COMMITMENTS AND CONTINGENCIES (Tables)

3 Months Ended

Mar. 31, 2013

COMMITMENTS AND CONTINGENCIES

Schedule of minimum future commitments related to the purchase obligations

				Payments Due By Period
(Millions)	Date Contracts Extend Through	Total Amounts Committed		2013		2014		2015		2016		2017		Later Years
Electric utility
Purchased power	2029	$	837.7	$	115.9	$	32.5	$	32.4	$	28.8	$	27.7	$	600.4
Coal supply and transportation	2017	122.7		44.4		41.2		30.4		6.2		0.5		—
Natural gas utility supply and transportation	2024	293.0		35.7		45.8		42.5		38.7		37.6		92.7
Total		$	1,253.4	$	196.0	$	119.5	$	105.3	$	73.7	$	65.8	$	693.1