Repurchases of Lumen Common Stock	9 Months Ended
	Sep. 30, 2021
Equity [Abstract]
Repurchases of Lumen Common Stock	Repurchases of Lumen Common StockEffective August 3, 2021, our Board of Directors authorized a 24-month program to repurchase up to an aggregate of $1.0 billion of our outstanding common stock (the "August 2021 stock repurchase program"). During the three and nine months ended September 30, 2021, we repurchased 73.8 million shares of our outstanding common stock in the open market. These shares were repurchased for an aggregate market price of $909 million. The figures set forth above exclude 3.5 million shares that, as of September 30, 2021, we had agreed to purchase under the program for an additional $45 million in transactions that settled in October of 2021. All repurchased common stock has been retired.