Discontinued Operations (Tables)

3 Months Ended

Mar. 31, 2014

Discontinued Operations And Disposal Groups [Abstract]

Results of Operations Associated with Discontinued Operations

The results of operations associated with these discontinued operations for the three-month periods ended March 31, 2014 and 2013 were as follows:

	Three Months
	Ended March 31,
(Thousands of dollars)	2014			2013
Revenues	$	1,432,386			5,515,538
Income (loss) before income taxes, including a gain on disposal of $74,928 in 2013	$	(17,295	)		132,921
Income tax benefit		(3,262	)		(44,995	)
Income (loss) from discontinued operations	$	(14,033	)		177,916