Quarterly report pursuant to Section 13 or 15(d)

Income Taxes (Narrative) (Details)

v3.20.1
Income Taxes (Narrative) (Details)
3 Months Ended 9 Months Ended
Feb. 29, 2020
Feb. 28, 2019
Feb. 29, 2020
Feb. 28, 2019
Income Taxes [Abstract]        
Effective income tax rate 23.60% 23.70% 23.40% 24.00%