amortized Cost Basis | Fair Value
| 2022 | 2021 | 2022 | 2021
Major Security Type |  |  |  |
Corporate Bonds | $ | 641 |  | 305 |  | 632 |  | 304 |
Commercial Paper | 253 |  | 88 |  | 253 |  | 89 |
U.S. Government Obligations | 181 |  | 2 |  | 178 |  | 2 |
U.S. Government Agency Obligations | 13 |  | 10 |  | 13 |  | 10 |
Foreign Government Obligations | 7 |  | 9 |  | 7 |  | 9 |
Asset-backed Securities | 139 |  | 65 |  | 139 |  | 65 |
| $ | 1,234 |  | 479 |  | 1,222 |  | 479 |

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- Definition Tabular disclosure of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -URI https://asc.fasb.org/topic&trid=2196928 + Details
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