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Receivables | 12 Months Ended
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Dec. 31, 2020
Receivables [Abstract] |
RECEIVABLES | 4. RECEIVABLES Receivables consisted of the following (in millions):
| December 31,
| 2020 |  | 2019
Receivables from contracts with customers | $ | 3,642 |  |  | $ | 5,610 |
Receivables from certain purchase and sale arrangements | 1,212 |  |  | 2,484 |
Receivables before allowance for credit losses | 4,854 |  |  | 8,094 |
Allowance for credit losses | (47) |  |  | (36) |
Receivables after allowance for credit losses | 4,807 |  |  | 8,058 |
Income taxes receivable | 1,024 |  |  | 84 |
Other receivables | 278 |  |  | 846 |
Receivables, net | $ | 6,109 |  |  | $ | 8,988 |
The increase to our income taxes receivable relates to the income tax benefit recorded during the year ended December 31, 2020 as described in Note 16. There were no significant changes in our allowance for credit losses during the years ended December 31, 2020, 2019, and 2018.

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- Definition The entire disclosure for claims held for amounts due a entity, excluding financing receivables. Examples include, but are not limited to, trade accounts receivables, notes receivables, loans receivables. Includes disclosure for allowance for credit losses. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -URI http://asc.fasb.org/subtopic&trid=2196772 + Details
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