Consolidated Statements Of Operations (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Consolidated Statements Of Operations [Abstract]
Revenue	$ 1,154,046,000	$ 1,205,396,000
Operating expenses:
Network access expenses	107,092,000	109,398,000
Other operating expenses	528,926,000	541,499,000
Depreciation and amortization	281,407,000	303,675,000
Acquisition and integration costs	10,596,000
Total operating expenses	928,021,000	954,572,000
Operating income	226,025,000	250,824,000
Investment and other income, net	1,395,000	4,654,000
Interest expense	170,957,000	171,420,000
Income before income taxes	56,463,000	84,058,000
Income tax expense	17,189,000	33,275,000
Net income	39,274,000	50,783,000
Less: Income attributable to the noncontrolling interest in a partnership		2,643,000
Net income attributable to common shareholders of Frontier	$ 39,274,000	$ 48,140,000
Basic and diluted net income per common share attributable to common shareholders of Frontier (in dollars per share)	$ 0.04	$ 0.05