Consolidated Statements Of Operations - USD ($) shares in Thousands, $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Consolidated Statements Of Operations [Abstract]
Revenue	$ 2,356	$ 1,355
Operating expenses:
Network access expenses	411	160
Network related expenses	494	326
Selling, general and administrative expenses	544	357
Depreciation and amortization	579	316
Acquisition and integration costs	2	138
Pension settlement costs	43
Severance costs	12
Total operating expenses	2,085	1,297
Operating income	271	58
Investment and other income, net	3	11
Interest expense	388	373
Loss before income taxes	(114)	(304)
Income tax benefit	(39)	(118)
Net loss	(75)	(186)
Less: Dividends on preferred stock	54	54
Net loss attributable to Frontier common shareholders	$ (129)	$ (240)
Basic and diluted net loss per share attributable to Frontier common shareholders (in dollars per share)	$ (0.11)	$ (0.21)
Total weighted average shares outstanding - basic and diluted	1,163,739	1,164,041