Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2013

Commitments and Contingencies.

Summary of estimated coal take-or-pay commitments

The following table summarizes our estimated coal take-or-pay commitments (dollars in millions):

			Years Ended December 31,
	2014		2015		2016		2017		2018		Thereafter
Coal take-or-pay commitments (a)	$	152	$	157	$	166	$	180	$	175	$	2,539

(a) Total take-or-pay commitments are approximately $3.4 billion.  The total net present value of these commitments is approximately $2.2 billion.

Summary of actual take-or-pay commitments

The following table summarizes the actual amounts purchased under the coal contracts which include take-or-pay provisions for each of the last three years (dollars in millions):

	Year Ended December 31,
	2013		2012		2011
Total purchases	$	188	$	196	$	191