Marketable Securities (Tables)

3 Months Ended

Mar. 31, 2012

Marketable Securities

Schedule of Marketable Securities

	March 31,		December 31,
(Millions)	2012		2011
U.S. government agency securities	$	105	$	119
Foreign government agency securities	3		8
Corporate debt securities	360		413
Commercial paper	70		30
Certificates of deposit/time deposits	58		49
U.S. treasury securities	20		—
U.S. municipal securities	14		9
Asset-backed securities:
Automobile loan related	484		530
Credit card related	220		244
Equipment lease related	59		54
Other	6		5
Asset-backed securities total	769		833
Current marketable securities	$	1,399	$	1,461
U.S. government agency securities	$	257	$	361
Foreign government agency securities	—		15
Corporate debt securities	275		255
U.S. treasury securities	39		34
U.S. municipal securities	5		5
Auction rate securities	5		4
Asset-backed securities:
Automobile loan related	99		188
Credit card related	39		24
Equipment lease related	44		10
Asset-backed securities total	182		222
Non-current marketable securities	$	763	$	896
Total marketable securities	$	2,162	$	2,357

Marketable securities by contractual maturity

(Millions)	March 31, 2012
Due in one year or less	$	915
Due after one year through three years	1,085
Due after three years through five years	147
Due after five years	15
Total marketable securities	$	2,162