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Commitments (Details 1) (USD $)
In Millions, unless otherwise specified |
Nov. 30, 2011
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| Schedule of Purchase Commitments [Line Items] | ||||
| 2012 (remainder) | $ 824 | |||
| 2013 | 1,111 | |||
| 2014 | 837 | |||
| 2015 | 586 | |||
| 2016 | 620 | |||
| Thereafter | 3,355 | |||
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Aircraft And Related Equipment Commitments [Member]
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| Schedule of Purchase Commitments [Line Items] | ||||
| 2012 (remainder) | 389 | |||
| 2013 | 983 | |||
| 2014 | 780 | |||
| 2015 | 555 | |||
| 2016 | 580 | |||
| Thereafter | 3,225 | |||
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Other Commitments [Member]
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| Schedule of Purchase Commitments [Line Items] | ||||
| 2012 (remainder) | 435 | [1] | ||
| 2013 | 128 | [1] | ||
| 2014 | 57 | [1] | ||
| 2015 | 31 | [1] | ||
| 2016 | 40 | [1] | ||
| Thereafter | $ 130 | [1] | ||
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