XML 59 R47.htm IDEA: XBRL DOCUMENT v3.19.3.a.u2
CenturyLink Merger - Narrative (Details)
$ / shares in Units, $ in Millions
Dec. 31, 2019
USD ($)
Dec. 31, 2018
USD ($)
Oct. 31, 2018
USD ($)
Dec. 31, 2017
USD ($)
Nov. 01, 2017
USD ($)
$ / shares
Business Acquisition [Line Items]          
Goodwill $ 7,415 $ 11,119   $ 10,837  
Level 3 Parent, LLC | Restricted Stock Units (RSUs)          
Business Acquisition [Line Items]          
Stock conversion ratio         2.8386
Level 3 Parent, LLC | Level 3 Communications, Inc.          
Business Acquisition [Line Items]          
Cash consideration per share (in dollars per share) | $ / shares         $ 26.50
Level 3 Parent, LLC | CenturyLink          
Business Acquisition [Line Items]          
Stock conversion ratio         1.4286
Goodwill     $ 11,177 $ 10,837  
Transaction costs         $ 47
Level 3 Parent, LLC | CenturyLink | Restricted stock awards          
Business Acquisition [Line Items]          
Goodwill         1
Level 3 Parent, LLC | CenturyLink | Unsecured Debt          
Business Acquisition [Line Items]          
Long-term debt         $ 1,825
Debt instrument, stated interest rate         3.50%
Level 3 Communications, Inc. | Level 3 Parent, LLC          
Business Acquisition [Line Items]          
Ownership percentage by parent         51.00%
Level 3 Communications, Inc. | Level 3 Parent, LLC | Level 3 Shareholders          
Business Acquisition [Line Items]          
Ownership percentage by noncontrolling owners         49.00%