CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Thousands, except Per Share data	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
CONSOLIDATED STATEMENTS OF OPERATIONS [Abstract]
Revenue	$ 1,322,255	$ 516,137	$ 2,668,952	$ 1,035,986
Operating expenses:
Network access expenses	126,629	53,139	277,913	106,682
Other operating expenses	578,096	189,649	1,158,436	382,674
Depreciation and amortization	358,986	99,974	710,243	201,023
Acquisition and integration costs	20,264	36,964	33,487	47,334
Total operating expenses	1,083,975	379,726	2,180,079	737,713
Operating income	238,280	136,411	488,873	298,273
Investment income	175	3,500	3,290	5,997
Other income (loss), net	(557)	6,334	5,913	11,290
Interest expense	166,864	93,968	334,279	187,755
Income before income taxes	71,034	52,277	163,797	127,805
Income tax expense	37,190	16,338	73,757	48,394
Net income	33,844	35,939	90,040	79,411
Less: Income attributable to the noncontrolling interest in a partnership	1,583	818	3,068	1,725
Net income attributable to common shareholders of Frontier	$ 32,261	$ 35,121	$ 86,972	$ 77,686
Basic and diluted net income per common share attributable to common shareholders of Frontier	$ 0.03	$ 0.11	$ 0.09	$ 0.25