CONSOLIDATED STATEMENTS OF STOCKHOLDER'S EQUITY - USD ($) $ in Millions	Total	COMMON STOCK	RETAINED EARNINGS (ACCUMULATED DEFICIT)
Balance at beginning of period at Dec. 31, 2017		$ 10,050	$ (713)
Increase (Decrease) in Stockholder's Equity
Net income	$ 1,260		1,260
Dividends declared to Qwest Services Corporation	(925)		(925)
Balance at end of period at Sep. 30, 2018	9,819	10,050	(231)
Balance at beginning of period at Jun. 30, 2018		10,050	(353)
Increase (Decrease) in Stockholder's Equity
Net income	453		453
Dividends declared to Qwest Services Corporation			(350)
Balance at end of period at Sep. 30, 2018	9,819	10,050	(231)
Balance at beginning of period at Dec. 31, 2018	9,868	10,050	(182)
Increase (Decrease) in Stockholder's Equity
Net income	1,441		1,441
Dividends declared to Qwest Services Corporation	(1,100)		(1,100)
Balance at end of period at Sep. 30, 2019	10,209	10,050	159
Balance at beginning of period at Jun. 30, 2019		10,050	82
Increase (Decrease) in Stockholder's Equity
Net income	477		477
Dividends declared to Qwest Services Corporation			(400)
Balance at end of period at Sep. 30, 2019	$ 10,209	$ 10,050	$ 159