Quarterly Financial Data (Tables)

12 Months Ended

Dec. 31, 2015

Quarterly Financial Data [Abstract]

Quarterly Financial Information

($ in millions, except per share amounts)
2015	First Quarter		Second Quarter		Third Quarter		Fourth Quarter		Total Year
Revenue	$	1,371	$	1,368	$	1,424	$	1,413	$	5,576
Operating income		163		193		207		182		745
Net (loss) attributable to Frontier
common shareholders		(51)		(28)		(81)		(156)		(316)
Basic net (loss) per share attributable
to Frontier common shareholders	$	(0.05)	$	(0.03)	$	(0.07)	$	(0.14)	$	(0.29)

2014	First Quarter		Second Quarter		Third Quarter		Fourth Quarter		Total Year
Revenue	$	1,154	$	1,147	$	1,141	$	1,330	$	4,772
Operating income		226		224		197		173		820
Net income attributable to Frontier
common shareholders		39		38		42		14		133
Basic net income per share attributable
to Frontier common shareholders	$	0.04	$	0.04	$	0.04	$	0.01	$	0.13