Consolidated Statements Of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Consolidated Statements Of Operations [Abstract]
Revenue	$ 4,761,576	$ 5,011,853	$ 5,243,043
Operating expenses:
Network access expenses	431,073	441,588	518,682
Other operating expenses	2,141,068	2,234,553	2,278,419
Depreciation and amortization	1,169,500	1,266,807	1,403,175
Pension settlement costs	44,163
Acquisition and integration costs	9,652	81,737	143,146
Total operating expenses	3,795,456	4,024,685	4,343,422
Gain on sale of Mohave partnership interest	14,601
Operating income	980,721	987,168	899,621
Investment income	3,808	13,011	2,391
Losses on early extinguishment of debt	159,780	90,363
Other income, net	5,369	7,121	9,135
Interest expense	667,398	687,985	665,196
Income before income taxes	162,720	228,952	245,951
Income tax expense	47,242	75,638	88,343
Net income	115,478	153,314	157,608
Less: Income attributable to the noncontrolling interest in a partnership	2,643	16,678	7,994
Net income attributable to common shareholders of Frontier	$ 112,835	$ 136,636	$ 149,614
Basic net income (loss) per common share attributable to common shareholders of Frontier	$ 0.11	$ 0.14	$ 0.15
Diluted net income per common share attributable to common shareholders of Frontier	$ 0.11	$ 0.13	$ 0.15