Earnings Per Share - Narrative (Details) - USD ($) $ / shares in Units, shares in Thousands	3 Months Ended				6 Months Ended		21 Months Ended
	Nov. 30, 2021	Aug. 31, 2021	Nov. 30, 2020	Aug. 31, 2020	Nov. 30, 2021	Nov. 30, 2020	Jul. 31, 2021	Jul. 27, 2021	Oct. 29, 2019
Earnings Per Share [Abstract]
Options granted and excluded from the computation of diluted earnings per share (in shares)	100		200		100	200
Equity, Class of Treasury Stock [Line Items]
Stock purchased under share buyback (shares)	0		0
Stock purchased under share buyback	$ 5,491,000	$ 659,235,000	$ 2,371,000	$ 69,011,000
Shares acquired for employee payroll taxes on restricted stock awards (in shares)	100		100		200	200
Shares acquired for employee payroll taxes on restricted stock awards, average price (in dollars per share)	$ 420.87		$ 333.60		$ 395.84	$ 301.01
Shares acquired for employee payroll taxes on restricted stock awards	$ 5,500,000		$ 2,400,000		$ 83,500,000	$ 71,400,000
October 29, 2019 Plan
Equity, Class of Treasury Stock [Line Items]
Share buyback program, authorized amount									$ 1,000,000,000
Stock purchased under share buyback (shares)					1,590	0	2,800
Stock purchased under share buyback, average price (in dollars per share)					$ 365.41	$ 0	$ 358.93
Stock purchased under share buyback					$ 581,220,000	$ 0	$ 1,000,000,000
July 27, 2021 Plan
Equity, Class of Treasury Stock [Line Items]
Share buyback program, authorized amount								$ 1,500,000,000
Stock purchased under share buyback (shares)					0	0
Stock purchased under share buyback, average price (in dollars per share)					$ 0	$ 0
Stock purchased under share buyback					$ 0	$ 0