Document and Entity Information - shares shares in Thousands	9 Months Ended
	Sep. 30, 2019	Nov. 01, 2019
Document and Entity Information [Abstract]
Entity Registrant Name	FRONTIER COMMUNICATIONS CORPORATION
Document Quarterly Report	true
Document Transition Report	false
Entity Incorporation, State or Country Code	DE
Entity Central Index Key	0000020520
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q3
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2019
Entity Tax Identification Number	06-0619596
Entity File Number	001-11001
Entity Address, Address Line One	401 Merritt 7
Entity Address, City or Town	Norwalk
Entity Address, State or Province	CT
Entity Address, Postal Zip Code	06851
City Area Code	203
Local Phone Number	614-5600
Title of 12(b) Security	Common Stock, par value $0.25 per share
Security Exchange Name	NASDAQ
Trading Symbol	FTR
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		105,370