Consolidated Statements Of Operations - USD ($) shares in Thousands, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Consolidated Statements Of Operations [Abstract]
Revenue	$ 2,608	$ 1,368	$ 3,963	$ 2,739
Operating expenses:
Network access expenses	453	161	613	316
Network related expenses	546	313	872	638
Selling, general and administrative expenses	596	331	953	661
Depreciation and amortization	575	335	891	676
Acquisition and integration costs	127	35	265	92
Total operating expenses	2,297	1,175	3,594	2,383
Operating income	311	193	369	356
Investment and other income, net		1	11	2
Interest expense	386	260	759	505
Loss before income taxes	(75)	(66)	(379)	(147)
Income tax benefit	(48)	(38)	(166)	(68)
Net loss	(27)	(28)	(213)	(79)
Less: Dividends on preferred stock	53		107
Net loss attributable to Frontier common shareholders	$ (80)	$ (28)	$ (320)	$ (79)
Basic and diluted net loss per share attributable to Frontier common shareholders (in dollars per share)	$ (0.07)	$ (0.03)	$ (0.28)	$ (0.08)
Total weighted average shares outstanding - basic and diluted	1,164,262	1,037,407	1,164,083	1,018,976