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Credit Losses on Financial Instruments (Tables) | 9 Months Ended
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Sep. 30, 2022
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 nine months ended September 30, 2022:
| Business |  | Mass Markets |  | Total
| (Dollars in millions)
As of December 31, 2021(1) | $ | 88 |  |  | 26 |  |  | 114 |
Provision for expected losses | 19 |  |  | 80 |  |  | 99 |
Write-offs charged against the allowance | (47) |  |  | (88) |  |  | (135) |
Recoveries collected | 9 |  |  | 5 |  |  | 14 |
Foreign currency exchange rate change adjustment | 1 |  |  | — |  |  | 1 |
Change in allowance in assets held for sale | (1) |  |  | 3 |  |  | 2 |
Ending balance at September 30, 2022(2) | $ | 69 |  |  | 26 |  |  | 95 |
______________________________________________________________________ (1)As of December 31, 2021, these amounts excluded a $24 million allowance for credit losses classified as held for sale related to the August 1, 2022 divestiture of the Latin American business and the divestiture of the ILEC business. See Note 2—Recently Completed Divestitures of the Latin American and ILEC Businesses. (2)As of September 30, 2022, these amounts excluded a $19 million allowance for credit losses classified as held for sale related to the divestiture of the ILEC business. See Note 2—Recently Completed Divestitures of the Latin American and ILEC Businesses.

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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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