Share Repurchases (Tables)

3 Months Ended

Apr. 30, 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 three months endedApril 30, 2017 and 2016:

	Three Months Ended April 30,
(Amounts in millions, except per share data)	2017		2016
Total number of shares repurchased	31.1		40.7
Average price paid per share	$	70.25	$	67.23
Total amount paid for share repurchases	$	2,185	$	2,735