Accumulated Other Comprehensive Income (Change in AOCI, Net of Tax) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	May 31, 2022	May 31, 2021	May 31, 2022	May 31, 2021
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning Balance	$ 2,338	$ 2,102	$ 2,137	$ 1,825
Other comprehensive (loss) income before reclassifications			10
Amounts reclassified from AOCI			(5)
Total other comprehensive income	2	19	5	49
Ending Balance	2,357	2,139	2,357	2,139
Foreign Currency Translation Adjustment
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning Balance			(20)
Other comprehensive (loss) income before reclassifications			(20)
Amounts reclassified from AOCI			0
Total other comprehensive income			(20)
Ending Balance	(40)		(40)
Derivative Instruments
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning Balance			(36)
Other comprehensive (loss) income before reclassifications			31
Amounts reclassified from AOCI			6
Total other comprehensive income			37
Ending Balance	1		1
Actuarial Gain (Loss)
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning Balance			51
Other comprehensive (loss) income before reclassifications			(1)
Amounts reclassified from AOCI			(14)
Total other comprehensive income			(15)
Ending Balance	36		36
Prior Service (Cost) Credit
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning Balance			(20)
Other comprehensive (loss) income before reclassifications			0
Amounts reclassified from AOCI			3
Total other comprehensive income			3
Ending Balance	(17)		(17)
AOCI Attributable to Parent
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning Balance	(22)	(4)	(25)	(34)
Total other comprehensive income	2	19	5	49
Ending Balance	$ (20)	$ 15	$ (20)	$ 15