Business Combination (Tables)

9 Months Ended

Sep. 30, 2011

Business Combination [Abstract]

Summary Of Purchase Price Allocation

		(In millions)
Consideration paid, net of cash acquired	$	2,894.4
Recognized amounts of net tangible and intangible assets acquired and liabilities assumed:
Restricted cash		15.5
Receivables		114.2
Inventories		87.0
Net property, plant and equipment, including mineral rights		4,510.6
Goodwill		425.0
Other assets		49.2
Accounts payable		(82.6	)
Other accrued expenses and current liabilities		(61.5	)
Debt		(604.8	)
Litigation accrual		(106.0	)
Accrued postretirement benefits		(47.7	)
Asset retirement obligation		(80.4	)
Coal supply agreements, net		(98.8	)
Deferred income taxes, net		(1,189.9	)
Other		(35.4	)
Net tangible and intangible assets acquired	$	2,894.4

Adjustments to Purchase Price and Provisional Fair Values

		(In millions)
Inventories		9.5
Net property, plant and equipment, including mineral rights		(5.8	)
Coal supply agreements, net		(21.2	)
Other		1.5
Purchase price adjustment – cash received	$	(16.0	)

Summary Of Unaudited Pro Forma

	Three Months Ended September 30				Nine Months Ended September 30
	2011		2010		2011		2010
				(In millions)
Total revenues
As reported	$	1,198.7	$	874.7	$	3,057.1	$	2,350.9
Pro forma	$	1,198.7	$	1,176.9	$	3,596.8	$	3,212.6
Income (loss) before income taxes
As reported	$	13.7	$	54.8	$	88.1	$	124.3
Pro forma	$	22.3	$	47.5	$	72.6	$	(66.9	)

Schedule of Business Acquisition, Integration, Restructuring and Other Related Costs

		Three Months Ended		Nine Months Ended
		September 30, 2011		September 30, 2011
		(In thousands)
Costs of completing the acquisition - Arch	$	1,717	$	29,569
Costs of completing the acquisition - ICG		—		23,503
Severance costs		2,977		16,475
Write off of acquired assets		—		7,316
Bridge financing fees		—		49,490
	$	4,694	$	126,353