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Repurchases of Lumen Common Stock (Details) - USD ($) $ / shares in Units, $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2022 | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Equity, Class of Treasury Stock [Line Items] |  |  |  |
Repurchase program, period (in years) | 2 years |  |  |
Repurchase program, authorized amount | $ 1,500 |  |  | $ 1,500
Number of shares repurchased (in shares) |  | 0 | 0 | 33,000,000
Repurchases of common stock |  |  |  | $ 200
Average purchase price (in dollars per share) |  |  |  | $ 6.07
Common Stock |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |
Repurchases of common stock |  | $ 0 | $ 0 | $ 33
Repurchased common stock that were retired |  |  |  | 33
Additional Paid-in Capital |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |
Repurchases of common stock |  | $ 0 | $ 0 | 167
Repurchased common stock that were retired |  |  |  | $ 167

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- Definition Period share may be purchased under authorized share repurchase plan, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, repurchase of stock and unit of ownership. + References No definition available. + Details
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