Fair Value Measurements (Tables)

6 Months Ended

Jun. 30, 2014

Fair Value Disclosures [Abstract]

Assets and Liabilities Measured at Fair Value on a Recurring Basis

The fair value hierarchy for assets and liabilities measured at fair value on a recurring basis at June 30, 2014, and December 31, 2013, is as follows:

Assets and Liabilities Measured at Fair Value on a Recurring Basis

(Millions of dollars)

	At June 30, 2014								At December 31, 2013
	Total		Level 1		Level 2		Level 3		Total		Level 1		Level 2		Level 3
Marketable Securities	$	268	$	268	$	—	$	—	$	263	$	263	$	—	$	—
Derivatives	13		—		13		—		28		—		28		—
Total Assets at Fair Value	$	281	$	268	$	13	$	—	$	291	$	263	$	28	$	—
Derivatives	83		63		20		—		89		80		9		—
Total Liabilities at Fair Value	$	83	$	63	$	20	$	—	$	89	$	80	$	9	$	—

Assets and Liabilities Measured at Fair Value on a Non-Recurring Basis

The fair value hierarchy for assets and liabilities measured at fair value on a nonrecurring basis at June 30, 2014, is as follows:

Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis

(Millions of dollars)

	At June 30, 2014
	Total		Level 1		Level 2		Level 3		Before-Tax Loss
									Three Months Ended		Six Months Ended
Properties, plant and equipment, net (held and used)	$	19	$	—	$	—	$	19	$	93	$	560
Properties, plant and equipment, net (held for sale)	—		—		—		—		—		—
Investments and advances	1		—		—		1		4		31
Total Assets at Fair Value	$	20	$	—	$	—	$	20	$	97	$	591