Available-For-Sale Securities (Tables)

9 Months Ended

Sep. 30, 2012

Investments, Debt and Equity Securities [Abstract]

Schedule of available-for-sale securities

	September 30, 2012							December 31, 2011
(Millions of dollars)	Cost Basis		Unrealized Pretax Net Gains (Losses)			Fair Value		Cost Basis		Unrealized Pretax Net Gains (Losses)			Fair Value
Government debt
U.S. treasury bonds	$	10	$	—		$	10	$	10	$	—		$	10
Other U.S. and non-U.S. government bonds	116		2			118		90		2			92
Corporate bonds
Corporate bonds	630		42			672		542		30			572
Asset-backed securities	94		—			94		112		(1		)	111
Mortgage-backed debt securities
U.S. governmental agency	288		10			298		297		13			310
Residential	28		(1		)	27		33		(3		)	30
Commercial	123		8			131		142		3			145
Equity securities
Large capitalization value	140		37			177		127		21			148
Smaller company growth	22		12			34		22		7			29
Total	$	1,451	$	110		$	1,561	$	1,375	$	72		$	1,447

Investments in an unrealized loss position that are not other-than-temporarily impaired:

Investments in an unrealized loss position that are not other-than-temporarily impaired:
	September 30, 2012
	Less than 12 months1				12 months or more1				Total
(Millions of dollars)	Fair Value		Unrealized Losses		Fair Value		Unrealized Losses		Fair Value		Unrealized Losses
Corporate bonds
Asset-backed securities	$	—	$	—	$	20	$	3	$	20	$	3
Mortgage-backed debt securities
U.S. governmental agency	74		1		4		—		78		1
Residential	—		—		15		1		15		1
Equity securities
Large capitalization value	22		2		13		2		35		4
Total	$	96	$	3	$	52	$	6	$	148	$	9

	December 31, 2011
	Less than 12 months1				12 months or more1				Total
(Millions of dollars)	Fair Value		Unrealized Losses		Fair Value		Unrealized Losses		Fair Value		Unrealized Losses
Corporate bonds
Corporate bonds	$	54	$	1	$	1	$	—	$	55	$	1
Asset-backed securities	1		—		20		5		21		5
Mortgage-backed debt securities
U.S. governmental agency	51		1		—		—		51		1
Residential	3		—		18		3		21		3
Commercial	15		—		8		1		23		1
Equity securities
Large capitalization value	36		5		6		1		42		6
Smaller company growth	4		1		—		—		4		1
Total	$	164	$	8	$	53	$	10	$	217	$	18

¹  Indicates length of time that individual securities have been in a continuous unrealized loss position.

Fair value of the available-for-sale debt securities, by contractual maturity

	September 30, 2012
(Millions of dollars)	Cost Basis		Fair Value
Due in one year or less	$	141	$	143
Due after one year through five years	530		551
Due after five years through ten years	135		157
Due after ten years	44		43
U.S. governmental agency mortgage-backed securities	288		298
Residential mortgage-backed securities	28		27
Commercial mortgage-backed securities	123		131
Total debt securities – available-for-sale	$	1,289	$	1,350

Schedule of proceeds and gross gain and losses from the sale of available-for-sale securities

Sales of Securities
	Three Months Ended September 30,				Nine Months Ended September 30,
(Millions of dollars)	2012		2011		2012		2011
Proceeds from the sale of available-for-sale securities	$	66	$	58	$	243	$	180
Gross gains from the sale of available-for-sale securities	$	1	$	1	$	4	$	3
Gross losses from the sale of available-for-sale securities	$	—	$	—	$	—	$	1