General - Additional Information (Details) $ / shares in Units, € in Millions	3 Months Ended		12 Months Ended
	Aug. 31, 2020 USD ($) $ / shares shares	Aug. 31, 2019 USD ($) shares	May 31, 2020 USD ($)	Aug. 31, 2020 EUR (€) shares	Jan. 26, 2016 shares
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Gross contract assets related to in-transit shipments	$ 620,000,000		$ 563,000,000
Contract assets net of deferred unearned revenue	450,000,000		456,000,000
Contract liabilities related to advance payments from customers	9,000,000		10,000,000
Stock-based compensation	$ 75,000,000	$ 67,000,000	$ 67,000,000
Denominated debt as a net investment hedge | €				€ 640
Stock repurchase program number of shares authorized to be repurchased | shares					25,000,000
Number of shares repurchased | shares	0.0	20,000.00
Stock repurchase program, remaining number of shares authorized to be repurchased | shares	5,100,000			5,100,000
Dividends payable, date declared	Aug. 14, 2020
Dividends payable amount per share | $ / shares	$ 0.65
Dividends payable, date to be paid	Oct. 01, 2020
Dividends payable, date of record	Sep. 04, 2020
Amended and Restated Five-Year Credit Agreement [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Line of credit facility maximum borrowing capacity	$ 2,000,000,000.0
Amended and Restated 364-Day Credit Agreement [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Line of credit facility maximum borrowing capacity	$ 1,500,000,000
Line of credit facility, term	364 days
ASU 2016-13
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Change in accounting principle, ASU adopted	true			true
Change in accounting principle, ASU adoption date	Jun. 01, 2020			Jun. 01, 2020
Change in accounting principle, ASU immaterial effect	true			true
ASU 2018-15
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Change in accounting principle, ASU adopted	true			true
Change in accounting principle, ASU adoption date	Jun. 01, 2020			Jun. 01, 2020
Change in accounting principle, ASU immaterial effect	true			true
ASU 2019-12
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Change in accounting principle, ASU adopted	true			true
Change in accounting principle, ASU adoption date	Jun. 01, 2020			Jun. 01, 2020
Change in accounting principle, ASU immaterial effect	true			true