XML 55 R45.htm IDEA: XBRL DOCUMENT v3.23.2
Net income per share - Narrative (Details) - Convertible Senior Notes - 2028 Notes
$ in Millions
Aug. 31, 2018
USD ($)
Debt Instrument [Line Items]  
Convertible senior notes, issued $ 880
Convertible senior notes, interest rate 2.00%