XML 102 R78.htm IDEA: XBRL DOCUMENT v3.19.3
DEFINED BENEFIT PENSION PLANS - Weighted-Average Assumptions Used to Determine Net Periodic Pension Cost (Detail)
12 Months Ended
Jul. 31, 2019
Jul. 31, 2018
Retirement Benefits [Abstract]    
Discount rate 1.46% 2.21%
Expected long-term rate of return on plan assets 1.45% 2.20%
Rate of compensation increase 1.92% 1.94%