COMMITMENTS AND CONTINGENCIES (Tables)

12 Months Ended

Dec. 31, 2011

COMMITMENTS AND CONTINGENCIES

Schedule of coal, natural gas and transportation contracts

	Firm physical gas and transportation contracts		Coal and coal transportation contracts
	(in millions)
January 1, 2012 through December 31, 2012	$	30.9	$	35.3
January 1, 2013 through December 31, 2014		43.5		46.7
January 1, 2015 through December 31, 2016		24.5		31.3
January 1, 2017 and beyond		17.8		—

Schedule of lease obligations over the next five years

Capital Leases	Capital Leases		Operating Leases
2012	$	618	$	939
2013		595		758
2014		553		720
2015		553		720
2016		549		720
Thereafter		4,646		1,813
Total minimum payments		7,514		5,670
Less amount representing interest		2,483		—
Present value of net minimum lease payments	$	5,031	$	5,670