Financing Arrangements (Details 2) $ in Millions |
6 Months Ended |
|---|---|
|
Nov. 30, 2016
USD ($)
| |
| Line Of Credit Facility [Line Items] | |
| Line Of Credit Facility Maximum Borrowing Capacity | $ 1,750 |
| Line of Credit Facility, Expiration Date | Nov. 13, 2020 |
| Financial Covenant Terms Ratio | 350.00% |
| Financial Covenant Compliance Ratio | 180.00% |
| Letters Of Credit Outstanding | $ 319 |
| Letter of Credit [Member] | |
| Line Of Credit Facility [Line Items] | |
| Line Of Credit Facility Maximum Borrowing Capacity | 500 |
| LineOfCreditFacilityRemainingBorrowingCapacity | $ 181 |