Marketable Securities (Tables)

12 Months Ended

Dec. 31, 2012

Marketable Securities

Schedule of Marketable Securities

		December 31,		December 31,
(Millions)		2012		2011
U.S. government agency securities		$	162	$	119
Foreign government agency securities			16		8
Corporate debt securities			471		413
Commercial paper			116		30
Certificates of deposit/time deposits			41		49
U.S. treasury securities			54		―
U.S. municipal securities			13		9
Asset-backed securities:
	Automobile loan related		567		530
	Credit card related		123		244
	Equipment lease related		54		54
	Other		31		5
Asset-backed securities total			775		833
Current marketable securities		$	1,648	$	1,461
U.S. government agency securities		$	125	$	361
Foreign government agency securities			51		15
Corporate debt securities			494		255
U.S. treasury securities			18		34
U.S. municipal securities			14		5
Auction rate securities			7		4
Asset-backed securities:
	Automobile loan related		375		188
	Credit card related		34		24
	Equipment lease related		36		10
	Other		8		―
Asset-backed securities total			453		222
Non-current marketable securities		$	1,162	$	896
Total marketable securities		$	2,810	$	2,357

Marketable securities by contractual maturity

(Millions)	December 31, 2012
Due in one year or less	$	912
Due after one year through three years		1,483
Due after three years through five years		414
Due after five years		1
Total marketable securities	$	2,810