COMPREHENSIVE INCOME (LOSS) [Detail] (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Comprehensive income (loss) [Abstract]
Net income (loss)	$ 161	$ 112	$ 166	$ 123
Unrealized gain (loss) on fuel derivative instruments, net of deferred taxes	(178)	(98)	153	(39)
Unrealized gain (loss) on interest rate swaps, net of deferred taxes	(11)	(21)	(4)	(22)
Other, net of deferred taxes	3	(4)	6	(2)
Total Other comprehensive income	(186)	(123)	155	(63)
Total comprehensive income	(25)	(11)	321	60
Deferred taxes on unrealized gain (loss) on fuel derivative instruments	(111)	(61)	96	(24)
Deferred taxes on unrealized gain (loss) on interest rate derivative instruments	(7)	(13)	(3)	(14)
Deferred taxes on Other	2	(2)	4	(1)
Accumulated Other Comprehensive Income Loss Net of Tax [Line Items]
Beginning Balance	79		(262)
2011 changes in fair value	(204)		121
Reclassification to earnings	18		34
Ending Balance	(107)		(107)
Fuel hedge derivatives [Member]
Accumulated Other Comprehensive Income Loss Net of Tax [Line Items]
Beginning Balance	81		(250)
2011 changes in fair value	(196)		119
Reclassification to earnings	18		34
Ending Balance	(97)		(97)
Interest rate derivatives [Member]
Accumulated Other Comprehensive Income Loss Net of Tax [Line Items]
Beginning Balance	(27)		(34)
2011 changes in fair value	(11)		(4)
Reclassification to earnings	0		0
Ending Balance	(38)		(38)
Other [Member]
Accumulated Other Comprehensive Income Loss Net of Tax [Line Items]
Beginning Balance	25		22
2011 changes in fair value	3		6
Reclassification to earnings	0		0
Ending Balance	$ 28		$ 28