XML 66 R54.htm IDEA: XBRL DOCUMENT
v3.19.1

Commitments and Contingencies (Detail) $ in Millions | Feb. 28, 2019 USD ($)
--- | ---
Commitments and Contingencies Disclosure [Abstract] |
Letters of credit outstanding | $ 172

X
- References No definition available. + Details
Name: | us-gaap_CommitmentsAndContingenciesDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The total amount of the contingent obligation under letters of credit outstanding as of the reporting date. + References No definition available. + Details
Name: | us-gaap_LettersOfCreditOutstandingAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant