Consolidated Statements of Member's/Stockholders' Equity - USD ($) $ in Millions	Total	Common Stock	Additional Paid-in Capital	AOCI Attributable to Parent	Accumulated Deficit	Member Units	AOCI Attributable to Parent
MEMBER'S EQUITY
Cumulative effect of new accounting principle in period of adoption | Predecessor | Accounting Standards Update 2014-09						$ 0
Cumulative effect of new accounting principle in period of adoption | Predecessor | Accounting Standards Update 2018-02						0	$ 0
Balance at beginning of period (Predecessor) at Dec. 31, 2016						0	(387)
MEMBER'S EQUITY
Net income | Predecessor	$ 249				$ 249	0
Other comprehensive (loss) income | Predecessor	62						62
Purchase price accounting adjustments | Predecessor						0
Distributions to CenturyLink | Predecessor						0
Balance at end of period (Predecessor) at Jun. 30, 2017						0	(325)
Balance at beginning of period (Predecessor) at Dec. 31, 2016		$ 4	$ 19,800		(8,500)
Balance at beginning of period at Dec. 31, 2016				$ (387)
STOCKHOLDERS' EQUITY
Common stock issued under employee stock benefit plans and other | Predecessor			19
Share-based compensation | Predecessor			68
Balance at end of period (Predecessor) at Jun. 30, 2017	11,315	4	19,887		(8,251)
Balance at end of period at Jun. 30, 2017				(325)
MEMBER'S EQUITY
Cumulative effect of new accounting principle in period of adoption | Accounting Standards Update 2014-09					9	9
Cumulative effect of new accounting principle in period of adoption | Accounting Standards Update 2018-02						(6)	6
Balance at beginning of period at Dec. 31, 2017						19,254	18
MEMBER'S EQUITY
Net income	102				0	102
Other comprehensive (loss) income	(163)						(163)
Purchase price accounting adjustments						(5)
Distributions to CenturyLink						(605)
Balance at end of period at Jun. 30, 2018						$ 18,749	$ (139)
Balance at beginning of period at Dec. 31, 2017	19,272	0	0	18	0
STOCKHOLDERS' EQUITY
Common stock issued under employee stock benefit plans and other			0
Share-based compensation			0
Balance at end of period at Jun. 30, 2018	$ 18,610	$ 0	$ 0	$ (139)	$ 0