Share Repurchases (Tables)

6 Months Ended

Jul. 31, 2017

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, 2017 and 2016:

	Six Months Ended July 31,
(Amounts in millions, except per share data)	2017		2016
Total number of shares repurchased	60.6		71.0
Average price paid per share	$	73.38	$	68.39
Total amount paid for share repurchases	$	4,447	$	4,852