Commitments, Contingencies And Guarantees (Aircraft Acquisition Commitments) (Details)	Jun. 30, 2012
Property Subject to or Available for Operating Lease [Line Items]
2012, Purchase	18
2013, Purchase	23
2013, Lease	36
2014, Purchase	7
2014, Lease	50
2015, Purchase	2
2015, Lease	50
2016, Purchase	2
2016, Lease	45
2017 and beyond, Purchase	130
2017 and beyond, Lease	40
Total, Purchase	182
Total, Lease	221
Boeing 737 Family [Member]
Property Subject to or Available for Operating Lease [Line Items]
2012, Purchase	16
2013, Purchase	15
2013, Lease	16
2014, Purchase	5
2014, Lease	15
2015, Purchase
2015, Lease	20
2016, Purchase
2016, Lease	20
2017 and beyond, Purchase
2017 and beyond, Lease	20
Total, Purchase	36	[1]
Total, Lease	91
Number of aircraft purchase commitments with sale-leaseback financing	9
Boeing Seven Seven Seven Two Zero Zero Er Aircraft [Member]
Property Subject to or Available for Operating Lease [Line Items]
2012, Purchase
2013, Purchase
2013, Lease
2014, Purchase	2
2014, Lease
2015, Purchase	2
2015, Lease
2016, Purchase	2
2016, Lease
2017 and beyond, Purchase
2017 and beyond, Lease
Total, Purchase	6
Total, Lease	0
Boeing 777-300ER Aircraft [Member]
Property Subject to or Available for Operating Lease [Line Items]
2012, Purchase	2
2013, Purchase	8
2013, Lease
2014, Purchase
2014, Lease
2015, Purchase
2015, Lease
2016, Purchase
2016, Lease
2017 and beyond, Purchase
2017 and beyond, Lease
Total, Purchase	10
Total, Lease	0
Airbus A320 Family [Member]
Property Subject to or Available for Operating Lease [Line Items]
2012, Purchase
2013, Purchase
2013, Lease	20
2014, Purchase
2014, Lease	35
2015, Purchase
2015, Lease	30
2016, Purchase
2016, Lease	25
2017 and beyond, Purchase
2017 and beyond, Lease	20
Total, Purchase	0
Total, Lease	130
Airbus NEO [Member]
Property Subject to or Available for Operating Lease [Line Items]
2012, Purchase
2013, Purchase
2013, Lease
2014, Purchase
2014, Lease
2015, Purchase
2015, Lease
2016, Purchase
2016, Lease
2017 and beyond, Purchase	130
2017 and beyond, Lease
Total, Purchase	130
Total, Lease	0

[1] As of June 30, 2012, American had elected to purchase nine Boeing 737 Next Generation aircraft using the sale-leaseback financing arranged directly by American with a third party leasing company. These aircraft are therefore reflected as purchases in the above table.