Share Repurchases (Tables)

6 Months Ended

Jul. 31, 2018

Class of Stock Disclosures [Abstract]

Schedule of Company's share repurchases

The following table provides, on a settlement date basis, the number of shares repurchased, average price paid per share and total amount paid for share repurchases for the six months endedJuly 31, 2018 and 2017:

	Six Months Ended July 31,
(Amounts in millions, except per share data)	2018		2017
Total number of shares repurchased	20.8		60.6
Average price paid per share	$	88.81	$	73.38
Total amount paid for share repurchases	$	1,844	$	4,447