MARKETABLE SECURITIES (Tables)

12 Months Ended

Oct. 31, 2012

MARKETABLE SECURITIES

Amortized Cost and Fair Value of Marketable Securities

The amortized cost and fair value of marketable securities at October 31 in millions of dollars follow:

			Gross		Gross
	Amortized		Unrealized		Unrealized		Fair
	Cost		Gains		Losses		Value
2012
U.S. government debt securities	$	1,193	$	7			$	1,200
Municipal debt securities	35		3				38
Corporate debt securities	100		10				110
Mortgage-backed securities*	117		6		$	1	122
Marketable securities	$	1,445	$	26	$	1	$	1,470
2011
U.S. government debt securities	$	571	$	6	$	1	$	576
Municipal debt securities	34		2				36
Corporate debt securities	83		6				89
Mortgage-backed securities*	82		4				86
Marketable securities	$	770	$	18	$	1	$	787

* Primarily issued by U.S. government sponsored enterprises.

Schedule of Contractual Maturities of Debt Securities

The contractual maturities of debt securities at October 31, 2012 in millions of dollars follow:

	Amortized		Fair
	Cost		Value
Due in one year or less	$	813	$	813
Due after one through five years	366		370
Due after five through 10 years	85		93
Due after 10 years	64		72
Mortgage-backed securities	117		122
Debt securities	$	1,445	$	1,470