Financial Instruments (Narrative) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended		3 Months Ended		3 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014 AA [Member]	Sep. 30, 2013 AA [Member]	Sep. 30, 2014 AA [Member]	Sep. 30, 2013 AA [Member]	Jun. 30, 2014 Fuel Hedging Contract [Member]	Dec. 31, 2013 Fuel Hedging Contract [Member]	Jun. 30, 2014 Fuel Hedging Contract [Member] AA [Member]	Dec. 31, 2013 Fuel Hedging Contract [Member] AA [Member]
Derivative [Line Items]
Proceeds from sale of derivative instrument									$ 71		$ 71
Amount of gain (loss) recognized in OCI on derivative									25		25
Amount of gain (loss) recognized in condensed consolidated statements of operations	7	25	7	2	7	25	7	2
Fuel derivatives, gross asset										$ 109		$ 109