v3.20.2

Cover Page	Dec. 02, 2020
Entity Information [Line Items]
Document Type	8-K
Document Period End Date	Dec. 02, 2020
Entity Registrant Name	GCI LIBERTY, INC
Entity Central Index Key	0000808461
Amendment Flag	false
Entity Incorporation, State or Country Code	DE
Entity File Number	001-38385
Entity Tax Identification Number	92-0072737
Entity Address, Address Line One	12300 Liberty Blvd.
Entity Address, City or Town	Englewood
Entity Address, State or Province	CO
Entity Address, Postal Zip Code	80112
City Area Code	720
Local Phone Number	875-5900
Written Communications	false
Soliciting Material	false
Pre-commencement Tender Offer	false
Pre-commencement Issuer Tender Offer	false
Entity Emerging Growth Company	false
Series A Common Stock
Entity Information [Line Items]
Title of 12(b) Security	Series A Common Stock, par value $0.01 per share
Trading Symbol	GLIBA
Security Exchange Name	NASDAQ
Series A Cumulative Redeemable Preferred Stock
Entity Information [Line Items]
Title of 12(b) Security	Series A Cumulative Redeemable preferred stock, par value $0.01 per share
Trading Symbol	GLIBP
Security Exchange Name	NASDAQ

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The type of document being provided (such as 10-K, 10-Q, 485BPOS, etc). The document type is limited to the same value as the supporting SEC submission type, or the word 'Other'.

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A unique 10-digit SEC-issued value to identify entities that have filed disclosures with the SEC. It is commonly abbreviated as CIK.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Commission file number. The field allows up to 17 characters. The prefix may contain 1-3 digits, the sequence number may contain 1-8 digits, the optional suffix may contain 1-4 characters, and the fields are separated with a hyphen.

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The Tax Identification Number (TIN), also known as an Employer Identification Number (EIN), is a unique 9-digit value assigned by the IRS.

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Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as written communications pursuant to Rule 425 under the Securities Act.

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GCI LIBERTY, INC. 8-K