Document and Entity Information - USD ($) shares in Thousands, $ in Millions	12 Months Ended
	Dec. 31, 2023	Feb. 14, 2024	Jun. 30, 2023
Document and Entity Information [Abstract]
Document Type	10-K
Amendment Flag	false
Document Annual Report	true
Document Fiscal Period Focus	FY
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2023
Document Period End Date	Dec. 31, 2023
Document Transition Report	false
Entity File Number	001-11001
Entity Registrant Name	FRONTIER COMMUNICATIONS PARENT, INC.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	86-2359749
Entity Address, Address Line One	1919 McKinney Avenue
Entity Address, City or Town	Dallas
Entity Address, State or Province	TX
Entity Address, Postal Zip Code	75201
City Area Code	972
Local Phone Number	445-0042
Title of 12(b) Security	Common Stock, par value $0.01 per share
Trading Symbol	FYBR
Security Exchange Name	NASDAQ
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
ICFR Auditor Attestation Flag	true
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Public Float			$ 4,400
Entity Common Stock, Shares Outstanding		245,819
Documents Incorporated By Reference	DOCUMENT INCORPORATED BY REFERENCEPortions of the proxy statement for the Registrant’s 2024 Annual Meeting of Stockholders are incorporated by reference in Part III of this Annual Report on Form 10-K.
Document Financial Statement Error Correction [Flag]	false
Entity Central Index Key	0000020520
Auditor Name	KPMG LLP
Auditor Location	Stamford, Connecticut
Auditor Firm ID	185