Share Repurchases (Tables)

9 Months Ended

Oct. 31, 2016

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 nine months endedOctober 31, 2016 and 2015:

	Nine Months Ended October 31,
(Amounts in millions, except per share data)	2016		2015
Total number of shares repurchased	90.6		23.2
Average price paid per share	$	69.04	$	74.20
Total amount paid for share repurchases	$	6,254	$	1,720