Quarterly Financial Data (Unaudited) (Tables)

12 Months Ended

Dec. 31, 2014

Quarterly Financial Data (Unaudited) [Abstract]

Quarterly Financial Information

($ in thousands, except per share amounts)
2014	First Quarter		Second Quarter		Third Quarter		Fourth Quarter		Total Year
Revenue	$	1,154,046	$	1,147,265	$	1,140,874	$	1,330,305	$	4,772,490
Operating income		226,025		224,342		197,031		172,543		819,941
Net income attributable to common
shareholders of Frontier		39,274		37,680		41,993		13,946		132,893
Basic net income per common share
attributable to common shareholders
of Frontier	$	0.04	$	0.04	$	0.04	$	0.01	$	0.13

2013	First Quarter		Second Quarter		Third Quarter		Fourth Quarter		Total Year
Revenue	$	1,205,396	$	1,190,533	$	1,185,278	$	1,180,369	$	4,761,576
Operating income		250,824		266,156		206,172		257,569		980,721
Net income (loss) attributable to common
shareholders of Frontier		48,140		(38,460)		35,400		67,755		112,835
Basic net income (loss) per common share
attributable to common shareholders
of Frontier	$	0.05	$	(0.04)	$	0.04	$	0.07	$	0.11