Derivative Financial Instruments (Tables)

6 Months Ended

Jul. 31, 2019

Summary of Derivative Instruments [Abstract]

Schedule of derivative instruments in statement of financial position, fair value

The Company's derivative instruments, as well as its nonderivative debt instruments designated and qualifying as net investment hedges, were classified as follows in the Company's Condensed Consolidated Balance Sheets:

	July 31, 2019						January 31, 2019
(Amounts in millions)	Fair Value Instruments		Net Investment Instruments		Cash Flow Instruments		Fair Value Instruments		Net Investment Instruments		Cash Flow Instruments
Derivative instruments
Derivative assets:
Other long-term assets	$	33	$	473	$	—	$	—	$	334	$	78
Derivative liabilities:
Deferred income taxes and other	3		—		617		78		—		350
Nonderivative hedging instruments
Long-term debt	—		3,707		—		—		3,863		—