Airtran Acquisition and Related Matters (Tables)

12 Months Ended

Dec. 31, 2013

Business Combinations [Abstract]

Pro Forma Results of Operations

	Year ended December 31,
(in millions, except per share data)	2011
Total operating revenues	$	16,601
Net income	160
Net income per share, basic	0.21
Net income per share, diluted	0.21