Related parties (Tables)

3 Months Ended

Nov. 30, 2017

Related Party Transactions [Abstract]

Schedule of Related Party Transactions

Related party transactions (in millions):

	Three months ended
	November 30, 2017		November 30, 2016
Purchases, net	$	11,604	$	10,636

	November 30, 2017		August 31, 2017
Trade accounts payable, net	$	4,818	$	4,384