Commitments (Details 3) - May. 31, 2015 $ in Millions	USD ($)
Other Commitment Disclosures [Abstract]
Deposit and Progress Payments	$ 472
Required U.S. pension plans contributions in 2016	500
Other Aircraft Disclosures [Line Items]
Boeing 777F Conditional Aircraft Commitments	9
Boeing 767F Conditional Aircraft Commitments	3