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Credit Losses on Financial Instruments (Tables) | 3 Months Ended
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Mar. 31, 2023
Credit Loss [Abstract] |
Financing Receivable, Allowance for Credit Loss | The following table presents the activity of our allowance for credit losses by accounts receivable portfolio for the three months ended March 31, 2023:
| Business |  | Mass Markets |  | Total
| (Dollars in millions)
As of December 31, 2022(1) | $ | 57 |  |  | 28 |  |  | 85 |
Provision for expected losses | 12 |  |  | 15 |  |  | 27 |
Write-offs charged against the allowance | (12) |  |  | (18) |  |  | (30) |
Recoveries collected | 2 |  |  | — |  |  | 2 |
Ending balance at March 31, 2023(1) | $ | 59 |  |  | 25 |  |  | 84 |
______________________________________________________________________ (1)As of March 31, 2023 and December 31, 2022, these amounts excluded a $5 million allowance for credit losses classified as held for sale related to the EMEA business included in the Business portfolio. See Note 2—Planned Divestiture of the EMEA Business.

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- Definition Tabular disclosure of allowance for credit loss on financing receivable. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -URI https://asc.fasb.org/extlink&oid=123577603&loc=SL6953423-111524 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -URI https://asc.fasb.org/extlink&oid=124255953&loc=SL82919249-210447 + Details
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