Earnings Per Share and Stock Issuances - Additional Information (Details) $ in Millions	May 31, 2020 USD ($)
Class of Stock [Line Items]
Stock repurchase program, remaining authorized repurchase amount	$ 611.1
March 2015 [Member]
Class of Stock [Line Items]
Stock repurchase program, remaining authorized repurchase amount	11.1
Stock repurchase program, authorized amount	600.0
November 2019 [Member]
Class of Stock [Line Items]
Stock repurchase program, authorized amount	$ 600.0