Available-for-sale securities (Tables)

12 Months Ended

Dec. 31, 2012



	December 31, 2012							December 31, 2011							December 31, 2010
(Millions of dollars)	Cost Basis		Unrealized Pretax Net Gains (Losses)			Fair Value		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	$	12	$	—		$	12
Other U.S. and non-U.S. government bonds	144		2			146		90		2			92		76		1			77

Corporate bonds
Corporate bonds	626		38			664		542		30			572		481		30			511
Asset-backed securities	96		—			96		112		(1		)	111		136		—			136

Mortgage-backed debt securities
U.S. governmental agency	291		8			299		297		13			310		258		15			273
Residential	26		(1		)	25		33		(3		)	30		43		(3		)	40
Commercial	117		10			127		142		3			145		164		4			168

Equity securities
Large capitalization value	147		38			185		127		21			148		100		22			122
Smaller company growth	22		12			34		22		7			29		23		8			31
Total	$	1,479	$	107		$	1,586	$	1,375	$	72		$	1,447	$	1,293	$	77		$	1,370



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

	December 31, 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	84		1		15		—		99		1
Residential	—		—		14		1		14		1

Equity securities
Large capitalization value	25		2		10		1		35		3
Total	$	109	$	3	$	59	$	5	$	168	$	8


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



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

	December 31, 2011
	Less than 12 months¹				12 months or more ¹				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.



Investments in an unrealized loss position that are not other-than-temporarily impaired:
	December 31, 2010
	Less than 12 months ¹				12 months or more ¹				Total
(Millions of dollars)	Fair Value		Unrealized Losses		Fair Value		Unrealized Losses		Fair Value		Unrealized Losses
Corporate bonds
Asset-backed securities	$	19	$	—	$	19	$	4	$	38	$	4

Mortgage-backed debt securities
Residential	2		—		25		4		27		4
Commercial	3		—		14		1		17		1

Equity securities
Large capitalization value	14		1		12		2		26		3
Total	$	38	$	1	$	70	$	11	$	108	$	12


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




	December 31, 2012
(Millions of dollars)	Cost Basis		Fair Value
Due in one year or less	$	161	$	162
Due after one year through five years	595		623
Due after five years through ten years	78		90
Due after ten years	42		41
U.S. governmental agency mortgage-backed securities	291		299
Residential mortgage-backed securities	26		25
Commercial mortgage-backed securities	117		127
Total debt securities – available-for-sale	$	1,310	$	1,367




Sales of Securities:
	Years Ended December 31,
(Millions of dollars)	2012		2011		2010
Proceeds from the sale of available-for-sale securities	$	306	$	247	$	228
Gross gains from the sale of available-for-sale securities	$	6	$	4	$	10
Gross losses from the sale of available-for-sale securities	$	—	$	1	$	1