XML 82 R70.htm IDEA: XBRL DOCUMENT v3.19.1
Supplemental information - Narrative (Details) - USD ($)
shares in Millions, $ in Millions
3 Months Ended
Feb. 28, 2019
Feb. 28, 2018
Aug. 31, 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Accounts receivable from related party   $ 1,500 $ 1,200
Restricted cash (included in other current assets) $ 191   190
Antidilutive securities excluded from EPS calculations (in shares) 14.4 10.6  
Trade Accounts Receivable      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Trade receivables   $ 6,300 $ 5,400