Available-For-Sale Securities (Tables)

3 Months Ended

Mar. 31, 2014

Investments, Debt and Equity Securities [Abstract]

Schedule of available-for-sale securities

	March 31, 2014						December 31, 2013
(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	117		1		118		119		1			120
Corporate bonds
Corporate bonds	629		22		651		612		21			633
Asset-backed securities	76		1		77		72		—			72
Mortgage-backed debt securities
U.S. governmental agency	326		—		326		322		(1		)	321
Residential	17		1		18		18		—			18
Commercial	70		6		76		87		6			93
Equity securities
Large capitalization value	164		74		238		173		81			254
Smaller company growth	24		24		48		25		24			49
Total	$	1,433	$	129	$	1,562	$	1,438	$	132		$	1,570

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:
	March 31, 2014
	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	$	159	$	1	$	1	$	—	$	160	$	1
Asset-backed securities	5		—		17		1		22		1
Mortgage-backed debt securities
U.S. governmental agency	98		2		105		4		203		6
Equity securities
Large capitalization value	20		1		1		—		21		1
Total	$	282	$	4	$	124	$	5	$	406	$	9

	December 31, 2013
	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	$	159	$	2	$	1	$	—	$	160	$	2
Asset-backed securities	6		—		20		1		26		1
Mortgage-backed debt securities
U.S. governmental agency	140		4		65		2		205		6
Total	$	305	$	6	$	86	$	3	$	391	$	9

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

Cost basis and fair value of the available-for-sale debt securities by contractual maturity

	March 31, 2014
(Millions of dollars)	Cost Basis		Fair Value
Due in one year or less	$	155	$	156
Due after one year through five years	614		635
Due after five years through ten years	33		35
Due after ten years	30		30
U.S. governmental agency mortgage-backed securities	326		326
Residential mortgage-backed securities	17		18
Commercial mortgage-backed securities	70		76
Total debt securities – available-for-sale	$	1,245	$	1,276

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

Sales of Securities:
	Three Months Ended March 31,
(Millions of dollars)	2014		2013
Proceeds from the sale of available-for-sale securities	$	115	$	98
Gross gains from the sale of available-for-sale securities	$	14	$	1
Gross losses from the sale of available-for-sale securities	$	—	$	—