FAIR VALUE MEASUREMENTS (Tables)

12 Months Ended

Oct. 31, 2018

Fair Value Disclosures [Abstract]

Fair Value Assets And Liabilities Measured On Recurring Basis

Financial assets and liabilities measured at fair value on a recurring basis as of October 31, 2018 were as follows:

			Fair Value Measurement at October 31, 2018 Using
	October 31, 2018		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
	(in millions)
Assets:
Short-term
Cash equivalents (money market funds)	$	1,355	$	1,355	$	—	$	—
Derivative instruments (foreign exchange contracts)	16		—		16		—
Long-term
Trading securities	30		30		—		—
Total assets measured at fair value	$	1,401	$	1,385	$	16	$	—
Liabilities:
Short-term
Derivative instruments (foreign exchange contracts)	$	5	$	—	$	5	$	—
Long-term
Deferred compensation liability	30		—		30		—
Total liabilities measured at fair value	$	35	$	—	$	35	$	—

Financial assets and liabilities measured at fair value on a recurring basis as of October 31, 2017 were as follows:

			Fair Value Measurement at October 31, 2017 Using
	October 31, 2017		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
	(in millions)
Assets:
Short-term
Cash equivalents (money market funds)	$	1,659	$	1,659	$	—	$	—
Derivative instruments (foreign exchange contracts)	4		—		4		—
Long-term
Trading securities	32		32		—		—
Total assets measured at fair value	$	1,695	$	1,691	$	4	$	—
Liabilities:
Short-term
Derivative instruments (foreign exchange contracts)	$	6	$	—	$	6	$	—
Long-term
Deferred compensation liability	32		—		32		—
Total liabilities measured at fair value	$	38	$	—	$	38	$	—

Impairment of Long-lived assets included in net income

For assets measured at fair value on a non-recurring basis, the following table summarizes the impairments included in net income for the years ended October 31, 2018, 2017 and 2016:

	Years Ended October 31,
	2018		2017		2016
	(in millions)
Long-lived assets held and used	$	21	$	—	$	4
Long-lived assets held for sale	$	—	$	—	$	—