Commitments (Details 4) - Aug. 31, 2015 $ in Millions |
USD ($) |
|---|---|
| Other Aircraft Commitments Disclosure [Abstract] | |
| Boeing 777F Conditional Aircraft Commitments | 9 |
| Boeing 767F Conditional Aircraft Commitments | 6 |
| Boeing 767F Aircraft Purchases | 50 |
| Other Commitment Disclosures [Line Items] | |
| Deposit and Progress Payments | $ 411 |
| Required Pensions Contributions Remaining | $ 495 |