CONSOLIDATED STATEMENTS OF STOCKHOLDER'S EQUITY - USD ($) $ in Millions	Total	COMMON STOCK	ACCUMULATED DEFICIT
Balance at beginning of period at Dec. 31, 2016		$ 10,050	$ (1,358)
Increase (Decrease) in Stockholder's Equity
Net income	$ 278		278
Dividends declared to Qwest Services Corporation	(250)		(250)
Dividend of equity interest in limited liability company to Qwest Services Corporation			(12)
Balance at end of period at Mar. 31, 2017	8,708	10,050	(1,342)
Increase (Decrease) in Stockholder's Equity
Cumulative effect of adoption of ASU 2014-09, Revenue from Contracts with Customers | Accounting Standards Update 2014-09			0
Balance at beginning of period at Dec. 31, 2017	9,337	10,050	(713)
Increase (Decrease) in Stockholder's Equity
Net income	380		380
Dividends declared to Qwest Services Corporation	(300)		(300)
Dividend of equity interest in limited liability company to Qwest Services Corporation			0
Balance at end of period at Mar. 31, 2018	$ 9,545	$ 10,050	(505)
Increase (Decrease) in Stockholder's Equity
Cumulative effect of adoption of ASU 2014-09, Revenue from Contracts with Customers | Accounting Standards Update 2014-09			$ 128