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Repurchases of Lumen Common Stock (Details) - USD ($)
$ in Billions
3 Months Ended 9 Months Ended
Sep. 30, 2024
Dec. 31, 2022
Sep. 30, 2024
Equity [Abstract]      
Repurchase program, period   2 years  
Repurchase program, authorized amount $ 1.3 $ 1.5 $ 1.3
Number of shares repurchased 0   0