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Credit Losses on Financial Instruments (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |
Beginning balance | $ 67 | $ 85 | $ 114
Provision for expected losses | 72 | 100 | 133
Write-offs charged against the allowance | (90) | (127) | (175)
Recoveries collected | 10 | 9 | 16
Change in allowance in assets held for sale |  |  | (3)
Ending balance | 59 | 67 | 85
Disposal Group, Held-for-sale, Not Discontinued Operations | EMEA Business |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |
Allowance for credit losses |  |  | 5
Business |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |
Beginning balance | 36 | 57 | 88
Provision for expected losses | 26 | 35 | 25
Write-offs charged against the allowance | (32) | (62) | (61)
Recoveries collected | 6 | 6 | 10
Change in allowance in assets held for sale |  |  | (5)
Ending balance | 36 | 36 | 57
Mass Markets |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |
Beginning balance | 31 | 28 | 26
Provision for expected losses | 46 | 65 | 108
Write-offs charged against the allowance | (58) | (65) | (114)
Recoveries collected | 4 | 3 | 6
Change in allowance in assets held for sale |  |  | 2
Ending balance | $ 23 | $ 31 | $ 28

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