Quarterly Financial Data (Unaudited) (Tables)

12 Months Ended

Dec. 31, 2012

Quarterly Financial Data (Unaudited) [Abstract]

Quarterly Financial Information

($ in thousands, except per share amounts)
2012	First Quarter		Second Quarter		Third Quarter		Fourth Quarter		Total Year
Revenue	$	1,268,054	$	1,258,777	$	1,252,469	$	1,232,553	$	5,011,853
Operating income		208,458		267,784		275,196		235,730		987,168
Net income attributable to common shareholders of Frontier		26,768		17,989		67,000		24,879		136,636
Basic net income per common share attributable
to common shareholders of Frontier	$	0.03	$	0.02	$	0.07	$	0.02	$	0.14
2011
Revenue	$	1,346,697	$	1,322,255	$	1,290,939	$	1,283,152	$	5,243,043
Operating income		250,593		238,280		180,291		230,457		899,621
Net income attributable to common shareholders of Frontier		54,711		32,261		20,395		42,247		149,614
Basic net income per common share attributable
to common shareholders of Frontier	$	0.05	$	0.03	$	0.02	$	0.04	$	0.15