Capitalized Exploratory Well Costs

3 Months Ended

Mar. 31, 2012

Capitalized Exploratory Well Costs (Tables) [Abstract]

Capitalized Exploratory Well Costs

Note 5 – Capitalized Exploratory Well Costs

Net changes in capitalized exploratory well costs are presented in the table below and exclude amounts that were capitalized and subsequently expensed in the period. All of these costs have been capitalized for less than one year after the completion of drilling.

	Capitalized Exploratory Well Costs
	2012		2011
	(in millions)
Balance at January 1,	$	5.0	$	13.6
Additions to capitalized exploratory well costs pending the determination of proved reserves		-		-
Reclassifications to property, plant and equipment after the determination of proved reserves		-		(5.5	)
Balance at March 31,	$	5.0	$	8.1