QUARTERLY FINANCIAL DATA (TABLES)

12 Months Ended

Dec. 31, 2011

Quarterly Financial Data [Abstract]

Schedule of Quarterly Financial Information [Table Text Block]

		THREE MONTHS ENDED
(in millions except per share amounts)		March 31		June 30		Sept. 30		Dec. 31
2011*
	Operating revenues	$	3,103	$	4,136	$	4,311	$	4,108
	Operating income		114		207		225		147
	Income (loss) before income taxes		18		275		(226)		255
	Net income (loss)		5		161		(140)		152
	Net income (loss) per share, basic		.01		.21		(.18)		.20
	Net income (loss) per share, diluted		.01		.21		(.18)		.20
		March 31		June 30		Sept. 30		Dec. 31
2010
	Operating revenues	$	2,630	$	3,168	$	3,192	$	3,114
	Operating income		54		363		355		216
	Income before income taxes		17		184		332		213
	Net income		11		112		205		131
	Net income per share, basic		.01		.15		.27		.18
	Net income per share, diluted		.01		.15		.27		.18
*	Includes the results of AirTran for May 2011 through December 2011. See Note 2 to the Consolidated Financial Statements for further information.