Derivative Financial Instruments (Tables)

12 Months Ended

Jan. 31, 2018

Summary of Derivative Instruments [Abstract]

Balance Sheet Classification Of Financial Instruments

The Company's derivative instruments, as well as its nonderivative debt instruments designated and qualifying as net investment hedges, were classified as follows as of January 31, 2018 and 2017 in the Company's Consolidated Balance Sheets:

	January 31, 2018						January 31, 2017
(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 assets and deferred charges	$	—	$	208	$	300	$	8	$	471	$	—
Derivative liabilities:
Deferred income taxes and other	91		—		95		12		—		618
Nonderivative hedging instruments
Long-term debt	—		4,041		—		—		3,209		—