CONSOLIDATED STATEMENTS OF STOCKHOLDER'S EQUITY - USD ($) $ in Millions	Total	COMMON STOCK	ACCUMULATED DEFICIT
Balance at beginning of period at Dec. 31, 2017		$ 10,050	$ (713)
Increase (Decrease) in Stockholder's Equity
Net income	$ 380		380
Dividends declared to Qwest Services Corporation	(300)		(300)
Balance at end of period at Mar. 31, 2018	9,545	10,050	(505)
Increase (Decrease) in Stockholder's Equity
Cumulative net effect of adoption of ASU 2014-09, Revenue from Contracts with Customers, net of ($43) taxes | Accounting Standards Update 2014-09			128
Balance at beginning of period at Dec. 31, 2018	9,868	10,050	(182)
Increase (Decrease) in Stockholder's Equity
Net income	487		487
Dividends declared to Qwest Services Corporation	(350)		(350)
Balance at end of period at Mar. 31, 2019	$ 10,005	$ 10,050	(45)
Increase (Decrease) in Stockholder's Equity
Cumulative net effect of adoption of ASU 2014-09, Revenue from Contracts with Customers, net of ($43) taxes | Accounting Standards Update 2014-09			$ 0