Consolidated Statements Of Operations - USD ($) shares in Thousands, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Consolidated Statements Of Operations [Abstract]
Revenue	$ 2,524	$ 1,424	$ 6,487	$ 4,163
Operating expenses:
Network access expenses	440	159	1,053	475
Network related expenses	527	331	1,399	969
Selling, general and administrative expenses	593	344	1,546	1,005
Depreciation and amortization	578	325	1,469	1,001
Acquisition and integration costs	122	58	387	150
Total operating expenses	2,260	1,217	5,854	3,600
Operating income	264	207	633	563
Investment and other income, net	(4)	1	7	3
Interest expense	386	246	1,145	751
Loss before income taxes	(126)	(38)	(505)	(185)
Income tax benefit	(46)	(24)	(212)	(92)
Net loss	(80)	(14)	(293)	(93)
Less: Dividends on preferred stock	54	67	161	67
Net loss attributable to Frontier common shareholders	$ (134)	$ (81)	$ (454)	$ (160)
Basic and diluted net loss per share attributable to Frontier common shareholders (in dollars per share)	$ (0.12)	$ (0.07)	$ (0.39)	$ (0.15)
Total weighted average shares outstanding - basic and diluted	1,164,172	1,161,207	1,164,112	1,061,644